JuliaLang/julia — pull request #1399 by andreasnoackjensen (2012-10-17 20:33:25+00:00)
Title: RFC:Linear algebra. Moore-Penrose inverse, Null Space, some methods and a restriction of inv.

Added some methods for matrix construction. Restricted one(Strdied/Sparse Matrix) to allow only square matrices which again restricted the inv(AbstractMatrix) method to only work for square matrices. Added Moore-Penrose inverse and Null space functions similar to Matlab's. Some tests for these are added and the documentation is updated. This is a new version of the pull request #1382