Matrix Analogues of Some Properties for Bessel Matrix Functions
|
|
- Cornelius Jordan Stephens
- 5 years ago
- Views:
Transcription
1 J. Math. Sci. Univ. Tokyo (15, Matrix Analogues of Some Properties for Bessel Matrix Functions By Bayram Çek ım and Abdullah Altın Abstract. In this study, we obtain some recurrence relations for Bessel matrix functions of the first kind. Then we derive a new integral representation of these matrix functions. We lastly give new relations between Bessel matrix functions of the first kind and Laguerre matrix polynomials. 1. Introduction In recent years, the theory of special matrix functions has become an active research area in applied mathematics. In this theory, Gamma and Beta matrix functions [1], Hermite matrix polynomials [], Laguerre matrix polynomials [9], Jacobi matrix polynomials [4], Chebyshev matrix polynomials [3] and Bessel matrix polynomials [1] were studied. Furthermore, Bessel matrix functions were introduced by Jódar et al. in [6, 8, 7, 14]. It was considered that these function satisfy Bessel type differential equation t X (t+tx (t+ ( t I A X(t =, <t< where A is a matrix in C r r and unknown X(t isac r 1 -valued function. Jódar et al. gave different solutions of Bessel type differential equation according to a matrix A. After that study, Jódar et al. defined Bessel matrix functions of first kind and second kind. By using the kinds of Bessel matrix functions, the general solutions of this equation were obtained. Then, Çekim and Erkuş-Duman derived some integral representations of Bessel matrix functions in [1]. In current study, after having obtained the various properties by using these functions, we give relations between Bessel matrix functions of the first kind and Laguerre matrix polynomials. 1 Mathematics Subject Classification. Primary 33C45, 33C1; Secondary 15A6. Key words: Bessel matrix functions, Jordan block, Gamma matrix function, Beta matrix function, Laguerre matrix polynomials. 519
2 5 Bayram Çek ım and Abdullah Altın. Preliminaries and Some Facts For the sake of clarity, in the presentation of the next results, we recall some concepts and properties of the matrix functional calculus. Throughout this paper, we denote the set of all eigenvalues for a matrix A C r r by σ(a. Definition 1. A matrix A C r r is called a positive stable matrix if Re(λ > for all λ σ(a. Theorem 1 ([5]. If f(z and g(z are holomorphic functions in an open set Ω of the complex plane, and if A is a matrix in C r r for which σ(a Ω, then f(ag(a =g(af(a. Definition ([9]. For a positive stable matrix P in C r r, the Gamma matrix function Γ (P is defined by (.1 Γ(P = where t P I = exp [(P Ilnt]. e t t P I dt, Furthermore, the reciprocal scalar Gamma function, Γ 1 (z =1/Γ(z, is an entire function of the complex variable z. Thus, for any A C r r, the Riesz-Dunford functional calculus [5] shows that Γ 1 (A is well defined and, indeed, it is the inverse of Γ(A. Hence, if σ(a (A C r r doesnot contain or a negative integer, (. Γ 1 (A =A(A + I(A +I...(A + kiγ 1 (A +(k +1I. Definition 3 ([9]. For positive stable matrices P and Q in C r r, the Beta matrix function B (P, Q is defined by (.3 1 B (P, Q = t P I (1 t Q I dt.
3 Bessel Matrix Functions of the First Kind 51 Theorem ([9]. and PQ = QP. Then Let P,Q, P + Q be positive stable matrices in C r r (.4 B (P, Q =Γ(P Γ(QΓ 1 (P + Q. Theorem 3 ([11]. Let P and Q be matrices in C r r where Then, we have PQ = QP and P + ni, Q + ni, P + Q + ni are invertible for all n N. (.5 B (P, Q =Γ(P Γ(QΓ 1 (P + Q. Moreover, let us consider the Bessel functions of the first kind of order υ, defined by J υ (t = ( t υ m ( 1 m Γ 1 (υ + m +1 ( t m, <t< which is an entire function of the parameter υ [13]. Thus, if H is a Jordan block of the following form υ υ 1... H = (.6 C r r, υ we can write the image by means of the matrix functional calculus acting on the matrix H and the function of υ, J υ (t, the Bessel matrix functions of the first kind of order H is defined as follows: (.7 J H (t = ( t H m ( 1 m Γ 1 (H +(m +1I ( t m, <t<
4 5 Bayram Çek ım and Abdullah Altın where υ/ Z [8]. Let us take A C r r satisfying (.8 σ(a Z = φ. In [8], Jódar et al. defined Bessel matrix functions of the first kind of order A as the following: (.9 J A (t = ( t A m ( 1 m Γ 1 (A +(m +1I ( t m, <t<. Now, let us consider the general case. Let A be a matrix satisfying the condition (.8 and H = diag(h 1,..., H k be the Jordan canonical form of A, where H i is a Jordan block such that υ i υ i 1... H i = (.1 C p i p i, υ i p i 1, p 1 + p p k = r. Here if p i =1, we can write H i =(υ i where υ i / Z for 1 i k. Thus, the Bessel matrix functions of the first kind can be written in the form J H (t = diag 1 i k (J Hi (t. Furthermore, if P is an invertible matrix in C r r and H = diag(h 1,..., H k is the Jordan canonical form of A such that H = diag(h 1,..., H k =PAP 1, we have the Bessel matrix functions of the first kind of order A in (.9 (see [8]. 3. Some Properties for Bessel Matrix Functions of the First Kind In this section, we derive some recurrence relations for Bessel matrix functions of the first kind. Let H be a Jordan block defined as in (.6.
5 Bessel Matrix Functions of the First Kind 53 Thus, if H satisfies the condition (.8, and < z <, wehavethe following properties. Using (.7 and differentiating with respect to z, we have d dz [zh J H (z] ( = d dz z H ( z H ( 1 m ( z m Γ 1 (H +(m +1I = H I ( 1 m ( z Γ 1 (H +(m +1I(mI +H (m 1I+H ( (z H I = z H ( 1 m ( z m Γ 1 (H + mi = z H J H I (z. Thus, for the Bessel matrix functions of the first kind, we have the first property d (3.1 dz [zh J H (z] = z H J H I (z where / σ(h. Similarly, we obtain ( d dz [z H J H (z] = d ( z H z H ( 1 m ( z m Γ 1 (H +(m +1I dz ( 1 m = mγ 1 (H +(m +1I mi H z m 1 m=1 ( 1 m = Γ 1 (H +(m +I (m+1i H z m+1 ( = z H ( 1 m = z H J H+I (z. That is, we have the second property ( z (m+1i+h Γ 1 (H +(m +I (3. d dz [z H J H (z] = z H J H+I (z.
