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Vladimir Bondarenko...
Posted: Mon May 05, 2008 7:36 pm
Guest
http://www.planetquantum.com/News/080501.htm

Since our successful publication of 100,000+ hypergeometric
formulas, we have tasked ourselves with the new challenging
goal of online publication of 100,000+ integrals at the same
difficulty level as integrals which can be found in famous
integral tables such as Gradshteyn, I. S. and Ryzhik, I. M.
and Prudnikov, A. P., Brychkov, Yu. A., Marichev, O. I.
galathaea...
Posted: Mon May 05, 2008 8:24 pm
Guest
On May 5, 10:36 pm, Vladimir Bondarenko <v... at (no spam) cybertester.com> wrote:
Quote:
http://www.planetquantum.com/News/080501.htm

Since our successful publication of 100,000+ hypergeometric
formulas, we have tasked ourselves with the new challenging
goal of online publication of 100,000+ integrals at the same
difficulty level as integrals which can be found in famous
integral tables such as Gradshteyn, I. S. and Ryzhik, I. M.
and Prudnikov, A. P., Brychkov, Yu. A., Marichev, O. I.

it is cool how they ordered their hypergeometric list

http://www.planetquantum.com/HyperF/FTable1F2NZ7/Page1.htm

the ability to see the fractions like that
and why the rational points are so "integrable"
(in one abuse of the term)
is important to the whole hypergeometric endeavor

using tables like theirs
larger scale patterns become easier to see

for instance
one might notice that formulae for

H (A, B; x)
p q

appear to relate to formulae for

H ( (X) (A+i)/n, (X) (B+j)/n; x^n * n^s)
np nq

in that many of the arguments and coefficients are the same
but the functions slightly different

one might realise that this is related to the fact that

|m
| H
|n p q

is a np_H_nq with these fractional parameters
and can be expressed as a sum at the cyclotomic multiples of x
in the standard simpson multisection form

tools like this quantum CAS
(windows only and pretty crappy looking if you ask me)
are opening up the ability to map large scale structures

mapping hypergeometrics has been slow but very fruitful

there is a lot of structure there

using multisection and contiguous relations on one of these CAS
and we suddenly can walk over the many rational places of H

and the integer symmetries fold into the rationals
a basis has been given

and the 1_H_1 - 2_H_2 similarities
can be seen as just an instance of a much more general symmetry

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
galathaea: prankster, fablist, magician, liar
 
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