Results 71 to 80 of about 7,283,719 (303)
A cycle structure theorem for hamiltonian graphs
Journal of Combinatorial Theory, Series B, 1988 An n-vertex graph is called pancyclic if it contains a cycle of length \(\ell\) for every \(\ell\) such that \(3\leq \ell \leq n.\) We establish the following result: Let C be a hamiltonian cycle in an n- vertex graph G. Suppose C contains consecutive vertices x,y such that \(d(x)+d(y)\geq n\).
Edward F. Schmeichel, S. Louis Hakimi
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Numerical analysis of structure preserving Nyström methods for Hamiltonian systems [PDF]
, 2005 Energy conservation is an essential property of conservative mechanical systems that should be carried over to the numerical solution. Betsch and Steinmann proposed recently perturbed potentials to achieve energy conservation in the time integration of N-
Pfeiffer, Andreas, Arnold, Martin
core
Bi-Hamiltonian structure of the Kermack-McKendrick model for epidemics [PDF]
, 1990 The dynamical system proposed by Kermack and McKendrick to model the spread of epidemics is shown to admit bi-Hamiltonian structure without any restrictions on the rate constants.
Nutku, Y., Y Nutku
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Emergent Spin Supersolids in Frustrated Quantum Materials
Advanced Materials, EarlyView.This review highlights developments in the study of spin super‐solids in frustrated quantum materials. Advanced experimental characterizations and computational studies enable a comprehensive understanding of the driving mechanisms of spin super‐solidity in various layered transition‐metal compounds, bridging materials, experiments, and theory aspects.
Yixuan Huang +2 more
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Passivity-based control for DC-microgrids with constant power terminals in island mode operation
Revista Facultad de Ingeniería Universidad de Antioquia, 2018 This paper presents a Passivity Based Control (PBC) for a dc microgrid. PBC is commonly used in electrical systems such as power electronics converters and electric machines, but there are few applications in microgrids operating in island mode.
Duberney Murillo-Yarce +2 more
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Hamiltonian Chains in Hypergraphs [PDF]
Discrete Mathematics & Theoretical Computer Science, 2005 Hamiltionian chain is a generalisation of hamiltonian cycles for hypergraphs. Among the several possible ways of generalisations this is probably the most strong one, it requires the strongest structure.
Gyula Y. Katona
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A Hamiltonian and geometric formulation of general Vlasov-Maxwell-type models
Fundamental Plasma Physics, 2023 Three geometric formulations of the Hamiltonian structure of the macroscopic Maxwell equations are given: one in terms of the double de Rham complex, one in terms of L2 duality, and one utilizing an abstract notion of duality.
William Barham +2 more
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The Forcing Domination Number of Hamiltonian Cubic Graphs [PDF]
, 2009 The authors presented a sequence of Hamiltonian cubic graphs whose domination numbers are sharp and in this paper we study forcing domination number for those ...
H. Abdollahzadeh Ahangar +3 more
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Trions as Fundamental Species in Chemically Doped Polymer Semiconductors
Advanced Materials, EarlyView.This work shows that exciton–charge carrier coupling in doped polymer semiconductors gives rise to multi‐particle states, including trions—quasiparticles consisting of two holes and one electron under p‐doping—and bound exciton‐hole pairs, as identified through spectroscopic and theoretical analysis.
Hongmo Li +23 more
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Advanced Materials, EarlyView.Co1/3TaS2${\rm Co}_{1/3}{\rm TaS}_{2}$ hosts a triple‐Q noncoplanar antiferromagnetic state with coexisting Z3${\rm Z}_3$ electronic nematicity. We report rotational hysteresis observed in both magnetoresistance and magnetic torque, revealing strongly pinned in‐plane weak ferromagnetic moments in the triple‐Q phase and the magnetism‐driven nature of ...
Joonyoung Choi +5 more
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