6 54Bayram Çek ım and Abdullah Altın Then from (3.1, we obtain (3.3 zj H(z =zj H I (z HJ H (z where / σ(h. From (3., we derive (3.4 zj H(z = zj H+I (z+hj H (z where / σ(h. Also, by (3.3 and (3.4, we get (3.5 J H(z =J H I (z J H+I (z and (3.6 HJ H (z =z[j H I (z+j H+I (z] where / σ(h. Furthermore, using (.7, we find (3.7 J H (z = z (H IJ H I(z J H I (z where, 1 / σ(h. Now, let us give a generalization for these properties. Let H i be a matrix defined by (.1 and H = diag(h 1,..., H k be a matrix in C r r. Here v i is not a negative integer for 1 i k. For the matrix H = diag(h 1,..., H k, the properties (3.1 (3.7 can easily be obtained. Also, if P is an invertible matrix in C r r and H = diag(h 1,..., H k is the Jordan canonical form of A such that H = diag(h 1,..., H k =PAP 1, we can prove the following theorem for the matrix A. Theorem 4. If A is a matrix in C r r which satisfies the condition (.8, and <z<, we obtain d dz [za J A (z] = z A J A I (z where / σ(a, d dz [z A J A (z] = z A J A+I (z, zj A(z =zj A I (z AJ A (z where / σ(a,
7 Bessel Matrix Functions of the First Kind 55 zj A(z = zj A+I (z+aj A (z, J A(z =J A I (z J A+I (z where / σ(a, AJ A (z =z[j A I (z+j A+I (z] where / σ(a, J A (z = z (A IJ A I(z J A I (z where, 1 / σ(a. 4. An Integral Representation for Bessel Matrix Functions of the First Kind In this section, we derive a new integral representation for Bessel matrix functions of the first kind. The integral is given as (4.1 t ( x(t x H J H ( x(t x dx where H is a Jordan block matrix satisfying the condition (.8, <t<. Substituting (.7 in (4.1 and choosing x = ty, it follows that t ( x(t x H J H ( x(t x dx = t H+I 1 ( y(1 y H ( t H y(1 y ( ( 1 m Γ 1 t m y(1 y (H +(m +1I dy ( t H = t H+I ( 1 m ( t m Γ 1 (H +(m +1I 1 y H+mI (1 y H+mI dy.
8 56 Bayram Çek ım and Abdullah Altın From (.3 and (.5, we have t ( x(t x H J H ( x(t x dx = t H+I ( 1 m ( t mi+h Γ 1 (H +(m +1I B(H +(m +1I,H +(m +1I { = t H+I ( 1 m ( t mi+h Γ 1 (H +(m +1I Γ (H +(m +1IΓ 1 (H +(m +I } where H +ni is invertible for all n N. Also, by (. and (.7, we obtain t ( x(t x H J H ( x(t x dx = { πt H+I ( 1 m ( t mi+h Γ 1 (H +(m +1I Γ (H +(m +1I H (m+1i Γ 1 (H +(m +1IΓ 1 ( H + 1 I +(m +1I} = ( πt H+ 1 t H+ 1 I H I ( 1 m 4 = πt H+ 1 I H J H+ 1 I ( t. This result is summarized below: Γ 1 (H + 1 I +(m +1I ( t 4 m Theorem 5. If H is a Jordan block matrix in C r r which satisfies condition (.8 and H + ni is invertible for all n N, <t<, we obtain the following integral representation: t ( x(t x H J H ( x(t x dx = πt H+ 1 I H J H+ 1 I ( t.
9 Bessel Matrix Functions of the First Kind 57 Now, we can give the generalization of Theorem 5. Corollary 1. If A is a matrix in C r r which satisfies condition (.8 and A + ni is invertible for all n N, <t<, we obtain the following integral representation: t ( x(t x A J A ( x(t x dx = πt A+ 1 I A J A+ 1 I ( t. 5. New Relations of Bessel Matrix Functions of the First Kind and Laguerre Matrix Polynomials In this section, we obtain the new relations between Bessel matrix functions of the first kind and Laguerre matrix polynomials. Let A be a matrix in C r r satisfying the condition (.8 and λ be a complex number whose real part is positive. Then, the Laguerre matrix polynomials L (A,λ n (x are defined by [9]: (5.1 L (A,λ n (x = n k= ( 1 k k!(n k! (A + I n [(A + I k ] 1 (λx k, n N. These matrix polynomials have the following generating matrix function: (5. n= λxt L (A,λ n (xt n =(1 t A I e 1 t ; x C,t C, t < 1. Recall that, if M C r r is a positive stable matrix and n Z +, from [1], we have (5.3 Γ(M = lim (n 1! (M 1 n n nm. We are in a position to give the first relation of Bessel matrix functions of the first kind and Laguerre matrix polynomials. Theorem 6. Bessel matrix functions of the first kind and Laguerre matrix polynomials satisfy the relation { ( x (5.4 n H L n n} (H,λ =(λx 1 H J H ( λx lim n
10 58 Bayram Çek ım and Abdullah Altın where x and λ are positive real numbers, n Z +, and H is both Jordan block and positive stable matrix. Proof. Using (5.1,(5.3 and (.7, respectively, we get { ( x lim n H L (H,λ n n { n} n H (H + I n n ( n k λ k n! k! = lim n =Γ 1 (H + I k= =(λx 1 H (λx 1 H k= ( 1 k (H + I 1 k! k (λxk k= =(λx 1 H J H ( λx. Hence, the proof is completed. } ( x k (H + I 1 k n ( 1 k Γ 1 (H +(k +1I(λx k k! Corollary. Bessel matrix functions of the first kind and Laguerre matrix polynomials satisfy the following relation { ( x n A L (A,λ n =(λx n} 1 A J A ( λx lim n where x and λ are positive real numbers, n Z +, and A is a positive stable matrix. Lastly, we present the second relation of Bessel matrix functions of the first kind and Laguerre matrix polynomials. Theorem 7. Bessel matrix functions of the first kind and Laguerre matrix polynomials satisfy the relation (5.5 n= Γ 1 (H +(n +1IL (H,λ n (xt n = e t (λxt 1 H J H ( λxt where H is a Jordan block satisfying the condition (.8, and x, λ and t are positive real numbers.
