This group gathers theorems about rings, ideals and modules, the algebraic structures that generalize the integers and the polynomials by allowing both addition and multiplication. It covers commutative algebra, where ideals, Noetherian rings and prime and maximal ideals are the main tools, and noncommutative ring theory, where simple and semisimple rings and their modules are classified. A theorem belongs here when its cited article places it in ring theory, commutative algebra or the study of ideals. Results about fields and Galois theory, groups or matrices are grouped elsewhere under Algebra.
All Ring Theory and Commutative Algebra
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Wedderburn's Little Theorem (Wikipedia)
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Wedderburn's little theorem states that every finite division ring is a field; thus, every finite domain is a field.
View the Source Wedderburn-Artin theorem (Wikipedia)
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to the product of finitely many ni-by-ni matrix rings over division rings Di, for some integers ni, both of which are
View the Source Hilbert's Basis Theorem (Wikipedia)
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of the interpretation of algebraic geometry in terms of commutative algebra. In particular, the basis theorem implies that
View the Source Hilbert's Nullstellensatz (Wikipedia)
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is a theorem that establishes a fundamental relationship between geometry and algebra. It was proven by David Hilbert in his second
View the Source Krull's Theorem (Wikipedia)
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In mathematics, and more specifically in ring theory, Krull's theorem, named after Wolfgang Krull
View the Source Nakayama's Lemma (Wikipedia)
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In mathematics, more specifically abstract algebra and commutative algebra, Nakayama's lemma - also known as the Krull-Azumaya
View the Source Noether normalization lemma, Wikipedia
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to as a theorem rather than a lemma) is a result of commutative algebra, introduced by Emmy Noether in 1926. It states
View the Source Skolem-Noether theorem, Wikipedia
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In ring theory, a branch of mathematics, the Skolem-Noether
View the Source Hilbert's syzygy theorem (Wikipedia)
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is the starting point of the use of homological methods in commutative algebra and algebraic geometry.
View the Source Krull's principal ideal theorem (Wikipedia)
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In commutative algebra, Krull's principal ideal theorem, named after
View the Source Artin-Rees Lemma (Wikipedia)
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Artin-Rees lemma is a basic result about modules over a Noetherian ring, along with results such as the Hilbert basis
View the Source Krull-Akizuki theorem (Wikipedia)
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In commutative algebra, the Krull-Akizuki theorem states the following:
View the Source Going up and going down (Wikipedia)
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In commutative algebra, a branch of mathematics, going up and going
View the Source Jacobson density theorem (Wikipedia)
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In mathematics, more specifically non-commutative ring theory, modern algebra, and module theory, the Jacobson
View the Source Primary decomposition (Wikipedia)
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mathematics, the Lasker-Noether theorem states that every Noetherian ring is a Lasker ring, which means that every ideal
View the Source Amitsur-Levitzki theorem (Wikipedia)
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by Amitsur and Levitsky (1950). In particular matrix rings are polynomial identity rings such that the smallest
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