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Microwave conductivity of (AgI)1−x−(Ag2MoO4)x (x=0.25, 0.3, 0.35) glasses

✍ Scribed by Junichi Kawamura; Yasunao Oyama

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
330 KB
Volume
35
Category
Article
ISSN
0167-2738

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Triangular Derivations of k[X1, X2,
Triangular Derivations of k[X1, X2, X3, X4]
✍ Daniel Daigle; Gene Freudenburg 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 115 KB

It is shown that if k is a field of characteristic zero, then the kernel of any w x triangular k-derivation of k X , X , X , X is finitely generated as a k-algebra. This is obtained as a corollary of a more general result concerning triangular w x R-derivations of R X, Y, Z for certain rings R.