Results 11 to 20 of about 237,552 (328)
Point counting for foliations over number fields
Forum of Mathematics, Pi, 2022 Let${\mathbb M}$ be an affine variety equipped with a foliation, both defined over a number field ${\mathbb K}$. For an algebraic $V\subset {\mathbb M}$ over ${\mathbb K}$, write $\delta _{V}$ for the maximum of the degree and log-height of V.
Gal Binyamini
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Piecewise algebraic varieties*
Progress in Natural Science, 2004 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wang, Renhong, Zhu, Chungang
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Connected algebraic subgroups of groups of birational transformations not contained in a maximal one
Comptes Rendus. Mathématique, 2023 We prove that for each $n\ge 2$, there exist a ruled variety $X$ of dimension $n$ and a connected algebraic subgroup of $\mathrm{Bir}(X)$ which is not contained in a maximal one.
Fong, Pascal, Zikas, Sokratis
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Efficient calculation of all steady states in large-scale overlapping generations models [PDF]
Mathematics and Modeling in Finance, 2023 In this paper, we address the problem of analyzing and computing all steady states of an overlapping generation (OLG) model with production and many generations.
Monireh Riahi +3 more
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Homotopical Algebraic Context over Differential Operators [PDF]
, 2017 Building on previous works, we show that the category of non-negatively graded chain complexes of $D_X$-modules -- where $X$ is a smooth affine algebraic variety over an algebraically closed field of characteristic zero -- fits into a homotopical ...
Di Brino, Gennaro +2 more
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Jordan Algebras Over Algebraic Varieties [PDF]
Communications in Algebra, 2010 We construct Jordan algebras over a locally ringed space using generalizations of the Tits process and the first Tits construction by Achhammer. Some general results on the structure of these algebras are obtained. Examples of Albert algebras over a Brauer-Severi variety with associated central simple algebra of degree 3 are given.
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On singularities of real algebraic sets and applications to kinematics
Open Mathematics, 2020 We address the question of identifying non-smooth points in Vℝ(I){{\bf{V}}}_{{\mathbb{R}}}(I) the real part of an affine algebraic variety. Two simple algebraic criteria will be formulated and proven.
Diesse Marc
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Projective varieties have countably many real forms
Comptes Rendus. Mathématique, 2023 In this note, we check that a complex projective algebraic variety has (at most) countably many real forms. We more generally prove it when the field of reals is replaced with a field that has only countably many finite extensions up to isomorphism.
Labinet, Timothée L.
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Cylindrical Algebraic Sub-Decompositions [PDF]
, 2014 Cylindrical algebraic decompositions (CADs) are a key tool in real algebraic geometry, used primarily for eliminating quantifiers over the reals and studying semi-algebraic sets.
Bradford, R. J. +3 more
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Logical Methods in Computer Science, 2020 We introduce a class of algebras that can be used as recognisers for regular tree languages. We show that it is the only such class that forms a pseudo-variety and we prove the existence of syntactic algebras.
Achim Blumensath
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