Groups Lecture 8

in which we show that the sign of a permutation is a surjective group homomorphism, meet cosets and prove Lagrange’s Theorem.

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Groups Lecture 7

in which we prove that disjoint cycle notation works and  get a first glimpse of the sign of a permutation.

Groups Lecture 8

in which we show that the sign of a permutation is a surjective group homomorphism, and meet cosets.

Groups Lecture 7

in which we prove that disjoint cycle notation works and  get a first glimpse of the sign of a permutation.