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- Newsgroups: sci.math
- Path: sparky!uunet!gatech!destroyer!cs.ubc.ca!fornax!graham
- From: graham@cs.sfu.ca (Graham Finlayson)
- Subject: Addition of Vector Spaces
- Message-ID: <1993Jan5.222545.14021@cs.sfu.ca>
- Keywords: Vector Spaces
- Organization: CSS, Simon Fraser University, Burnaby, B.C., Canada
- Date: Tue, 5 Jan 1993 22:25:45 GMT
- Lines: 22
-
- I was wondering if anyone has come across the following problem:
-
- Given 2 mXn matrices A and B, where m>n. The columns of A and B span
- n-dimensional subspaces of m-space. What are the properties of the
- subspaces spanned by linear combinations of A and B.
-
- For example, given a 3rd mXn matrix C how can you check if there exists
- a linear combination of A and B such that the space defined by (a*A+b*B)
- intersects the space spanned by C in
- at least 1 dimension?
-
- Any pointers you can give would be appreciated.
-
- Please email responses to
-
- grahan@cs.sfu.ca
-
- Graham
-
- (If there is any interest I will post a summary)
-
-
-