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I am reading Anderson and Feil - A First Course in Abstract Algebra.
I am currently focused on Ch. 8: Integral Domains and Fields ...
I need some help with an aspect of the proof of Theorem 8.6 ...
Theorem 8.6 and its proof read as follows:
View attachment 6434
In the above text, Anderson and Feil write the following:
" ... ... Conversely, if $$gcd(x,m) = d$$ and $$d \neq 1$$, then $$m = rd$$ and $$x = sd$$, where $$r$$ and $$s$$ are integers with $$m \gt r, s \gt 1$$. ... ... "I cannot see exactly why/how $$m \gt r, s \gt 1$$ ... can someone help me to prove that $$m \gt r $$ and $$s \gt 1$$ ... ... ?
Help will be appreciated ...
Peter
I am currently focused on Ch. 8: Integral Domains and Fields ...
I need some help with an aspect of the proof of Theorem 8.6 ...
Theorem 8.6 and its proof read as follows:
View attachment 6434
In the above text, Anderson and Feil write the following:
" ... ... Conversely, if $$gcd(x,m) = d$$ and $$d \neq 1$$, then $$m = rd$$ and $$x = sd$$, where $$r$$ and $$s$$ are integers with $$m \gt r, s \gt 1$$. ... ... "I cannot see exactly why/how $$m \gt r, s \gt 1$$ ... can someone help me to prove that $$m \gt r $$ and $$s \gt 1$$ ... ... ?
Help will be appreciated ...
Peter