11 Bessel Matrix Functions of the First Kind 59 Proof. Using (5.1 and (.7, we obtain = = n= n= n,k= Γ 1 (H +(n +1IL (H,λ n (xt n Γ 1 (H + I n! n k= ( n k k! (H + I 1 k (λxk t n ( 1 k n! k! Γ 1 (H +(k +1I(λx k t n+k = e t (λxt 1 H J H ( λxt, which completes the proof. Corollary 3. Bessel matrix functions of the first kind and Laguerre matrix polynomials satisfy the relation n= Γ 1 (A +(n +1IL (A,λ n (xt n = e t (λxt 1 A J A ( λxt where x, λ and t are positive real numbers, and A is a matrix satisfying the condition (.8. Acknowledgements. The authors would like to thank to editors and referees for their valuable comments and suggestions, which have improved the quality of the paper. References [1] Çekim, B. and E. Erkuş-Duman, Integral representations for Bessel matrix functions, Gazi Universtiy Journal of Science 7(1 (14, [] Defez, E. and L. Jódar, Some applications of the Hermite matrix polynomials series expansions, J. Comput. Appl. Math. 99 (1998, [3] Defez, E. and L. Jódar, Chebyshev matrix polynomials and second order matrix differential equations, Util. Math. 61 (, [4] Defez, E., Jódar, L. and A. Law, Jacobi matrix differential equation, polynomial solutions and their properties, Comput. Math. Appl. 48 (4,
12 53 Bayram Çek ım and Abdullah Altın [5] Dunford, N. and J. Schwartz, Linear operators, part I, Interscience, New York, [6] Jódar, L., Legua, M. and A. G. Law, A matrix method of Frobenius, and application to a generalized Bessel equation, Congressus Numerantium 86 (199, [7] Jódar, L., Company, R. and E. Navarro, Solving explicitly the Bessel matrix differential equation, without increasing problem dimension, Congressus Numerantium 9 (1993, [8] Jódar, L., Company, R. and E. Navarro, Bessel matrix functions: explicit solution of coupled Bessel type equations, Utilitas Mathematica 46 (1994, [9] Jódar, L., Company, R. and E. Navarro, Laguerre matrix polynomials and system of second-order differential equations, Appl. Num. Math. 15 (1994, [1] Jódar, L. and J. C. Cortés, Some properties of Gamma and Beta matrix functions, Appl. Math. Lett. 11(1 (1998, [11] Jódar, L. and J. C. Cortés, On the hypergeometric matrix functions, J. Comput. Appl. Math. 99 (1998, [1] Kishka, Z. M. G., Shehata, A. and M. Abul-Dahab, The generalized Bessel matrix polynomials, J. Math. Comput. Sci. ( (1, [13] Lebedev, N. N., Special functions and their applications, Dover, New York, 197. [14] Sastre, J. and L. Jódar, Asymptotics of the modified Bessel and incomplete Gamma matrix functions, Appl. Math. Lett. 16(6 (3, (Received February 8, 13 (Revised December 6, 13 Bayram Çek ım Gazi University Faculty of Science Department of Mathematics Teknikokullar, TR-65 Ankara, Turkey bayramcekim@gazi.edu.tr Abdullah Altın Ankara University Faculty of Science Department of Mathematics Tandoğan, TR-61 Ankara, Turkey altin@science.ankara.edu.tr
On Tricomi and Hermite-Tricomi Matrix Functions of Complex Variable
Communications in Mathematics and Applications Volume (0), Numbers -3, pp. 97 09 RGN Publications http://www.rgnpublications.com On Tricomi and Hermite-Tricomi Matrix Functions of Complex Variable A. Shehata
More informationSome properties of Hermite matrix polynomials
JOURNAL OF THE INTERNATIONAL MATHEMATICAL VIRTUAL INSTITUTE ISSN p) 33-4866, ISSN o) 33-4947 www.imvibl.org /JOURNALS / JOURNAL Vol. 515), 1-17 Former BULLETIN OF THE SOCIETY OF MATHEMATICIANS BANJA LUKA
More informationSome relations on generalized Rice s matrix polynomials
Available at http://pvamu.edu/aam Appl. Appl. Math. ISSN: 93-9466 Vol., Issue June 07, pp. 367 39 Applications and Applied Mathematics: An International Journal AAM Some relations on generalized Rice s
More informationBESSEL MATRIX DIFFERENTIAL EQUATIONS: EXPLICIT SOLUTIONS OF INITIAL AND TWO-POINT BOUNDARY VALUE PROBLEMS
APPLICATIONES MATHEMATICAE 22,1 (1993), pp. 11 23 E. NAVARRO, R. COMPANY and L. JÓDAR (Valencia) BESSEL MATRIX DIFFERENTIAL EQUATIONS: EXPLICIT SOLUTIONS OF INITIAL AND TWO-POINT BOUNDARY VALUE PROBLEMS
More informationGegenbauer Matrix Polynomials and Second Order Matrix. differential equations.
