I have this kind of exercise in which I need help: Let R be integral domain. Assume that there is an element , so that if then or with every . Show that is irreducible. (U(R) = the group of units of R) Any help would be great.
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Originally Posted by Ester I have this kind of exercise in which I need help: Let R be integral domain. Assume that there is an element , so that if then or with every . Show that is irreducible. (U(R) = the group of units of R) Any help would be great. Suppose . WLTG suppose . End now the proof. Tonio
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