Please help! Thank you so much!!! 1. A module P over a ring R is said to be projective if given a diagram of R-module homomor phisms with bottom row exact (i.e. g is surjective), there exists an R-mo...

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Please help! Thank you so much!!!

1. A module P over a ring R is said to be projective if given a diagram of R-module homomor phisms with bottom row exact (i.e

Answer 1

Answer #1

(a) Note Hat te identity map fom Pto P ifts to a homomop uia fom id 9 X be a basis -b F. Denne (b) let : set , (X), at Ceo Re

Answer 2

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