Results 51 to 60 of about 276 (106)
On Landau-Kato inequalities via semigroup orbits
, 2023 Let $\omega>0$. Given a strongly continuous semigroup $\{e^{tA}\}$ on a Banach space and an element $f\in\mathbf{D}(A^2)$ satisfying the exponential orbital estimates $$\|e^{tA}f\|\leq e^{-\omega t}\|f\| \quad\text{and}\quad \|e^{tA}A^2f\|\leq e^{-\omega
Lian, Yanlu, Xue, Fei, Huang, Yi C.
core
Self-Organisation of Prediction Models. [PDF]
Entropy (Basel), 2023 Feistel R.
europepmc +1 more source
Harnack inequality and no-arbitrage bounds for self-financing portfolios
We give a direct proof of the Harnack inequality for a class of Kolmogorov operators associated with a linear SDE and we find the explicit expression of the optimal Harnack constant.
Polidoro, Sergio +2 more
core
The TeV Cosmic-Ray Bump: A Message from the Epsilon Indi or Epsilon Eridani Star? [PDF]
Astrophys J, 2021 Malkov MA, Moskalenko IV.
europepmc +1 more source
Non-null-controllability of the fractional heat equation and of the Kolmogorov equation
, 2020 International audienceWe prove in this article that the Kolmogorov-type equation $(\partial_t -\partial_v^2 + v^2\partial_x)f(t,x,v) = \mathbf 1_\omega u(t,x,v)$ for $(t,x)\in \mathbb T\times \Omega_v$ with $\Omega_v = \mathbb R$ or $(-1,1)$ is not null ...
Koenig, Armand
core +1 more source
A Kolmogorov inequality for weighted U-statistics
In this paper a Kolmogorov probability inequality for weighted U-statistics based on Bernoulli kernels is presented. This inequality which extends the results of [Turner, D.W., Young, D.M., Seaman, J.W., 1995.
Mavrikiou, Petroula M.
core
On an Inequality of the Kolmogorov Type for a Second-Order Differential Expression
, 1993 In this paper we discuss an integro-differential inequality formed from the square of a second-order differential expression. A connection between the existence of the inequality and the Titchmarsh-Weyl m-function is established and it is shown that the ...
Beynon, Malcolm James +2 more
core +1 more source
Landau type theorem for Orlicz spaces
, 1991 In this paper the authors discuss Landau's theorem presenting an inverse of the classical Hölder-type inequality for sequence and function spaces.The results given are for Orlicz spaces and their generalizations, i.e., those spaces of Orlicz type that ...
Maligranda, Lech, +3 more
core +1 more source
On an inequality of Kolmogorov type for a second-order difference expression
In this paper we discuss an inequality of Kolmogorov type for the square of a second-order formally symmetric difference expression in the limit-point case.
Evans, WD, Delil, A
core
Monotonicity Method Applied to the Complex Ginzburg–Landau and Related Equations
, 2002 Global existence of unique strong solutions is established for the complex Ginzburg–Landau equation ∂tu−(λ+iα)Δu+(κ+iβ)|u|p−1u−γu=0, where λ>0,κ>0,α,β,γ∈R,p≥1, and κ−1|β|≤2p/(p−1). The key is a new inequality in monotonicity methods.
Okazawa, Noboru, Yokota, Tomomi
core +1 more source