Last Updated:2025/12/05
Every projective module over a ring is a direct summand of some free module, which simplifies many homological arguments.
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Every projective module over a ring is a direct summand of some free module, which simplifies many homological arguments.
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環上の任意の射影加群はある自由加群の直和因子であり、多くのホモロジー論における議論を単純化する。