Nonlinear Diffusion Equations and Curvature Conditions in Metric Measure Spaces

Released on by Luigi Ambrosio
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  • Nonlinear Diffusion Equations and Curvature Conditions in Metric Measure Spaces Book Detail

  • Author : Luigi Ambrosio
  • Release Date : 2019
  • Publisher :
  • Genre : Differential calculus
  • Pages : 121
  • ISBN 13 : 9781470455132
  • File Size : 55,55 MB
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Nonlinear Diffusion Equations and Curvature Conditions in Metric Measure Spaces by Luigi Ambrosio PDF Summary

Book Description: Aim of this paper is to provide new characterizations of the curvature dimension condition in the context of metric measure spaces (X,d,m). On the geometric side, our new approach takes into account suitable weighted action functionals which provide the natural modulus of K-convexity when one investigates the convexity properties of N-dimensional entropies. On the side of diffusion semigroups and evolution variational inequalities, our new approach uses the nonlinear diffusion semigroup induced by the N-dimensional entropy, in place of the heat flow. Under suitable assumptions (most notably the quadraticity of Cheeger's energy relative to the metric measure structure) both approaches are shown to be equivalent to the strong CD*(K,N) condition of Bacher-Sturm.

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