Gegenbauer Matrix Polynomials and Second Order Matrix Differential Equations Polinomios Matriciales de Gegenbauer y Ecuaciones Diferenciales Matriciales de Segundo Orden K. A. M. Sayyed, M. S. Metwally,
More informationSOME RELATIONS ON HERMITE MATRIX POLYNOMIALS. Levent Kargin and Veli Kurt
Mathematical ad Computatioal Applicatios, Vol. 18, No. 3, pp. 33-39, 013 SOME RELATIONS ON HERMITE MATRIX POLYNOMIALS Levet Kargi ad Veli Kurt Departmet of Mathematics, Faculty Sciece, Uiversity of Adeiz
More informationSome applications of the Hermite matrix polynomials series expansions 1
Journal of Computational and Applied Mathematics 99 (1998) 105 117 Some applications of the Hermite matrix polynomials series expansions 1 Emilio Defez, Lucas Jodar Departamento de Matematica Aplicada,
More informationA New Extension of Bessel Matrix Functions
Southeast Asian Bulletin of Mathematics (16) 4: 65 88 Southeast Asian Bulletin of Mathematics c SEAMS. 16 A New Extension of Bessel Matrix Functions Ayman Shehata Deartment of Mathematics, Faculty of Science,
More informationA NOTE ON RATIONAL OPERATOR MONOTONE FUNCTIONS. Masaru Nagisa. Received May 19, 2014 ; revised April 10, (Ax, x) 0 for all x C n.
Scientiae Mathematicae Japonicae Online, e-014, 145 15 145 A NOTE ON RATIONAL OPERATOR MONOTONE FUNCTIONS Masaru Nagisa Received May 19, 014 ; revised April 10, 014 Abstract. Let f be oeprator monotone
More informationBilinear generating relations for a family of q-polynomials and generalized basic hypergeometric functions
ACTA ET COMMENTATIONES UNIVERSITATIS TARTUENSIS DE MATHEMATICA Volume 16, Number 2, 2012 Available online at www.math.ut.ee/acta/ Bilinear generating relations for a family of -polynomials and generalized
More informationBessel Functions Michael Taylor. Lecture Notes for Math 524
Bessel Functions Michael Taylor Lecture Notes for Math 54 Contents 1. Introduction. Conversion to first order systems 3. The Bessel functions J ν 4. The Bessel functions Y ν 5. Relations between J ν and
More informationThis ODE arises in many physical systems that we shall investigate. + ( + 1)u = 0. (λ + s)x λ + s + ( + 1) a λ. (s + 1)(s + 2) a 0
Legendre equation This ODE arises in many physical systems that we shall investigate We choose We then have Substitution gives ( x 2 ) d 2 u du 2x 2 dx dx + ( + )u u x s a λ x λ a du dx λ a λ (λ + s)x
More informationA Note about the Pochhammer Symbol
Mathematica Moravica Vol. 12-1 (2008), 37 42 A Note about the Pochhammer Symbol Aleksandar Petoević Abstract. In this paper we give elementary proofs of the generating functions for the Pochhammer symbol
More informationMatrix Algebra Determinant, Inverse matrix. Matrices. A. Fabretti. Mathematics 2 A.Y. 2015/2016. A. Fabretti Matrices
Matrices A. Fabretti Mathematics 2 A.Y. 2015/2016 Table of contents Matrix Algebra Determinant Inverse Matrix Introduction A matrix is a rectangular array of numbers. The size of a matrix is indicated
More informationA RECURSION FORMULA FOR THE COEFFICIENTS OF ENTIRE FUNCTIONS SATISFYING AN ODE WITH POLYNOMIAL COEFFICIENTS
Georgian Mathematical Journal Volume 11 (2004), Number 3, 409 414 A RECURSION FORMULA FOR THE COEFFICIENTS OF ENTIRE FUNCTIONS SATISFYING AN ODE WITH POLYNOMIAL COEFFICIENTS C. BELINGERI Abstract. A recursion
More informationarxiv:math/ v5 [math.ac] 17 Sep 2009
On the elementary symmetric functions of a sum of matrices R. S. Costas-Santos arxiv:math/0612464v5 [math.ac] 17 Sep 2009 September 17, 2009 Abstract Often in mathematics it is useful to summarize a multivariate
More informationTHE nth POWER OF A MATRIX AND APPROXIMATIONS FOR LARGE n. Christopher S. Withers and Saralees Nadarajah (Received July 2008)
NEW ZEALAND JOURNAL OF MATHEMATICS Volume 38 (2008), 171 178 THE nth POWER OF A MATRIX AND APPROXIMATIONS FOR LARGE n Christopher S. Withers and Saralees Nadarajah (Received July 2008) Abstract. When a
More informationJordan normal form notes (version date: 11/21/07)
Jordan normal form notes (version date: /2/7) If A has an eigenbasis {u,, u n }, ie a basis made up of eigenvectors, so that Au j = λ j u j, then A is diagonal with respect to that basis To see this, let
More informationOn the stirling expansion into negative powers of a triangular number
MATHEMATICAL COMMUNICATIONS 359 Math. Commun., Vol. 5, No. 2, pp. 359-364 200) On the stirling expansion into negative powers of a triangular number Cristinel Mortici, Department of Mathematics, Valahia
More informationOn the least values of L p -norms for the Kontorovich Lebedev transform and its convolution
Journal of Approimation Theory 131 4 31 4 www.elsevier.com/locate/jat On the least values of L p -norms for the Kontorovich Lebedev transform and its convolution Semyon B. Yakubovich Department of Pure
More information1 Assignment 1: Nonlinear dynamics (due September
Assignment : Nonlinear dynamics (due September 4, 28). Consider the ordinary differential equation du/dt = cos(u). Sketch the equilibria and indicate by arrows the increase or decrease of the solutions.
More informationThe Generating Functions for Pochhammer
The Generating Functions for Pochhammer Symbol { }, n N Aleksandar Petoević University of Novi Sad Teacher Training Faculty, Department of Mathematics Podgorička 4, 25000 Sombor SERBIA and MONTENEGRO Email
More informationx exp ( x 2 y 2) f (x) dx. (1.2) The following Laplace-type transforms which are the L 2n transform and the L 4n transform,
Journal of Inequalities and Special Functions ISSN: 17-433, URL: www.ilirias.com/jiasf Volume 8 Issue 517, Pages 75-85. IDENTITIES ON THE E,1 INTEGRAL TRANSFORM NEŞE DERNEK*, GÜLSHAN MANSIMLI, EZGI ERDOĞAN
More informationMath Ordinary Differential Equations
Math 411 - Ordinary Differential Equations Review Notes - 1 1 - Basic Theory A first order ordinary differential equation has the form x = f(t, x) (11) Here x = dx/dt Given an initial data x(t 0 ) = x
More informationRonalda Benjamin. Definition A normed space X is complete if every Cauchy sequence in X converges in X.
