On 16.08.2012 15:16, someone wrote:
This holds:╭─╮1, 1 ⎛1 3 │ ⎞ ╭─╮1, 1 ⎛1 3 │ ⎞ ╭─╮0, 2 ⎛3, 1 │ ⎞ ╭─╮0, 2 ⎛3, 1 │ ⎞ │╶┐ ⎜ │ -1⎟ │╶┐ ⎜ │ 1⎟ │╶┐ ⎜ │ -1⎟ │╶┐ ⎜ │ 1⎟ ╰─╯2, 2 ⎝2 0 │ ⎠ ╰─╯2, 2 ⎝2 0 │ ⎠ ╰─╯2, 2 ⎝ 2, 0 │ ⎠ ╰─╯2, 2 ⎝ 2, 0 │ ⎠ - ─────────────────── + ────────────────── - ───────────────────────── + ──────────────────────── 2 2 2 2 = 0 But sympy can not do it. (I don't remember where I encountered these G functions but they arose from a computation within sympy.) What should we add to be able to simplify this expression?
I don't know. In general, we are not good at simplifying sums of hypergeometric/meijerg functions (that is, there is no code for it).
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