12-240/Classnotes for Tuesday November 6

DBN: Classes: 2012-13: 12-240 / Navigation Additions to this web site no longer count towards good deed points. # Week of... Notes and Links 1 Sep 10 About This Class, Tuesday, Thursday 2 Sep 17 HW1, Tuesday, Thursday, HW1 Solutions 3 Sep 24 HW2, Tuesday, Class Photo, Thursday 4 Oct 1 HW3, Tuesday, Thursday 5 Oct 8 HW4, Tuesday, Thursday 6 Oct 15 Tuesday, Thursday 7 Oct 22 HW5, Tuesday, Term Test was on Thursday. HW5 Solutions 8 Oct 29 Why LinAlg?, HW6, Tuesday, Thursday, Nov 4 is the last day to drop this class 9 Nov 5 Tuesday, Thursday 10 Nov 12 Monday-Tuesday is UofT November break, HW7, Thursday 11 Nov 19 HW8, Tuesday,Thursday 12 Nov 26 HW9, Tuesday , Thursday 13 Dec 3 Tuesday UofT Fall Semester ends Wednesday F Dec 10 The Final Exam (time, place, style, office hours times) Register of Good Deeds Add your name / see who's in!

Riddle

Find A and B such that AB - BA = I

Theorems

1. Given U with basis $\alpha$, V with basis $\beta$, W with basis $\gamma ,$ $[T\circ S]_{\alpha }^{\beta }=[T]_{\beta }^{\gamma }\times [S]_{\alpha }^{\beta }$

2. For A $\in M_{(}m\times n)$ and B $\in M_{(}n\times p)$ and C $\in M_{(}p\times q)$, (AB)C = a(BC)

Lecture notes scanned by Zetalda

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