Appels and generalized gauss function, pochhammer symbol. On a generalization of laguerre polynomials numdam. By applying the generating function methods and pade approximation. Department of physics indian institute of technology, madras ph5100 quantum mechanics i problem set 7 11. The generalized laguerre series, which is defined around a gamma pdf, is suited for simulating high complex natural phenomena that deviate from gaussianity. Recent advances in nonintrusive polynomial chaos and. The smglv model is implemented by using the laguerre expansion of the kernel technique, the group lasso regularization method, and the multiwavelet expansion scheme based on the timevarying volterra series and generalized linear model, respectively. In this paper, we perform a further investigation for the generalized laguerre polynomials. As applications, we give some illustrative special cases of the main results and show that the closed formula 1. It is clear that the solution can be approximated with subject to.
Orthogonality of laguerre polynomials from generating function. Mar 21, 2018 a variety of polynomials, their extensions and variants have been extensively investigated, due mainly to their potential of applications in diverse research areas. It utilizes the gamma distribution weighted by generalized laguerre polynomials and has. In the special case in which there are no restrictions on singletons. Generalized laguerre expansions of multivariate probability. An efficient algorithm and a fortran 90 module laguerrepol for computing laguerre polynomials l n. I was a little surprised that no default was supplied for alpha. The fdenn architecture formulated for bagleytorvik equation can be seen in figure 1. For a polynomial of the 6th degree, 28 coefficients need to be found. Laguerre functions and differential recursion relations p. There exists a constant 112 such thatfor all k with n 112 polynomials evaluated at zero argument are called hermite numbers. Quantum localization and associated orthogonal polynomials 9. A new class of generalized laguerreeuler polynomials.
A rook polynomial is a special case of one kind of matching polynomial, which is the generating function of the number of kedge matchings in a graph. View related information in the documentation center mathworld. For the related operators, substitutions into essentially the same meixner polynomials of the second kind was used by klimyk to express its eigenvectors. On the galois group of generalized laguerre polynomials. Sister celine polynomials, bateman polynomials, bessel polynomials, laguerre polynomials, generalized rice polynomials and pasternak. Using the differential equation 4 and the recurrence relations 5 of associated laguerre polynomials, it is easy to derive the differential equation. Polynomials laguerreln,lambda,z complex characteristics 4 formulas real part 1 formula imaginary part 1 formula argument 1 formula conjugate value 1 formula. We generalize the wellknown laguerre series approach to approximate multivariate probability density functions pdfs using multidimensional laguerre polynomials. One of the most important properties of the laguerre polynomials is that they constitute an orthogonal polynomial system with respect to the weight function e xx on the interval 0. The proposed formula is based on the generalized laguerre. Functions are provided to evaluate the polynomials, determine their zeros, produce their polynomial coefficients, produce related quadrature rules, project other functions onto these polynomial bases, and integrate double and triple products of the polynomials.
Generalized 2d laguerre polynomials and their quaternionic. A gammalaguerre pdf model the approach introduced in 6 and repeated here for clarity is discussed and presented in 3 as the gammalaguerre gl pdf model utilizes the gamma distribution weighted by generalized laguerre polynomials and has the form. Further mandel 3 obtained some properties of simple bessel polynomials considered by krall and frink 4. So we study generalizations of the classical laguerre polynomials which are also further generalizations of the laguerre type and koornwinders generalized laguerre polynomials. The orthogonality with respect to the laguerre measure may be proved as follows. Pdf some new classes of generalized apostoleuler and. A sparse multiwaveletbased generalized laguerrevolterra. In this paper, the modified generalized laguerre operational matrix mglom of caputo fractional derivatives is constructed and implemented in combination with the spectral tau method for solving linear multiterm fdes on the halfline. In this work, we focus on generalized polynomial chaos using the wieneraskey scheme,1 in which hermite, legendre, laguerre, jacobi, and generalized laguerre orthogonal polynomials are used for modeling the e. Pathan and khan 5 discussed some properties of two variable laguerre polynomials studied by dattoli and torre 6,7. Laguerre is a collection of programmes for computing the asymptotic expansions of generalized laguerre polynomials in the complex plane.
These generalized freud polynomials arise from a symmetrization of semiclassical laguerre polynomials. In particular, we obtain a new addition formula for the. Among them, an implicit summation formula and additionsymmetry identities for generalized laguerre poly. Generalised heinestieltjes and van vleck polynomials associated with integrable bcs models we will present new results concerning numerical methods to study. Generalised heinestieltjes and van vleck polynomials. Pdf in this paper, we introduce the two variable generalized laguerre polynomials 2vglp g l. The perrin conjugate and the laguerre orthogonal polynomial. Other articles where laguerre polynomial is discussed. Our combinatorial approach explains and generalizes this coincidence. The legendre, laguerre, and hermite equations are all homogeneous second order sturmliouville equations.