Group inverses in a Banach algebra Ronalda Benjamin Talk given in mathematics postgraduate seminar at Stellenbosch University on 27th February 2012 Abstract Let A be a Banach algebra. An element a A is
More informationWorking papers of the Department of Economics University of Perugia (IT)
ISSN 385-75 Working papers of the Department of Economics University of Perugia (IT) The Heat Kernel on Homogeneous Trees and the Hypergeometric Function Hacen Dib Mauro Pagliacci Working paper No 6 December
More informationSpecial Functions of Mathematical Physics
Arnold F. Nikiforov Vasilii B. Uvarov Special Functions of Mathematical Physics A Unified Introduction with Applications Translated from the Russian by Ralph P. Boas 1988 Birkhäuser Basel Boston Table
More informationON THE (p, q) STANCU GENERALIZATION OF A GENUINE BASKAKOV- DURRMEYER TYPE OPERATORS
International Journal of Analysis and Applications ISSN 91-869 Volume 15 Number 17 18-145 DOI: 1894/91-869-15-17-18 ON THE p q STANCU GENERALIZATION OF A GENUINE BASKAKOV- DURRMEYER TYPE OPERATORS İSMET
More informationResearch Article On Generalisation of Polynomials in Complex Plane
Hindawi Publishing Corporation Advances in Decision Sciences Volume 21, Article ID 23184, 9 pages doi:1.1155/21/23184 Research Article On Generalisation of Polynomials in Complex Plane Maslina Darus and
More informationNonlinear Integral Equation Formulation of Orthogonal Polynomials
Nonlinear Integral Equation Formulation of Orthogonal Polynomials Eli Ben-Naim Theory Division, Los Alamos National Laboratory with: Carl Bender (Washington University, St. Louis) C.M. Bender and E. Ben-Naim,
More informationDifferential equations
Differential equations Math 7 Spring Practice problems for April Exam Problem Use the method of elimination to find the x-component of the general solution of x y = 6x 9x + y = x 6y 9y Soln: The system
More informationFIXED POINTS OF MEROMORPHIC SOLUTIONS OF HIGHER ORDER LINEAR DIFFERENTIAL EQUATIONS
Annales Academiæ Scientiarum Fennicæ Mathematica Volumen 3, 2006, 9 2 FIXED POINTS OF MEROMORPHIC SOLUTIONS OF HIGHER ORDER LINEAR DIFFERENTIAL EQUATIONS Liu Ming-Sheng and Zhang Xiao-Mei South China Normal
More informationFirst, we review some important facts on the location of eigenvalues of matrices.
BLOCK NORMAL MATRICES AND GERSHGORIN-TYPE DISCS JAKUB KIERZKOWSKI AND ALICJA SMOKTUNOWICZ Abstract The block analogues of the theorems on inclusion regions for the eigenvalues of normal matrices are given
More informationA Legendre Computational Matrix Method for Solving High-Order Fractional Differential Equations
Mathematics A Legendre Computational Matrix Method for Solving High-Order Fractional Differential Equations Mohamed Meabed KHADER * and Ahmed Saied HENDY Department of Mathematics, Faculty of Science,
More informationTHE HYPERBOLIC METRIC OF A RECTANGLE
Annales Academiæ Scientiarum Fennicæ Mathematica Volumen 26, 2001, 401 407 THE HYPERBOLIC METRIC OF A RECTANGLE A. F. Beardon University of Cambridge, DPMMS, Centre for Mathematical Sciences Wilberforce
More informationON QUADRAPELL NUMBERS AND QUADRAPELL POLYNOMIALS
Hacettepe Journal of Mathematics and Statistics Volume 8() (009), 65 75 ON QUADRAPELL NUMBERS AND QUADRAPELL POLYNOMIALS Dursun Tascı Received 09:0 :009 : Accepted 04 :05 :009 Abstract In this paper we
More informationComplex Analysis - Final exam - Answers
Complex Analysis - Final exam - Answers Exercise : (0 %) Let r, s R >0. Let f be an analytic function defined on D(0, r) and g be an analytic function defined on D(0, s). Prove that f +g is analytic on
More informationA MODULAR IDENTITY FOR THE RAMANUJAN IDENTITY MODULO 35
A MODULAR IDENTITY FOR THE RAMANUJAN IDENTITY MODULO 35 Adrian Dan Stanger Department of Mathematics, Brigham Young University, Provo, Utah 84602, USA adrian@math.byu.edu Received: 3/20/02, Revised: 6/27/02,
More informationPOLYNOMIAL SOLUTIONS OF PELL S EQUATION AND FUNDAMENTAL UNITS IN REAL QUADRATIC FIELDS
J. London Math. Soc. 67 (2003) 16 28 C 2003 London Mathematical Society DOI: 10.1112/S002461070200371X POLYNOMIAL SOLUTIONS OF PELL S EQUATION AND FUNDAMENTAL UNITS IN REAL QUADRATIC FIELDS J. MCLAUGHLIN
More informationIntroduction to orthogonal polynomials. Michael Anshelevich
Introduction to orthogonal polynomials Michael Anshelevich November 6, 2003 µ = probability measure on R with finite moments m n (µ) = R xn dµ(x)
More informationGENERAL ARTICLE Realm of Matrices
Realm of Matrices Exponential and Logarithm Functions Debapriya Biswas Debapriya Biswas is an Assistant Professor at the Department of Mathematics, IIT- Kharagpur, West Bengal, India. Her areas of interest
More informationFinding eigenvalues for matrices acting on subspaces
Finding eigenvalues for matrices acting on subspaces Jakeniah Christiansen Department of Mathematics and Statistics Calvin College Grand Rapids, MI 49546 Faculty advisor: Prof Todd Kapitula Department
More informationSome Formulas for the Principal Matrix pth Root
Int. J. Contemp. Math. Sciences Vol. 9 014 no. 3 141-15 HIKARI Ltd www.m-hiari.com http://dx.doi.org/10.1988/ijcms.014.4110 Some Formulas for the Principal Matrix pth Root R. Ben Taher Y. El Khatabi and
More informationDepartment of Mathematics, University of California, Berkeley. GRADUATE PRELIMINARY EXAMINATION, Part A Fall Semester 2016
Department of Mathematics, University of California, Berkeley YOUR 1 OR 2 DIGIT EXAM NUMBER GRADUATE PRELIMINARY EXAMINATION, Part A Fall Semester 2016 1. Please write your 1- or 2-digit exam number on
