Results 21 to 30 of about 819,201 (281)
Magnetic helicity in magnetohydrodynamic turbulence with a mean magnetic field [PDF]
, 1995 A computational investigation of magnetic helicity of the fluctuatingmagnetic fieldHm in ideal and freely decaying three‐dimensional (3‐D) magnetohydrodynamics (MHD) in the presence of a uniform mean magnetic field is performed.
Bieber J. W. +5 more
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Thickness in topological transformation semigroups
International Journal of Mathematics and Mathematical Sciences, 1993 This article deals with thickness in topological transformation semigroups (τ-semigroups). Thickness is used to establish conditions guaranteeing an invariant mean on a function space defined on a τ-semigroup if there exists an invariant mean on its ...
Tyler Haynes
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Mean action and the Calabi invariant
, 2016 Given an area-preserving diffeomorphism of the closed unit disk which is a rotation near the boundary, one can naturally define an "action" function on the disk which agrees with the rotation number on the boundary.
Hutchings, Michael
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Optimal transport and dynamics of expanding circle maps acting on measures [PDF]
, 2013 Using optimal transport we study some dynamical properties of expanding circle maps acting on measures by push-forward. Using the definition of the tangent space to the space of measures introduced by Gigli, their derivative at the unique absolutely ...
Ambrosio, BENOÎT KLOECKNER, Krzyżewski
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Some Spaces of Double Sequences Obtained through Invariant Mean and Related Concepts
Abstract and Applied Analysis, 2013 We introduce some double sequences spaces involving the notions of invariant mean (or -mean) and -convergence for double sequences while the idea of -convergence for double sequences was introduced by Çakan et al.
S. A. Mohiuddine, Abdullah Alotaibi
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Invariant measures of the 2D Euler and Vlasov equations [PDF]
, 2010 We discuss invariant measures of partial differential equations such as the 2D Euler or Vlasov equations. For the 2D Euler equations, starting from the Liouville theorem, valid for N-dimensional approximations of the dynamics, we define the ...
Chavanis P H +17 more
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Invariant and Absolute Invariant Means of Double Sequences
Journal of Function Spaces and Applications, 2012 We examine some properties of the invariant mean, define the concepts of strong σ-convergence and absolute σ-convergence for double sequences, and determine the associated sublinear functionals.
Abdullah Alotaibi +2 more
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Black-Box Optimization Using Geodesics in Statistical Manifolds
Entropy, 2015 Information geometric optimization (IGO) is a general framework for stochastic optimization problems aiming at limiting the influence of arbitrary parametrization choices: the initial problem is transformed into the optimization of a smooth function on a
Jérémy Bensadon
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Non-normal parameter blowout bifurcation: an example in a truncated mean field dynamo model [PDF]
, 1997 We examine global dynamics and bifurcations occurring in a truncated model of a stellar mean field dynamo. This model has symmetry-forced invariant subspaces for the dynamics and we find examples of transient type I intermittency and blowout bifurcations
Ashwin, Peter +2 more
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Some results of Heron mean and Young’s inequalities
Journal of Inequalities and Applications, 2018 In this paper, we will show some improvements of Heron mean and the refinements of Young’s inequalities for operators and matrices with a different method based on others’ results.
Changsen Yang, Yonghui Ren
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