In this paper, we introduce generalized laguerre polygenocchi polynomials and investigate some of their properties and identities, which were found to extend some known results. Generalized laguerre polynomials and quantum mechanics. We study the algebraic properties of generalized laguerre polynomials for negative integral values of the parameter. Hermite solution of bagleytorvik equation of fractional order. In this sequel, we introduce a new class of generalized laguerreeuler polynomials and present certain potentially useful formulas and identities such as implicit summation formulae and symmetry identities. Since the class of quaternionic cs also has a similar structure, we can also obtain similar distributions with quaternions as parameter. Laguerre s equation is equivalent to the statement that l m x is the eigenfunction with eigenvalue m of the second order di erential operator l x d2. Generalized laguerre interpolation and pseudospectral.
Generalized laguerre function and laguerre polynomials. The rodrigues formula for the laguerre polynomials is. This paper deals with general expansions which gives as special cases involving jacobi and laguerre polynomials, lauricella, appell and generalized gauss function. Pdf on the twovariable generalized laguerre polynomials. Gaussian, hermitegaussian, and laguerregaussian beams. Laguerrel can be evaluated to arbitrary numerical precision. Many polynomials were studied such laguerre, jacobi. Generalized rook polynomials and orthogonal polynomials 3 the same block. Solutions to the laguerre differential equation with are called laguerre polynomials. Pdf computations for powerinthebucket measurements of. The matlab and sage versions also compute plots like in the main reference article, give an indication for heuristics, allow printing source or latex code for higher order terms and contain a simple.
Both expressions turn out to be multiple sums involving generalized laguerre polynomials. The operational matrix of caputo fractional derivatives of. Expand the following derivative using the result of the exercise 10. Stochastic modeling of flowstructure interactions using. The rook polynomial of a rectangular chessboard is closely related to the generalized laguerre. Pdf the theory of generalized bessel functions has found significant applications in the analysis of radiation phenomena, associated with. The laguerre polynomials are illustrated above for and, 2. Generalized laguerre functions and differential recursion. Pdf the generalized laguerre polynomials, the associated bessel. Pdf the generalized laguerre polynomials, the associated. The use of generalized laguerre polynomials in spectral. In this approach, truncated modified generalized laguerre polynomials mglp together with the modified generalized laguerre operational matrix of caputo. The generalized laguerre polynomials, the associated bessel functions and application to propagation problems.
What links here related changes upload file special pages permanent link page. In this paper we recover some of these results using yet another method. Laguerre polynomials the hermite polynomials can be expressed as a special case of the laguerre polynomials. Askeychaos the originial polynomial chaos 7, 8 employs the hermite polynomials in the random space as the trial basis to expand the stochastic processes. In this paper, we introduce a new class of degenerate hermite polybernoulli polynomials and give someidentities of these polynomials related to the stirling numbers of the second kind. The question of equivalence of quantizations in regard to the harmonic oscillator 16 10. A note on degenerate hermite polybernoulli numbers and. Hermite and laguerre polynomials college of charleston. In this paper, a new approximate formula of the fractional derivatives is derived. Divisibility properties of generalized laguerre polynomials. On the analytical and numerical properties of the truncate. Generalized laguerre polynomials wolfram functions site. Finally, we prove that each simple zero of the generalized laguerre.
Efficient computation of laguerre polynomials sciencedirect. The wigner distribution function for the onedimensional. On generalized laguerre polynomials with real and complex. On generalization of sister celines polynomials khursheed ahmad, m. David department of chemistry university of connecticut storrs, connecticut 062693060 dated.
Then they are also named generalized laguerre polynomials, as will be done here alternatively associated laguerre polynomials or, rarely, sonine polynomials, after their inventor nikolay yakovlevich sonin. Laguerre polynomials bessel functions the gamma function. The solutions usually proceed by series expansion frobenius method, and. Generalized laguerre polynomial file exchange matlab central. In the same manner using the cs, one may obtain more generalized probability distributions. The mathematical model can be the linear combinations of the networks represented above. The legendre, laguerre, and hermite polynomials thomas coverson, savarnik dixit, alysha harbour, and tyler otto abstract. This connection is explored a little further in section 4, but a lot of work remains to be done in this area. Properties of a class of generalized freud polynomials.
