Blackboard Shots with Prefix "12_240"

121212-175211: Rank PAQ.

121212-174408: Dim of sum (2).

121212-172637: Dim of sum.

121212-172007: Diagonalization (4).

121212-171529: Diagonalization (3).

121212-170919: Diagonalization (2).

121212-165712: Diagonalization.

121212-164834: 2006 Problem 4 (2)

121212-163705: 2006 Problem 4

121212-162324: The matrix for $w\in{\mathbb C}$.

121212-161644: Two equal rows in a determinant.

121105-105425: Rank-nullity.

121024-122650: Office hours.

120919-184518: A proof that $\sqrt{2}$ is irrational.

120917-110028: A union exercise.