Lecture 13 - Exact Sequences (Continued)

Exact Sequences (Continued)

[Ptoad]

At 2:36 when the professor explains the short exact sequence

0 → M' → M → M'' → 0,

He says that that the map f: M' → M is injective, and that the map M'' → 0 is surjective.
Did he mean to say f: M' → M is injective and g : M → M'' is surjective with Im(f) = ker(g)?

[sougatapal]

The subtitles are hiding the board work...it's quite irritating