More informationNumerical integration formulas of degree two
Applied Numerical Mathematics 58 (2008) 1515 1520 www.elsevier.com/locate/apnum Numerical integration formulas of degree two ongbin Xiu epartment of Mathematics, Purdue University, West Lafayette, IN 47907,
More informationSYMMETRY AND SPECIALIZABILITY IN THE CONTINUED FRACTION EXPANSIONS OF SOME INFINITE PRODUCTS
SYMMETRY AND SPECIALIZABILITY IN THE CONTINUED FRACTION EXPANSIONS OF SOME INFINITE PRODUCTS J MC LAUGHLIN Abstract Let fx Z[x] Set f 0x = x and for n 1 define f nx = ff n 1x We describe several infinite
More informationSolving Random Differential Equations by Means of Differential Transform Methods
Advances in Dynamical Systems and Applications ISSN 0973-5321, Volume 8, Number 2, pp. 413 425 (2013) http://campus.mst.edu/adsa Solving Random Differential Equations by Means of Differential Transform
More informationSome Umbral Calculus Presentations of the Chan-Chyan-Srivastava Polynomials and the Erkuş-Srivastava Polynomials
Proyecciones Journal of Mathematics Vol. 33, N o 1, pp. 77-90, March 2014. Universidad Católica del Norte Antofagasta - Chile Some Umbral Calculus Presentations of the Chan-Chyan-Srivastava Polynomials
More informationTwo-Step Iteration Scheme for Nonexpansive Mappings in Banach Space
Mathematica Moravica Vol. 19-1 (2015), 95 105 Two-Step Iteration Scheme for Nonexpansive Mappings in Banach Space M.R. Yadav Abstract. In this paper, we introduce a new two-step iteration process to approximate
More informationZeros of the Hankel Function of Real Order and of Its Derivative
MATHEMATICS OF COMPUTATION VOLUME 39, NUMBER 160 OCTOBER 1982, PAGES 639-645 Zeros of the Hankel Function of Real Order and of Its Derivative By Andrés Cruz and Javier Sesma Abstract. The trajectories
More informationPersistence and global stability in discrete models of Lotka Volterra type
J. Math. Anal. Appl. 330 2007 24 33 www.elsevier.com/locate/jmaa Persistence global stability in discrete models of Lotka Volterra type Yoshiaki Muroya 1 Department of Mathematical Sciences, Waseda University,
More information1. Partial Fraction Expansion All the polynomials in this note are assumed to be complex polynomials.
Partial Fraction Expansion All the polynomials in this note are assumed to be complex polynomials A rational function / is a quotient of two polynomials P, Q with 0 By Fundamental Theorem of algebra, =
More informationLinear Algebra review Powers of a diagonalizable matrix Spectral decomposition
Linear Algebra review Powers of a diagonalizable matrix Spectral decomposition Prof. Tesler Math 283 Fall 2018 Also see the separate version of this with Matlab and R commands. Prof. Tesler Diagonalizing
More informationSQUARE ROOTS OF 2x2 MATRICES 1. Sam Northshield SUNY-Plattsburgh
SQUARE ROOTS OF x MATRICES Sam Northshield SUNY-Plattsburgh INTRODUCTION A B What is the square root of a matrix such as? It is not, in general, A B C D C D This is easy to see since the upper left entry
More informationExplicit formulas for computing Bernoulli numbers of the second kind and Stirling numbers of the first kind
Filomat 28:2 (24), 39 327 DOI.2298/FIL4239O Published by Faculty of Sciences and Mathematics, University of Niš, Serbia Available at: http://www.pmf.ni.ac.rs/filomat Explicit formulas for computing Bernoulli
More informationA NOTE ON A BASIS PROBLEM
PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY Volume 51, Number 2, September 1975 A NOTE ON A BASIS PROBLEM J. M. ANDERSON ABSTRACT. It is shown that the functions {exp xvx\v_. form a basis for the
More informationarxiv:math-ph/ v1 30 Sep 2003
CUQM-99 math-ph/0309066 September 2003 Asymptotic iteration method for eigenvalue problems arxiv:math-ph/0309066v1 30 Sep 2003 Hakan Ciftci, Richard L. Hall and Nasser Saad Gazi Universitesi, Fen-Edebiyat
More informationSEA s workshop- MIT - July 10-14
Matrix-valued Stochastic Processes- Eigenvalues Processes and Free Probability SEA s workshop- MIT - July 10-14 July 13, 2006 Outline Matrix-valued stochastic processes. 1- definition and examples. 2-
More informationSeries of Error Terms for Rational Approximations of Irrational Numbers
2 3 47 6 23 Journal of Integer Sequences, Vol. 4 20, Article..4 Series of Error Terms for Rational Approximations of Irrational Numbers Carsten Elsner Fachhochschule für die Wirtschaft Hannover Freundallee
More informationHankel Determinant for a Sequence that Satisfies a Three-Term Recurrence Relation
1 3 47 6 3 11 Journal of Integer Sequences, Vol. 18 (015), Article 15.1.5 Hankel Determinant for a Sequence that Satisfies a Three-Term Recurrence Relation Baghdadi Aloui Faculty of Sciences of Gabes Department
More informationConnection Formula for Heine s Hypergeometric Function with q = 1
Connection Formula for Heine s Hypergeometric Function with q = 1 Ryu SASAKI Department of Physics, Shinshu University based on arxiv:1411.307[math-ph], J. Phys. A in 48 (015) 11504, with S. Odake nd Numazu
More informationA Detailed Look at a Discrete Randomw Walk with Spatially Dependent Moments and Its Continuum Limit
A Detailed Look at a Discrete Randomw Walk with Spatially Dependent Moments and Its Continuum Limit David Vener Department of Mathematics, MIT May 5, 3 Introduction In 8.366, we discussed the relationship
More information1. Prove the following properties satisfied by the gamma function: 4 n n!
