isIdentityQS Usage: i = isIdentityQS(A [,eps]) check whether QSpace A represents a block-diagonal identity matrix. This also checks the corresponding Clebsch-Gordon spaces if any (default: eps=1E-12). (C) AW : May 2006 ; Oct 2010 ; Oct 2014 Was this page helpful? Thanks for your feedback! Thanks for your feedback! Help us improve this page by raising issues in our repository.