Re: Problem Replacing part of NonCommutativeMultiply
- To: mathgroup at smc.vnet.net
- Subject: [mg104542] Re: [mg104506] Problem Replacing part of NonCommutativeMultiply
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Tue, 3 Nov 2009 02:56:39 -0500 (EST)
- Reply-to: hanlonr at cox.net
sub1 = NonCommutativeMultiply[
___ , r, e, r, e, ___] -> 0;
sub2 = ___ ** r ** e ** r ** e ** ___ -> 0;
g ** a ** p ** r ** e ** r ** e /. sub1
0
g ** a ** p ** r ** e ** r ** e /. sub2
0
r ** e ** r ** e /. sub1
0
r ** e ** r ** e /. sub2
0
g ** a ** p ** r ** e ** r ** e ** h /. sub1
0
g ** a ** p ** r ** e ** r ** e ** h /. sub2
0
Bob Hanlon
---- "Iv=C3=A1n Lazaro" <gaminster at gmail.com> wrote:
=============
Dear all,
I'm working with a huge amount (2000) of terms of this tipe:
g**a**p**r**e**r**e
But a lot of them are cero. The problem is that i'm not able to set
r**e**r**e->0 in such expresions. If I do g**a**p**r**e**r**e/.r**e**r**e->0
nothing happens.
Do you have some idea?
Thanks a lot!