Results 61 to 70 of about 3,573,561 (343)
Quadratic systems with a symmetrical solution
Electronic Journal of Qualitative Theory of Differential Equations, 2018 In this paper we study the existence and uniqueness of limit cycles for so-called quadratic systems with a symmetrical solution: \begin{equation*} \begin{split} \frac{dx(t)}{dt}& = P_2(x,y) \equiv a_{00}+a_{10}x+a_{01}y+a_{20}x^2+a_{11}xy+a_{02}y^2 ...
Andre Zegeling, Robert Kooij
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Impact of Anomalous Active Regions on the Large-scale Magnetic Field of the Sun
The Astrophysical Journal, 2023 One of the major sources of perturbation in the solar cycle amplitude is believed to be the emergence of anomalous active regions that do not obey Hale’s polarity law and Joy’s law of tilt angles.
Shaonwita Pal +3 more
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The gamma-filtration and the Rost invariant
, 2010 Let X be the variety of Borel subgroups of a simple and strongly inner linear algebraic group G over a field k. We prove that the torsion part of the second quotient of Grothendieck's gamma-filtration on X is a cyclic group of order the Dynkin index of G.
Garibaldi, Skip, Zainoulline, Kirill
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Beyond Grinberg Equation in Cubic Planar Graphs
Journal of Applied Computer Science & Mathematics, 2019 In this paper, Grinberg equation related to the Hamiltonicity of cubic planar graphs is revisited using the cycle base description of the graph and the related Laplacian.
Cristian E. ONETE +1 more
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Jurnal Mercumatika: Jurnal Penelitian Matematika dan Pendidikan Matematika, 2020 This research was conducted based on the problems that occur in the field, namely the low self-confidence of students. The subjects of this study were students of class VII B SMP Negeri 3 Depok consisting of 32 students.
Muhammad Istiqlal, Curie Putri Hijrihani
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Parameter spaces for algebraic equivalence [PDF]
, 2016 A cycle is algebraically trivial if it can be exhibited as the difference of two fibers in a family of cycles parameterized by a smooth scheme. Over an algebraically closed field, it is a result of Weil that it suffices to consider families of cycles ...
Jeff Achter +2 more
semanticscholar +1 more source
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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Advanced Functional Materials, EarlyView.The TOC showcases the chemical structure of the emitter tCzBT2B as an “MVP athlete” in a stadium surrounded by. spotlights and cheering fans celebrating its impressive performance in organic light‐emitting diodes (OLEDs). The stats for this emitter and its device are detailed below.
Dongyang Chen +7 more
wiley +1 more source
Equivariant cobordism of schemes [PDF]
, 2010 We study the equivariant cobordism theory of schemes for action of linear algebraic groups. We compare the equivariant cobordism theory for the action of a linear algebraic groups with similar groups for the action of tori and deduce some consequences ...
Krishna, Amalendu
core
A Hopf algebra for counting cycles [PDF]
Discrete Mathematics, 2018 Simple cycles, also known as self-avoiding polygons, are cycles on graphs which are not allowed to visit any vertex more than once. We present an exact formula for enumerating the simple cycles of any length on any directed graph involving a sum over its induced subgraphs. This result stems from an Hopf algebra, which we construct explicitly, and which
Pierre-Louis Giscard +2 more
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