Blackboard Shots with Prefix "14_1100"

141214-165700: Invertible polynomials.

141214-152209: Surjectivity of $\iota$.

141214-144831: gcd and lcm.

141214-141653: Extension of scalars.

141124-155102: The definition of $M\oplus N$.

141121-135027: Proof of the main theorem (2).

141121-133553: Proof of the main theorem.

140924-155521: Gaussian elimination done right.