Math 205A: Complex Analysis, Winter 208 Homework Problem Set #6 February 20, 208. Prove the following properties satisfied by the gamma function: (a) Values at half-integers: Γ ( n + 2 (b) The duplication
More informationGENERALIZATION OF UNIVERSAL PARTITION AND BIPARTITION THEOREMS. Hacène Belbachir 1
#A59 INTEGERS 3 (23) GENERALIZATION OF UNIVERSAL PARTITION AND BIPARTITION THEOREMS Hacène Belbachir USTHB, Faculty of Mathematics, RECITS Laboratory, Algiers, Algeria hbelbachir@usthb.dz, hacenebelbachir@gmail.com
More informationSimplifying Coefficients in a Family of Ordinary Differential Equations Related to the Generating Function of the Laguerre Polynomials
Available at http://pvamu.edu/aam Appl. Appl. Math. ISSN: 1932-9466 Applications and Applied Mathematics: An International Journal (AAM Vol. 13, Issue 2 (December 2018, pp. 750 755 Simplifying Coefficients
More informationX i, AX i X i. (A λ) k x = 0.
Chapter 4 Spectral Theory In the previous chapter, we studied spacial operators: the self-adjoint operator and normal operators. In this chapter, we study a general linear map A that maps a finite dimensional
More informationarxiv:math/ v2 [math.ap] 3 Oct 2006
THE TAYLOR SERIES OF THE GAUSSIAN KERNEL arxiv:math/0606035v2 [math.ap] 3 Oct 2006 L. ESCAURIAZA From some people one can learn more than mathematics Abstract. We describe a formula for the Taylor series
More informationSuccessive Derivatives and Integer Sequences
2 3 47 6 23 Journal of Integer Sequences, Vol 4 (20, Article 73 Successive Derivatives and Integer Sequences Rafael Jaimczu División Matemática Universidad Nacional de Luján Buenos Aires Argentina jaimczu@mailunlueduar
More informationMatrix functions that preserve the strong Perron- Frobenius property
Electronic Journal of Linear Algebra Volume 30 Volume 30 (2015) Article 18 2015 Matrix functions that preserve the strong Perron- Frobenius property Pietro Paparella University of Washington, pietrop@uw.edu
More informationAN ELEMENTARY PROOF OF THE SPECTRAL RADIUS FORMULA FOR MATRICES
AN ELEMENTARY PROOF OF THE SPECTRAL RADIUS FORMULA FOR MATRICES JOEL A. TROPP Abstract. We present an elementary proof that the spectral radius of a matrix A may be obtained using the formula ρ(a) lim
More informationU AdS d+1 /CF T d. AdS d+1
U 00 1 2 U 0 1 1 2 U 2 0 3 4 AdS d+1 /CF T d U 0 1 1 2 AdS d+1 "i #i ± #i "i p 2 ( #i + "i)( #i + "i) 2 A := tr HA c A A c S A := tr HA A log A H = H A H A c A A c "ih" + #ih# 2 ( #i + "i)( #i + "i)
More information16. Local theory of regular singular points and applications
16. Local theory of regular singular points and applications 265 16. Local theory of regular singular points and applications In this section we consider linear systems defined by the germs of meromorphic
More informationNonlinear Programming Algorithms Handout
Nonlinear Programming Algorithms Handout Michael C. Ferris Computer Sciences Department University of Wisconsin Madison, Wisconsin 5376 September 9 1 Eigenvalues The eigenvalues of a matrix A C n n are
More informationPseudo-Boolean Functions, Lovász Extensions, and Beta Distributions
Pseudo-Boolean Functions, Lovász Extensions, and Beta Distributions Guoli Ding R. F. Lax Department of Mathematics, LSU, Baton Rouge, LA 783 Abstract Let f : {,1} n R be a pseudo-boolean function and let
More informationProblem 1A. Find the volume of the solid given by x 2 + z 2 1, y 2 + z 2 1. (Hint: 1. Solution: The volume is 1. Problem 2A.
Problem 1A Find the volume of the solid given by x 2 + z 2 1, y 2 + z 2 1 (Hint: 1 1 (something)dz) Solution: The volume is 1 1 4xydz where x = y = 1 z 2 This integral has value 16/3 Problem 2A Let f(x)
More informationFinite-dimensional spaces. C n is the space of n-tuples x = (x 1,..., x n ) of complex numbers. It is a Hilbert space with the inner product
Chapter 4 Hilbert Spaces 4.1 Inner Product Spaces Inner Product Space. A complex vector space E is called an inner product space (or a pre-hilbert space, or a unitary space) if there is a mapping (, )
More informationQuantum Field Theory Homework 3 Solution
Quantum Field Theory Homework 3 Solution 1 Complex Gaußian Integrals Consider the integral exp [ ix 2 /2 ] dx (1) First show that it is not absolutely convergent. Then we should define it as Next, show
More informationEigenvalues and Eigenvectors. Review: Invertibility. Eigenvalues and Eigenvectors. The Finite Dimensional Case. January 18, 2018
January 18, 2018 Contents 1 2 3 4 Review 1 We looked at general determinant functions proved that they are all multiples of a special one, called det f (A) = f (I n ) det A. Review 1 We looked at general
More informationNon-Relativistic Phase Shifts via Laplace Transform Approach
Bulg. J. Phys. 44 17) 1 3 Non-Relativistic Phase Shifts via Laplace Transform Approach A. Arda 1, T. Das 1 Department of Physics Education, Hacettepe University, 68, Ankara, Turkey Kodalia Prasanna Banga
More informationBlock companion matrices, discrete-time block diagonal stability and polynomial matrices
Block companion matrices, discrete-time block diagonal stability and polynomial matrices Harald K. Wimmer Mathematisches Institut Universität Würzburg D-97074 Würzburg Germany October 25, 2008 Abstract
More informationPermutation transformations of tensors with an application
DOI 10.1186/s40064-016-3720-1 RESEARCH Open Access Permutation transformations of tensors with an application Yao Tang Li *, Zheng Bo Li, Qi Long Liu and Qiong Liu *Correspondence: liyaotang@ynu.edu.cn
