Unprotect Plus, no automatic collection
- To: mathgroup at smc.vnet.net
- Subject: [mg39090] Unprotect Plus, no automatic collection
- From: Friedrich Laher <mathefritz at schmieder-laher.de>
- Date: Wed, 29 Jan 2003 03:35:47 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
when Unprotect[Plus]; Plus[w1,w2] = -1 is commanded and then the expanding of a product gives a*w1 + a*w2 + ... that is not collapsed to -a + ... automatically, even if selecting that a*w1 + a*w1 and the applying Simplify to it from al palette, does it. What can be done to automize it?