Global Information Lookup Global Information

Confluent hypergeometric function information


Plot of the Kummer confluent hypergeometric function 1F1(a;b;z) with a=1 and b=2 and input z² with 1F1(1,2,z²) in the complex plane from -2-2i to 2+2i with colors created with Mathematica 13.1
Plot of the Kummer confluent hypergeometric function 1F1(a;b;z) with a=1 and b=2 and input z² with 1F1(1,2,z²) in the complex plane from -2-2i to 2+2i with colors created with Mathematica 13.1

In mathematics, a confluent hypergeometric function is a solution of a confluent hypergeometric equation, which is a degenerate form of a hypergeometric differential equation where two of the three regular singularities merge into an irregular singularity. The term confluent refers to the merging of singular points of families of differential equations; confluere is Latin for "to flow together". There are several common standard forms of confluent hypergeometric functions:

  • Kummer's (confluent hypergeometric) function M(a, b, z), introduced by Kummer (1837), is a solution to Kummer's differential equation. This is also known as the confluent hypergeometric function of the first kind. There is a different and unrelated Kummer's function bearing the same name.
  • Tricomi's (confluent hypergeometric) function U(a, b, z) introduced by Francesco Tricomi (1947), sometimes denoted by Ψ(a; b; z), is another solution to Kummer's equation. This is also known as the confluent hypergeometric function of the second kind.
  • Whittaker functions (for Edmund Taylor Whittaker) are solutions to Whittaker's equation.
  • Coulomb wave functions are solutions to the Coulomb wave equation.

The Kummer functions, Whittaker functions, and Coulomb wave functions are essentially the same, and differ from each other only by elementary functions and change of variables.

and 24 Related for: Confluent hypergeometric function information

Request time (Page generated in 0.9027 seconds.)

Confluent hypergeometric function

Last Update:

mathematics, a confluent hypergeometric function is a solution of a confluent hypergeometric equation, which is a degenerate form of a hypergeometric differential...

Word Count : 4525

Hypergeometric function

Last Update:

ordinary hypergeometric function 2F1(a,b;c;z) is a special function represented by the hypergeometric series, that includes many other special functions as...

Word Count : 7121

Generalized hypergeometric function

Last Update:

(Gaussian) hypergeometric function and the confluent hypergeometric function as special cases, which in turn have many particular special functions as special...

Word Count : 7729

Whittaker function

Last Update:

mathematics, a Whittaker function is a special solution of Whittaker's equation, a modified form of the confluent hypergeometric equation introduced by...

Word Count : 1064

Incomplete gamma function

Last Update:

{z^{s+k}}{s+k}}={\frac {z^{s}}{s}}M(s,s+1,-z),} where M is Kummer's confluent hypergeometric function. When the real part of z is positive, γ ( s , z ) = s − 1...

Word Count : 7150

Hermite polynomials

Last Update:

Confluent hypergeometric functions of the first kind. The conventional Hermite polynomials may also be expressed in terms of confluent hypergeometric...

Word Count : 10080

Beta distribution

Last Update:

characteristic function of the beta distribution to a Bessel function, since in the special case α + β = 2α the confluent hypergeometric function (of the first...

Word Count : 40369

Parabolic cylinder function

Last Update:

; z ) {\displaystyle \;_{1}F_{1}(a;b;z)=M(a;b;z)} is the confluent hypergeometric function. Other pairs of independent solutions may be formed from linear...

Word Count : 1179

List of mathematical functions

Last Update:

function Riesz function Hypergeometric functions: Versatile family of power series. Confluent hypergeometric function Associated Legendre functions Meijer G-function...

Word Count : 1069

Gaussian beam

Last Update:

real-valued, Γ(x) is the gamma function and 1F1(a, b; x) is a confluent hypergeometric function. Some subfamilies of hypergeometric-Gaussian (HyGG) modes can...

Word Count : 6858

Fresnel integral

Last Update:

{i^{l}}{(m+nl+1)}}{\frac {x^{m+nl+1}}{l!}}} is a confluent hypergeometric function and also an incomplete gamma function ∫ x m e i x n d x = x m + 1 m + 1 1 F 1...

Word Count : 2647

Coulomb wave function

Last Update:

Coulomb potential and can be written in terms of confluent hypergeometric functions or Whittaker functions of imaginary argument. The Coulomb wave equation...

Word Count : 1970

Error function

Last Update:

Mittag-Leffler function, and can also be expressed as a confluent hypergeometric function (Kummer's function): erf ⁡ x = 2 x π M ( 1 2 , 3 2 , − x 2 ) . {\displaystyle...

Word Count : 7352

Lambert W function

Last Update:

stationary one-dimensional Schrödinger equation in terms of the confluent hypergeometric functions. The potential is given as V = V 0 1 + W ( e − x σ ) . {\displaystyle...

Word Count : 11591

Laguerre polynomials

Last Update:

{1}{(1-t)^{\alpha +1}}}e^{-tx/(1-t)}.} Laguerre functions are defined by confluent hypergeometric functions and Kummer's transformation as L n ( α ) ( x...

Word Count : 5768

Chi distribution

Last Update:

, z ) {\displaystyle M(a,b,z)} is Kummer's confluent hypergeometric function. The characteristic function is given by: φ ( t ; k ) = M ( k 2 , 1 2 , −...

Word Count : 1743

Bateman function

Last Update:

In mathematics, the Bateman function (or k-function) is a special case of the confluent hypergeometric function studied by Harry Bateman(1931). Bateman...

Word Count : 575

Wigner semicircle distribution

Last Update:

where 1F1 is the confluent hypergeometric function and J1 is the Bessel function of the first kind. Likewise the moment generating function can be calculated...

Word Count : 985

Exponential integral

Last Update:

a=0.} Another connexion with the confluent hypergeometric functions is that E1 is an exponential times the function U(1,1,z): E 1 ( z ) = e − z U ( 1...

Word Count : 3317

Normal distribution

Last Update:

the plain and absolute moments can be expressed in terms of confluent hypergeometric functions 1 F 1 {\displaystyle {}_{1}F_{1}} and U . {\displaystyle U...

Word Count : 22359

Humbert series

Last Update:

confluent hypergeometric series 1F1 of one variable and the confluent hypergeometric limit function 0F1 of one variable. The first of these double series was...

Word Count : 1036

Rice distribution

Last Update:

b ; z ) {\displaystyle M(a,b,z)=_{1}F_{1}(a;b;z)} is the confluent hypergeometric function of the first kind. When k is even, the raw moments become...

Word Count : 3150

Multimodal distribution

Last Update:

deviation of 1. R has a known density that can be expressed as a confluent hypergeometric function. The distribution of the reciprocal of a t distributed random...

Word Count : 6321

Heun function

Last Update:

the 24 symmetries of the hypergeometric differential equations obtained by Kummer. The symmetries fixing the local Heun function form a group of order 24...

Word Count : 718

PDF Search Engine © AllGlobal.net