It is wellknown that the laguerre polynomials are all hyperbolic i. Introduction d university of north carolina at charlotte. In mathematics, the laguerre polynomials, named after edmond laguerre 18341886, are. For nonnegative integer values of n, the function returns the generalized laguerre polynomials that are orthogonal with respect to the scalar product. The standard threeterm recurrence relation satisfied by the polynomials and different types of asymptotic expansions valid for n large and. Then they are also named generalized laguerre polynomials, as will be done here. In terms of the probabilists polynomials this translates to relations to other functions laguerre polynomials the hermite polynomials can be expressed as a special case of the laguerre polynomials. This method is similar to that of besnier,ll who used it to solve sacherersintegral equations. Plots then show that the wigner distribution function for the ground state of the parabose oscillator is similar in behaviour to the wigner distribution function of the.
This orthogonal series expansion is also known as a fourier laguerre series expansion or a generalized fourier series expansion recurrence relation. Some identities on bernoulli and euler polynomials arising. Algebraic properties of a family of generalized laguerre. Download all formulas for this function mathematica notebook pdf file. A study of generalized laguerre polygenocchi polynomials. Most special functions arise as solutions to \di cult odes, meaning ones not solvable by exponentials or polynomials. On the completeness of the generalized laguerre polynomials. Some identities for the generalized laguerre polynomials emis. In this case we only have one endpoint of the interval of orthogonality of the classical orthogonal polynomials. Some identities for the generalized laguerre polynomials. The laguerre polynomials are orthogonal with weight function. The combinatorial interpretation of the integral of a product of charlier polynomials given by zeng 27 can be explained in terms of partition polynomials. Using the cs obtained with 2d hermite polynomials generalized gamma and poissons distributions were obtained in. From the properties of the generalized laguerre polynomials 1.
Check header files for namespace usage can a warlock with book of ancient secrets scribe a known spell into a scroll, replace the spell with a new one, and still be able to cast it. The main object of this paper is to introduce and investigate two new classes of generalized apostoleuler and apostolgenocchi polynomials. Aug 16, 2007 the higher order polynomials are computable, and the code is indeed efficient. When n is not a nonnegative integer, laguerrel returns the laguerre function.
More generally, a laguerre function is a solution when n is not necessarily a nonnegative integer. I checked a few polynomials up to about order 10, and the coefficients were accurate. Evaluation of nonintrusive approaches for wieneraskey. The solution of nonlinear random oscillators subject to stochastic forcing is investi. In 12, we derived some special generating functions for products of two laguerre 2d polynomials. As with the bessel functions, one can study their infinite series, recursion formulas, generating functions, asymptotic series, integral representations, and other properties. In this paper, by using generalized hypergeometric functions of the type 2 2 f, an extension of the laguerre polynomials is introduced and similar to those relating to the laguerre polynomials, a. Laguerre integrals and matrix elements 21 references 22 date. We extend magnuss results for freud weight, by considering polynomials orthogonal with respect to a generalized freud weight, by studying the theory of painlev e equations. The asymptotic zero distribution for the generalized laguerre polynomials and several others with real and degree dependent parameter n nn. The presentmethodis also somewhatsimilar to thatofrenieri,8 who used anexpansion in terms ofhermite polynomials to solve the fokkerplanckequation. These sets are less common in mathematical physics than the legendre and bessel functions of chapters 11 and 12, but hermite polynomials occur in solutions of the simple harmonic oscillator of quantum mechanics and laguerre polynomials in wave functions of the hydrogen atom. In this paper, we derive some interesting identities on bernoulli and euler polynomials by using the orthogonal property of laguerre polynomials.
Using our weighted lattice path enumeration model, we can show a very simple formula expressing each jacobi polynomial p0. A laguerre polynomial at one point can be expressed in terms of neighboring laguerre polynomials at the same point. Generating functions for products of special laguerre 2d and. To be coherent with the rest of the article, i have changed the few examples of laguerre polynomials to the standard previously used in the article. In particular, we focus on generalized polynomial chaos using the wieneraskey scheme,1 in which hermite, legendre, laguerre, jacobi, and generalized laguerre orthogonal polynomials are used for modeling the e. The approach introduced by barakat in reference 6 and discussed in 8,9 as the gammalaguerre gl pdf model is defined as follows.
598 1105 1117 606 1493 1369 470 930 163 1445 543 165 723 948 245 577 703 1499 827 958 1634 1616 1121 829 1482 762 959 76 1113 123 1305 1377 705