Let α_{1}:A→B , α_{2}:A→B andβ:B→C be maps of the left R-module for whichβ is a monomorphism andα_{1}β=α_{2}β. Show thatα_{1}=α_{2. }

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- Feb 27th 2013, 10:02 AMejenaHomomorphisms of modules
Let α

_{1}:A→B , α_{2}:A→B and*β*:B→C be maps of the left R-module for which*β is a monomorphism and*α_{1}*β=*α_{2}*β. Show that*α_{1}*=*α_{2. }