Let f : A → B et g : B → C be 2 functions

Show that if g ◦ f is injective, then f has to be injective

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- Nov 19th 2009, 03:55 PMhebbyInjective functions
Let f : A → B et g : B → C be 2 functions

Show that if g ◦ f is injective, then f has to be injective - Nov 19th 2009, 04:51 PMFocus
This isn't true, take and .

- Nov 19th 2009, 05:05 PMJose27