Revision as of 08:26, 2 December 2009 edit Nbarth (talk \| contribs) Autopatrolled, Extended confirmed users, Pending changes reviewers, Rollbackers 35,278 edits m →Algebra of upper triangular matrices: typo ← Previous edit		Revision as of 16:22, 4 March 2011 edit undo 67.239.155.230 (talk) →Forward and Back Substitution: new section Next edit →
Line 81: :“Square” is generally required, square matrices being generally more interesting. For non-square matrices one generally calls these “trapezoidal” matrices, which is mentioned in the article. :—Nils von Barth ([[User:Nbarth\|nbarth]]) ([[User talk:Nbarth\|talk]]) 08:24, 2 December 2009 (UTC) == Forward and Back Substitution == The outline has a heading for "Forward and back substitution" with a sub section for "Forward substitution" but no subsection for Backward substitution. Additionally, an equation is only given for forward sub. Furthermore, the algorithm provided for back sub is dependent on the first part solving Ly = b. No algorithm or equations are given for back sub of a given upper diagonal matrix.

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