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Principal indecomposable module : ウィキペディア英語版 | Principal indecomposable module In mathematics, especially in the area of abstract algebra known as module theory, a principal indecomposable module has many important relations to the study of a ring's modules, especially its simple modules, projective modules, and indecomposable modules. == Definition ==
A (left) principal indecomposable module of a ring ''R'' is a (left) submodule of ''R'' that is a direct summand of ''R'' and is an indecomposable module. Alternatively, it is an indecomposable, projective, cyclic module. Principal indecomposable modules are also called PIMs for short.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Principal indecomposable module」の詳細全文を読む
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