enflame
发表于 2025-3-23 10:27:59
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LIKEN
发表于 2025-3-23 16:43:58
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欢呼
发表于 2025-3-23 18:20:10
Book 2008and differential algebra, commutative algebra, ring theory, and algebraic geometry. The book is self-contained; it requires no prerequisites other than the knowledge of basic algebraic concepts and a mathematical maturity of an advanced undergraduate..
泥瓦匠
发表于 2025-3-24 00:29:10
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聋子
发表于 2025-3-24 04:30:55
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有法律效应
发表于 2025-3-24 10:06:42
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ensemble
发表于 2025-3-24 11:30:57
Difference Kernels over Partial Difference Fields. Difference Valuation Rings,
与野兽博斗者
发表于 2025-3-24 16:09:37
Basic Concepts of Difference Algebra, ring homomorphism is unitary (maps unity onto unity), every subring of a ring contains the unity of the ring. Unless otherwise indicated, by the module over a ring . we mean a left .-module. Every module over a ring is unitary and every algebra over a commutative ring is also unitary.
厌恶
发表于 2025-3-24 19:58:19
Systems of Algebraic Difference Equations,inary case in Section 4.5. The whole section, as well as Sections 7.2 and 7.4 – 7.6, is based on the results of R. Cohn. Some of them were obtained in , but the main part of the theory first appeared in .
NEEDY
发表于 2025-3-24 23:57:39
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