Integrals of product of hypergeometric functions

Click For Summary
SUMMARY

The discussion centers on the evaluation of integrals involving products of hypergeometric functions, specifically the integral of the form ∫_0^1 {}_p F_q(\{a_1,\ldots,a_p\},\{b_1,\ldots,b_q\},y){}_{p'} F_{q'}(\{a'_1,\ldots,a'_{p'}\},\{b'_1,\ldots,b'_{q'}\},y)dy. The user, Pere, notes that while the convolution property of Meijer-G functions provides solutions for infinite limits, Mathematica struggles with more complex cases. He successfully reduces the integral to ∫_0^1 {\operatorname{J}_1(2y) {}_2\operatorname{F}_3(\{1,1\},\{2,2,2\},y)dy} but seeks further insights into potential solutions or resources.

PREREQUISITES
  • Understanding of hypergeometric functions, specifically _p F_q notation.
  • Familiarity with Meijer-G functions and their convolution properties.
  • Knowledge of Bessel functions and their integral representations.
  • Experience with Mathematica for symbolic computation.
NEXT STEPS
  • Research the properties and applications of Meijer-G functions in integral calculus.
  • Explore advanced techniques for evaluating integrals of hypergeometric functions.
  • Investigate the use of recursion formulas and identities for contiguous functions in integral reduction.
  • Examine additional resources or literature on special functions, particularly those that extend beyond standard handbooks.
USEFUL FOR

Mathematicians, physicists, and researchers working with special functions, integral calculus, and computational tools like Mathematica, particularly those dealing with complex integrals of hypergeometric functions.

Pere Callahan
Messages
582
Reaction score
1
Hello,

I am wondering about integrals of the form

<br /> \int_0^1 {}_p F_q(\{a_1,\ldots,a_p\},\{b_1,\ldots,b_q\},y){}_{p&#039;} F_{q&#039;}(\{a&#039;_1,\ldots,a&#039;_{p&#039;}\},\{b&#039;_1,\ldots,b&#039;_{q&#039;}\},y)dy<br />

integrals of product of hypergeometric functions.

I know that if the limits of integration were +/- infty the convolution property of Meijer-G functions would give an answer to that question. I also know that for the special case of Bessel functions there are formulas known by Mathematica.

If at least one of the hypergeometric functions, however, is more complicated, Mathematica reaches its limits.

My question is if anyone knows where I could fine more informaiton on this (yes, I checked the handbooks of special functions, and tables of integrals).

Thanks a lot

Pere
 
Physics news on Phys.org
So maybe I should phrase the question more explicitly. Using recursion formulas and identities for contiguous functions, I am able to reduce the general integrals to
<br /> \int_0^1 {\operatorname{J}_1(2y) {}_2\operatorname{F}_3(\{1,1\},\{2,2,2\},y)dy}.<br />

As I said, Mathematica and similar programs seem to be unable to express this integrals in terms of known special functions but this does not convince me that it is impossible.

Any input is gratefully appreciated,

pere
 

Similar threads

  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 10 ·
Replies
10
Views
3K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 3 ·
Replies
3
Views
9K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 11 ·
Replies
11
Views
3K
Replies
1
Views
2K
  • · Replies 9 ·
Replies
9
Views
2K