[代數] Primary component decomposition
Let R be a PID and M be a torsion R-module. Prove that M is the (possibly
infinite) direct sum of its p-primary components, as p runs over all primes
in R.
finite的情況看過證明,大致可以理解
infinite的情況就不知道怎麼證了
可否請板上強者們幫個忙?
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