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

# sign of permutation

# 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