Series on HypergeometricPFQ
- To: mathgroup at smc.vnet.net
- Subject: [mg126351] Series on HypergeometricPFQ
- From: Yi Wang <tririverwangyi at gmail.com>
- Date: Thu, 3 May 2012 04:37:21 -0400 (EDT)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
Hi, all
I encountered errors when doing the following expansion:
Series[HypergeometricPFQ[{a, a}, {b, c, d}, x], {x, \[Infinity], 0}]
The error message is:
Table::iterb: "Iterator {K3,0,Ceiling[-Re[a]]} does not have appropriate bounds. "
Any idea what's wrong in the above expansion? Many thanks!
--- work around ---
Alternatively, I could first add a small eps factor in the expansion, and eventually take it to zero:
Series[HypergeometricPFQ[{a, a+eps}, {b, c, d}, x], {x, \[Infinity], 0}]
The result looks reasonable. However it is very complicated and unnatural for a large expression.