Can anyone explain this notation to me:

http://i42.tinypic.com/242h1lk.jpg

This is a least squares problem, where all variables are matrices. The parentheses notation is throwing me off. Can anyone explain what that means? Thanks!

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- January 7th 2009, 10:53 AMMassimoMatrix Notation Question
Can anyone explain this notation to me:

http://i42.tinypic.com/242h1lk.jpg

This is a least squares problem, where all variables are matrices. The parentheses notation is throwing me off. Can anyone explain what that means? Thanks! - January 7th 2009, 11:14 AMMush
- January 7th 2009, 12:20 PMMassimo
Thanks, I think't that's what it is.