- #1

Math Amateur

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MHB

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Currently I am focused on Section 3.2 Exact Sequences in [FONT=MathJax_Main]Mod[/FONT][FONT=MathJax_Math]

*R*[/FONT] ... ...

I need some help in order to fully understand Proposition 3.2.4 ...

Proposition 3.2.4 reads as follows:

View attachment 8076

Can someone please explain exactly how Proposition 3.2.3 establishes Proposition 3.2.4 ...

Help will be much appreciated ...

Peter