Results 51 to 60 of about 125 (119)

The Uncertainty Principle and Hypoelliptic Operators

open access: yesPublications of the Research Institute for Mathematical Sciences, 1987
Let P be a differential operator of second order with coefficients in \(C^{\infty}(R^ n)\), that is, \[ (1)\quad P=\sum_{j,k}a_{jk}(x)D_ jD_ k+\sum_{j}ib_ j(x)D_ j+c(x),\quad D_ j=-i\partial_{x_ j}. \] We assume that \[ (2)\quad a_{jk}\quad and\quad b_ j\quad are\quad real\quad valued,\quad \sum a_{jk}(x)\xi_ j\xi_ k\geq 0\quad for\quad any\quad (x,\xi)
openaire   +3 more sources

The Heat Asymptotics on Filtered Manifolds. [PDF]

open access: yesJ Geom Anal, 2020
Dave S, Haller S.
europepmc   +1 more source

Ornstein-Uhlenbeck semigroups in infinite dimension. [PDF]

open access: yesPhilos Trans A Math Phys Eng Sci, 2020
Lunardi A, Pallara D.
europepmc   +1 more source

Conceptual dynamical models for turbulence. [PDF]

open access: yesProc Natl Acad Sci U S A, 2014
Majda AJ, Lee Y.
europepmc   +1 more source

Chaos in Stochastic 2d Galerkin-Navier-Stokes. [PDF]

open access: yesCommun Math Phys
Bedrossian J, Punshon-Smith S.
europepmc   +1 more source

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