Results 11 to 20 of about 73,247 (194)
q-deformation of Witt-Burnside rings [PDF]
Mathematische Zeitschrift, 2007 Some revision was ...
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The basic geometry of Witt vectors, I: The affine case [PDF]
, 2015 We give a concrete description of the category of etale algebras over the ring of Witt vectors of a given finite length with entries in an arbitrary ring.
Borger, James
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Annihilating polynomials for quadratic forms
International Journal of Mathematics and Mathematical Sciences, 2001 This is a short survey of the main known results concerning annihilating polynomials for the Witt ring of quadratic forms over a field.
David W. Lewis
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BASES FOR QUANTUM ALGEBRAS AND SKEW POINCARÉ-BIRKHOFF-WITT EXTENSIONS
Momento, 2017 Considering quantum algebras and skew Poincaré-Birkhoff-Witt (PBW for short) extensions defined by a ring and a set of variables with relations between them, we are interesting in finding a criteria and some algorithms which allow us to decide whether an
Armando Reyes, Héctor Suárez
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Computation of the Grothendieck-Witt ring of nonsingular Hermitian forms with positioning map [PDF]
, 2005 The generalized Grothendieck-Witt ring of nonsingular Hermitian forms with positioning map is the cartesian product of the ordinary Grothendieck-Witt ring of nonsingular Hermitian forms and a map ring.
Ju, Xian Meng
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Witt group of Hermitian forms over a noncommutative discrete valuation ring
International Journal of Mathematics and Mathematical Sciences, 2005 We investigate Hermitian forms on finitely generated torsion modules over a noncommutative discrete valuation ring. We also give some results for lattices, which still are satisfied even if the base ring is not commutative. Moreover, for a noncommutative
L. Oukhtite
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Small Extensions of Witt Rings [PDF]
, 1999 We consider certain Witt ring extensions S of a noetherian Witt ring R obtained by adding one new generator. The conditions on the new generator are those known to hold when R is the Witt ring of a Field F, S is the Witt ring of a Field K and K/F is an ...
Fitzgerald, Robert W.
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Proceedings of the American Mathematical Society, 1997 An abstract Witt ring \((R,G,q)\) is said to be \(k\)-regular if for all \(x \in G\), \(x \neq 1\), the value sets of binary forms satisfy \(|D(1,-x)|= k\). The existence of \(k\)-regular Witt rings is known only for \(k = 2, g/2, g\), where \(g = |G|\). A Witt ring with \(2 < k < g/2\) is said to be exceptional.
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Propiedad de Armendariz para las extensiones PBW torcidas y su anillo clásico de cocientes
Revista Integración, 2016 Consideramos un primer acercamiento a la noción de anillo de Armendariz para una extensión torcida de Poincaré-Birkho-Witt (PBW), y su anillo clásico de cocientes.
Armando Reyes, Héctor Suárez
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On the Witt vector Frobenius [PDF]
, 2014 We study the kernel and cokernel of the Frobenius map on the $p$-typical Witt vectors of a commutative ring, not necessarily of characteristic $p$. We give some equivalent conditions to surjectivity of the Frobenus map on both finite and infinite length ...
Davis, Christopher, Kedlaya, Kiran S.
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