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Jun 1, 2010 at 1:27 vote accept Steve Huntsman
Jun 1, 2010 at 1:27 history bounty ended Steve Huntsman
May 26, 2010 at 14:45 answer added Robby McKilliam timeline score: 2
May 25, 2010 at 3:07 comment added Jason Dyer This is completely out of my area so this is a comment rather than an answer, but you might try the optics problem of direct ray tracing which involves a large number of small matrices.
May 25, 2010 at 2:10 history bounty started Steve Huntsman
Mar 21, 2010 at 15:45 comment added Steve Huntsman As another potential framework for examples, consider a sequence $s \in \{1,\dots,d\}^\mathbb{Z}$. Each doublet $(s_\ell,s_{\ell+1})$ provides a pair. This ties into constructions involving generalized de Bruijn structures.
Mar 21, 2010 at 14:28 history edited Steve Huntsman CC BY-SA 2.5
fixed link, minor clarification to expression for root lattice
Mar 21, 2010 at 4:01 comment added Steve Huntsman I should also mention that I'm only interested in real-valued matrices, and preferably nonnegative ones.
Mar 21, 2010 at 3:18 history asked Steve Huntsman CC BY-SA 2.5