Results 31 to 40 of about 14,174 (225)

Markov processes with Lipschitz semigroups [PDF]

open access: yesTransactions of the American Mathematical Society, 1981
For f f a function on a metric space, let \[ Lip ⁡ f = sup x ≠ y | f ( x ) − f ( y ) | / d ( x
openaire   +1 more source

Continuous selections of Borel measures, positive operators and degenerate evolution problems

open access: yesJournal of Numerical Analysis and Approximation Theory, 2007
In this paper we continue the study of a sequence of positive linear operators which we have introduced in [9] and which are associated with a continuous selection of Borel measures on the unit interval.
Francesco Altomare, Vita Leonessa
doaj   +2 more sources

Weighted Nash Inequalities [PDF]

open access: yes, 2010
Nash or Sobolev inequalities are known to be equivalent to ultracontractive properties of Markov semigroups, hence to uniform bounds on their kernel densities.
Bakry, Dominique   +3 more
core   +6 more sources

Markov semigroups on C∗-bundles

open access: yesJournal of Functional Analysis, 1989
There is, for \(L^ 2\)-spaces, a one-to-one correspondence between symmetric (sub-)Markov semigroups of operators [cf. \textit{M. Silverstein}, Springer Lect. Notes Math. 516 (1976; Zbl 0331.60046) for the corresponding Markov processes the symmetry appears for the transition functions] and Dirichlet forms [\textit{A. Beurling} and \textit{J.
Davies, E.B, Rothaus, O.S
openaire   +2 more sources

Markov quantum semigroups admit covariant MarkovC*-dilations [PDF]

open access: yesCommunications in Mathematical Physics, 1986
Through a Daniell-Kolmogorov type construction, to any Markov quantum semigroup on a \(C^*\)-algebra there is associated a quantum stochastic process which is a dilation of the semigroup, and satisfies a covariance rule which implies the weak Markov property.
openaire   +3 more sources

Entropy Production for Quantum Markov Semigroups [PDF]

open access: yesCommunications in Mathematical Physics, 2015
An invariant state of a quantum Markov semigroup is an equilibrium state if it satisfies a quantum detailed balance condition. In this paper, we introduce a notion of entropy production for faithful normal invariant states of a quantum Markov semigroup on B(h) as a numerical index measuring "how much far" they are from equilibrium.
FAGNOLA, FRANCO, Rolando Rebolledo
openaire   +3 more sources

Classical dilations \`a la Hudson-Parthasarathy of Markov semigroups

open access: yes, 2007
We study the Classical Probability analogue of the dilations of a quantum dynamical semigroup defined in Quantum Probability via quantum stochastic differential equations.
Gregoratti, M.
core   +2 more sources

Complete positivity order and relative entropy decay

open access: yesForum of Mathematics, Sigma
We prove that for a GNS-symmetric quantum Markov semigroup, the complete modified logarithmic Sobolev constant is bounded by the inverse of its complete positivity mixing time.
Li Gao   +3 more
doaj   +1 more source

Periodic Solutions to Stochastic Reaction-Diffusion Neural Networks With S-Type Distributed Delays

open access: yesIEEE Access, 2019
In this paper, the existence and stability of mild periodic solutions to the stochastic reaction-diffusion neural networks (SRDNNs) with S-type distributed delays are studied.
Qi Yao, Yangfan Wang, Linshan Wang
doaj   +1 more source

On the relationship between a quantum Markov semigroup and its representation via linear stochastic Schroedinger equations

open access: yes, 2014
A quantum Markov semigroup can be represented via classical diffusion processes solving a stochastic Schr\"odinger equation. In this paper we first prove that a quantum Markov semigroup is irreducible if and only if classical diffusion processes are ...
Fagnola, Franco, Mora, Carlos
core   +1 more source

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