More informationLecture I: Asymptotics for large GUE random matrices
Lecture I: Asymptotics for large GUE random matrices Steen Thorbjørnsen, University of Aarhus andom Matrices Definition. Let (Ω, F, P) be a probability space and let n be a positive integer. Then a random
More informationContents. I Basic Methods 13
Preface xiii 1 Introduction 1 I Basic Methods 13 2 Convergent and Divergent Series 15 2.1 Introduction... 15 2.1.1 Power series: First steps... 15 2.1.2 Further practical aspects... 17 2.2 Differential
More informationMath 421 Midterm 2 review questions
Math 42 Midterm 2 review questions Paul Hacking November 7, 205 () Let U be an open set and f : U a continuous function. Let be a smooth curve contained in U, with endpoints α and β, oriented from α to
More informationMATHEMATICAL FORMULAS AND INTEGRALS
HANDBOOK OF MATHEMATICAL FORMULAS AND INTEGRALS Second Edition ALAN JEFFREY Department of Engineering Mathematics University of Newcastle upon Tyne Newcastle upon Tyne United Kingdom ACADEMIC PRESS A Harcourt
More informationPart IB. Complex Analysis. Year
Part IB Complex Analysis Year 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2018 Paper 1, Section I 2A Complex Analysis or Complex Methods 7 (a) Show that w = log(z) is a conformal
More informationThe polynomial part of a restricted partition function related to the Frobenius problem
The polynomial part of a restricted partition function related to the Frobenius problem Matthias Beck Department of Mathematical Sciences State University of New York Binghamton, NY 3902 6000, USA matthias@math.binghamton.edu
More informationEXERCISES IN MODULAR FORMS I (MATH 726) (2) Prove that a lattice L is integral if and only if its Gram matrix has integer coefficients.
EXERCISES IN MODULAR FORMS I (MATH 726) EYAL GOREN, MCGILL UNIVERSITY, FALL 2007 (1) We define a (full) lattice L in R n to be a discrete subgroup of R n that contains a basis for R n. Prove that L is
More informationMORE ON SUMS OF HILBERT SPACE FRAMES
Bull. Korean Math. Soc. 50 (2013), No. 6, pp. 1841 1846 http://dx.doi.org/10.4134/bkms.2013.50.6.1841 MORE ON SUMS OF HILBERT SPACE FRAMES A. Najati, M. R. Abdollahpour, E. Osgooei, and M. M. Saem Abstract.
More informationStolz angle limit of a certain class of self-mappings of the unit disk
Available online at www.sciencedirect.com Journal of Approximation Theory 164 (2012) 815 822 www.elsevier.com/locate/jat Full length article Stolz angle limit of a certain class of self-mappings of the
More informationCYK\2010\PH402\Mathematical Physics\Tutorial Find two linearly independent power series solutions of the equation.
CYK\010\PH40\Mathematical Physics\Tutorial 1. Find two linearly independent power series solutions of the equation For which values of x do the series converge?. Find a series solution for y xy + y = 0.
More informationDefining Incomplete Gamma Type Function with Negative Arguments and Polygamma functions ψ (n) ( m)
1 Defining Incomplete Gamma Type Function with Negative Arguments and Polygamma functions ψ (n) (m) arxiv:147.349v1 [math.ca] 27 Jun 214 Emin Özc. ağ and İnci Ege Abstract. In this paper the incomplete
More informationCOMPLEX ANALYSIS AND RIEMANN SURFACES
COMPLEX ANALYSIS AND RIEMANN SURFACES KEATON QUINN 1 A review of complex analysis Preliminaries The complex numbers C are a 1-dimensional vector space over themselves and so a 2-dimensional vector space
More informationResearch Article Some Monotonicity Properties of Gamma and q-gamma Functions
International Scholarly Research Network ISRN Mathematical Analysis Volume 11, Article ID 375715, 15 pages doi:1.54/11/375715 Research Article Some Monotonicity Properties of Gamma and q-gamma Functions
More information8 Periodic Linear Di erential Equations - Floquet Theory
8 Periodic Linear Di erential Equations - Floquet Theory The general theory of time varying linear di erential equations _x(t) = A(t)x(t) is still amazingly incomplete. Only for certain classes of functions
More informationTEST FOR INDEPENDENCE OF THE VARIABLES WITH MISSING ELEMENTS IN ONE AND THE SAME COLUMN OF THE EMPIRICAL CORRELATION MATRIX.
Serdica Math J 34 (008, 509 530 TEST FOR INDEPENDENCE OF THE VARIABLES WITH MISSING ELEMENTS IN ONE AND THE SAME COLUMN OF THE EMPIRICAL CORRELATION MATRIX Evelina Veleva Communicated by N Yanev Abstract
More informationA trigonometric orthogonality with respect to a nonnegative Borel measure
Filomat 6:4 01), 689 696 DOI 10.98/FIL104689M Published by Faculty of Sciences and Mathematics, University of Niš, Serbia Available at: http://www.pmf.ni.ac.rs/filomat A trigonometric orthogonality with
More informationPerformance Evaluation of Generalized Polynomial Chaos
Performance Evaluation of Generalized Polynomial Chaos Dongbin Xiu, Didier Lucor, C.-H. Su, and George Em Karniadakis 1 Division of Applied Mathematics, Brown University, Providence, RI 02912, USA, gk@dam.brown.edu
More informationOn the number of ways of writing t as a product of factorials
On the number of ways of writing t as a product of factorials Daniel M. Kane December 3, 005 Abstract Let N 0 denote the set of non-negative integers. In this paper we prove that lim sup n, m N 0 : n!m!
More informationThe spectral decomposition of near-toeplitz tridiagonal matrices
Issue 4, Volume 7, 2013 115 The spectral decomposition of near-toeplitz tridiagonal matrices Nuo Shen, Zhaolin Jiang and Juan Li Abstract Some properties of near-toeplitz tridiagonal matrices with specific
More information