Results 31 to 40 of about 4,252 (168)
Smoothness in Binomial Edge Ideals
Mathematics, 2016 In this paper we study some geometric properties of the algebraic set associated to the binomial edge ideal of a graph. We study the singularity and smoothness of the algebraic set associated to the binomial edge ideal of a graph. Some of these algebraic
Hamid Damadi, Farhad Rahmati
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Algebraic cycles and algebraic K-theory
Journal of Algebra, 1979 ‘l’he purpose of this paper is to develop higher algebraic K-theory into a tool for understanding algebraic cycles on a variety. Bloch made the first step: he showed that the group of zero-cycles modulo rational equivalence is Ha(X, L%$) on a nonsingular surface X. Gersten reduced the general statement that H”(X, .%‘J is A”(X), the group of codimension
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Algebras with cycle-finite Galois coverings [PDF]
Transactions of the American Mathematical Society, 2011 It is proved that every finite-dimensional algebra over an algebraically closed field which admits a cycle-finite Galois covering with torsion-free Galois group is tame, and a description of the indecomposable finite-dimensional modules over these algebras is given.
de la Peña, José A. +1 more
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The Cubic Polynomial Differential Systems with two Circles as Algebraic Limit Cycles
Advanced Nonlinear Studies, 2018 In this paper we characterize all cubic polynomial differential systems in the plane having two circles as invariant algebraic limit cycles.
Giné Jaume, Llibre Jaume, Valls Claudia
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NORMAL FUNCTIONS FOR ALGEBRAICALLY TRIVIAL CYCLES ARE ALGEBRAIC FOR ARITHMETIC REASONS
Forum of Mathematics, Sigma, 2019 For families of smooth complex projective varieties, we show that normal functions arising from algebraically trivial cycle classes are algebraic and defined over the field of definition of the family.
JEFFREY D. ACHTER +2 more
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Descent of algebraic cycles [PDF]
Homology, Homotopy and Applications, 2017 We characterize universally generalizing morphisms which satisfy descent of algebraic cycles integrally as those universally generalizing morphisms which are surjective with generically reduced fibres. In doing so, we introduce a naive pull-back of cycles for arbitrary morphisms between noetherian schemes, which generalizes the classical pull-back for ...
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ÉTALE MOTIVIC COHOMOLOGY AND ALGEBRAIC CYCLES [PDF]
Journal of the Institute of Mathematics of Jussieu, 2014 We consider étale motivic or Lichtenbaum cohomology and its relation to algebraic cycles. We give an geometric interpretation of Lichtenbaum cohomology and use it to show that the usual integral cycle maps extend to maps on integral Lichtenbaum cohomology.
Rosenschon, Andreas, Srinivas, V.
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Periods of complete intersection algebraic cycles [PDF]
manuscripta mathematica, 2021 Final ...
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Polynomial differential systems with explicit non-algebraic limit cycles
Electronic Journal of Differential Equations, 2012 Up to now all the examples of polynomial differential systems for which non-algebraic limit cycles are known explicitly have degree at most 5. Here we show that already there are polynomial differential systems of degree at least exhibiting explicit ...
Rebiha Benterki, Jaume Llibre
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Limit Cycles and Invariant Curves in a Class of Switching Systems with Degree Four
Journal of Function Spaces, 2018 In this paper, a class of switching systems which have an invariant conic x2+cy2=1,c∈R, is investigated. Half attracting invariant conic x2+cy2=1,c∈R, is found in switching systems.
Xinli Li, Huijie Yang, Binghong Wang
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