Results 11 to 20 of about 93,087 (303)
Plan permutation symmetries as a source of inefficiency in planning [PDF]
, 2003 This paper briefly reviews sources of symmetry in planning and highlights one source that has not previously been tackled:plan permutation symmetry.
Long, D., Fox, M.
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Constraining spacetime nonmetricity with neutron spin rotation in liquid 4He
Physics Letters B, 2017 General spacetime nonmetricity coupled to neutrons is studied. In this context, it is shown that certain nonmetricity components can generate a rotation of the neutron's spin. Available data on this effect obtained from slow-neutron propagation in liquid
Ralf Lehnert +3 more
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IN THE ISSUES OF MATHEMATICAL MODELLING LOGISTICS PROCESSES [PDF]
Acta Logistica, 2019 Mathematical modelling came to logistics from economics. Economic models have been used for quite some time, but the results obtained force us to develop new branches of the theory.
Alexander Lozhkin
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Symmetries in planning problems [PDF]
, 2003 Symmetries arise in planning in a variety of ways. This paper describes the ways that symmetry aises most naturally in planning problems and reviews the approaches that have been applied to exploitation of symmetry in order to reduce search for plans. It
Fox, Maria, Long, Derek
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Extended Hamilton–Jacobi Theory, Symmetries and Integrability by Quadratures
Mathematics, 2021 In this paper, we study the extended Hamilton–Jacobi Theory in the context of dynamical systems with symmetries. Given an action of a Lie group G on a manifold M and a G-invariant vector field X on M, we construct complete solutions of the Hamilton ...
Sergio Grillo +2 more
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Noether symmetries and integrability in time-dependent Hamiltonian mechanics [PDF]
Theoretical and Applied Mechanics, 2016 We consider Noether symmetries within Hamiltonian setting as transformations that preserve Poincaré-Cartan form, i.e., as symmetries of characteristic line bundles of nondegenerate 1-forms.
Jovanović Božidar
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ON THE SYMMETRIES OF INTEGRABILITY [PDF]
International Journal of Modern Physics B, 1992 We show that the Yang-Baxter equations for two-dimensional models admit as a group of symmetry the infinite discrete group [Formula: see text]. The existence of this symmetry explains the presence of a spectral parameter in the solutions of the equations.
Bellon, M., Maillard, J.-M., Viallet, C.
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Representations of sl(2,?) in category O and master symmetries [PDF]
, 2015 We show that the indecomposable sl(2,?)-modules in the Bernstein-Gelfand-Gelfand category O naturally arise for homogeneous integrable nonlinear evolution systems. We then develop a new approach called the O scheme to construct master symmetries for such
J. P. Wang, Wang, Jing Ping
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Symmetry, Symmetry Breaking and Topology [PDF]
Symmetry, 2010 The ground state of a system with symmetry can be described by a group G. This symmetry group G can be discrete or continuous. Thus for a crystal G is a finite group while for the vacuum state of a grand unified theory G is a continuous Lie group. The ground state symmetry described by G can change spontaneously from G to one of its subgroups H as the ...
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Synthese, 2019 AbstractWe advocate an account of dualities between physical theories: the basic idea is that dual theories are isomorphic representations of a common core. We defend and illustrate this account, which we call a Schema, in relation to symmetries. Overall, the account meshes well with standard treatments of symmetries.
Sebastian De Haro, Jeremy Butterfield
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