Linear Algebra Review
2009-07-26 04:07
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I spent 3 days on reviewing basic linear algebra stuff. I used the online notes from Paul Dawkins and it can be downloaded from http://tutorial.math.lamar.edu/pdf/LinAlg/LinAlg_Complete.pdf.
This book covers most fundamental and important definitions and theorems in linear algebra. The book articulates stuff clearly and precisely. The theorem I like the most is listed below. The proof is elegant (hint: null space).
Suppose that A is an
matrix with linearly independent columns. Then,
is an invertible matrix.
MPSetEqnAttrs('eq0063','',3,[[23,6,0,-1,-1],[30,8,0,-1,-1],[39,10,0,-1,-1],[35,9,0,-1,-1],[46,12,0,-1,-1],[57,14,0,-2,-2],[97,24,0,-3,-3]]) MPEquation() MPSetEqnAttrs('eq0064','',3,[[21,10,0,-1,-1],[27,13,0,-1,-1],[34,18,0,-1,-1],[31,14,0,-1,-1],[40,20,0,-1,-1],[52,23,0,-2,-2],[84,40,0,-3,-3]]) MPEquation() MPSetEqnAttrs('eq0064','',3,[[21,10,0,-1,-1],[27,13,0,-1,-1],[34,18,0,-1,-1],[31,14,0,-1,-1],[40,20,0,-1,-1],[52,23,0,-2,-2],[84,40,0,-3,-3]]); MPDeleteCode('eq0064') MPSetEqnAttrs('eq0063','',3,[[23,6,0,-1,-1],[30,8,0,-1,-1],[39,10,0,-1,-1],[35,9,0,-1,-1],[46,12,0,-1,-1],[57,14,0,-2,-2],[97,24,0,-3,-3]]); MPDeleteCode('eq0063')
However, some examples are somewhat tedious for me, and the chapter about eigenvalue and eigenvector is kind of short.
This book covers most fundamental and important definitions and theorems in linear algebra. The book articulates stuff clearly and precisely. The theorem I like the most is listed below. The proof is elegant (hint: null space).
Suppose that A is an
matrix with linearly independent columns. Then,
is an invertible matrix.
MPSetEqnAttrs('eq0063','',3,[[23,6,0,-1,-1],[30,8,0,-1,-1],[39,10,0,-1,-1],[35,9,0,-1,-1],[46,12,0,-1,-1],[57,14,0,-2,-2],[97,24,0,-3,-3]]) MPEquation() MPSetEqnAttrs('eq0064','',3,[[21,10,0,-1,-1],[27,13,0,-1,-1],[34,18,0,-1,-1],[31,14,0,-1,-1],[40,20,0,-1,-1],[52,23,0,-2,-2],[84,40,0,-3,-3]]) MPEquation() MPSetEqnAttrs('eq0064','',3,[[21,10,0,-1,-1],[27,13,0,-1,-1],[34,18,0,-1,-1],[31,14,0,-1,-1],[40,20,0,-1,-1],[52,23,0,-2,-2],[84,40,0,-3,-3]]); MPDeleteCode('eq0064') MPSetEqnAttrs('eq0063','',3,[[23,6,0,-1,-1],[30,8,0,-1,-1],[39,10,0,-1,-1],[35,9,0,-1,-1],[46,12,0,-1,-1],[57,14,0,-2,-2],[97,24,0,-3,-3]]); MPDeleteCode('eq0063')
However, some examples are somewhat tedious for me, and the chapter about eigenvalue and eigenvector is kind of short.
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