       Re: How to get rid of If[ ... ] in a result

• To: mathgroup at smc.vnet.net
• Subject: [mg65175] Re: How to get rid of If[ ... ] in a result
• From: "Jens-Peer Kuska" <kuska at informatik.uni-leipzig.de>
• Date: Thu, 16 Mar 2006 06:22:47 -0500 (EST)
• Organization: Uni Leipzig
• References: <dvarv1\$c1j\$1@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

Hi,

Assuming[Element[t/2, Integers],
If[Element[t/2, Integers], x, y] // Simplify
]

or

Refine[
If[Element[t/2, Integers], x, y] // Simplify,
Element[t/2, Integers]
]

or

If[Element[t/2, Integers], x, y] // Simplify[#,
Element[t/2, Integers]] &

??

Regards

Jens

"hanspi" <hanspi at schmid-werren.ch> schrieb im
Newsbeitrag news:dvarv1\$c1j\$1 at smc.vnet.net...
| Dear Mathematica users,
|
| I often get results like the following when I do
symbolic sums, in this
| case of a Sin[ ... ]:
|
| ... ... ... If[2/T Element Integers, x, y] ...
...
|
| Now I know that 2/T is an Integer. How can I
tell Mathematica that this
| is so, such that it removes the 'If'? It seems
that Assumptions don't
| work for sums.
|
| Kind regards,
| Hanspeter
|

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