- To: mathgroup at smc.vnet.net
- Subject: [mg35654] MatrixForm Oddity
- From: AES <siegman at stanford.edu>
- Date: Wed, 24 Jul 2002 02:06:32 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Construct a matrix which has symbol a in the upper left (1,1) element and symbols I c in the rest of the top row and the left-most column, dot it into itself three times, and display the result using MatrixForm. The top row in the display now has I c (a^2 - 4c^2) ; the left-most column now has I a^2 c - 4 I c^3 . Not exactly a serious problem, but not exactly clean either. Makes it harder to see at a glance whether a given matrix is symmetric above the diagonal (could be a problem in a more complicated situation). Could possibly mess up the behavior of pattern matching rules? ?????