Ganzer Ringhomomorphismus/Injektiv/Surjektiv/Fakt

Lying over für ganze Ringerweiterungen

Es sei

\varphi \colon R\longrightarrow S

$\varphi ^{*}\colon \operatorname {Spek} {\left(S\right)}\longrightarrow \operatorname {Spek} {\left(R\right)}$

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