Results 41 to 50 of about 276 (144)

On the Riesz decomposition property and the interpolation property of stopping times

open access: yes, 2013
The author is fixing a technical issue in the paper. The paper will be combined with 1311.6389, along with several other new applications for a new working ...
openaire   +2 more sources

Jensen's inequality for partial traces in von Neumann algebras

open access: yesBulletin of the London Mathematical Society, Volume 58, Issue 4, April 2026.
Abstract Motivated by a recent result on finite‐dimensional Hilbert spaces, we prove Jensen's inequality for partial traces in semifinite von Neumann algebras. We also prove a similar inequality in the framework of general (non‐tracial) von Neumann algebras.
Mizanur Rahaman, Lyudmila Turowska
wiley   +1 more source

Orderamarts: A class of asymptotic martingales

open access: yes, 1979
We extend the notion of real-valued asymptotic martingales to the Banach lattice valued case. Unlike the other extensions, the notion of “orderamart” preserves the lattice property of real amarts.
Ghoussoub, N
core   +1 more source

Generalized quasi‐geostrophic equation in critical Lorentz–Besov spaces, based on maximal regularity

open access: yesMathematische Nachrichten, Volume 299, Issue 3, Page 637-660, March 2026.
Abstract We consider the quasi‐geostrophic equation with its principal part (−Δ)α${(-\mathrm{\Delta})^{\alpha}}$ for α>1/2$\alpha >1/2$ in Rn$\mathbb {R}^n$ with n≥2$n \ge 2$. We show that for every initial data θ0∈Ḃr,q1−2α+nr$\theta _0 \in \dot{B}^{1-2\alpha + \frac{n}{r}}_{r, q}$ with 1
Hideo Kozono   +2 more
wiley   +1 more source

Sure wins, separating probabilities and the representation of linear functionals

open access: yes, 2009
We discuss conditions under which a convex cone K ⊂ RΩ admits a finitely additive probability m such that supk∈K m(k) ≤ 0. Based on these, we characterize those linear functionals that are representable as finitely additive expectations.
Cassese, Gianluca
core   +1 more source

Small triangles

open access: yesJournal of the London Mathematical Society, Volume 113, Issue 3, March 2026.
Abstract Heilbronn's triangle problem is a classical question in discrete geometry. It asks to determine the smallest number Δ=Δ(N)$\Delta = \Delta (N)$ for which every collection in N$N$ points in the unit square spans a triangle with area at most Δ$\Delta$.
Dmitrii Zakharov
wiley   +1 more source

A Classification of Simple Limits of Splitting Interval Algebras

open access: yes, 1997
LetAbe a unital simple limit of finite direct sums of sub-homogeneous interval algebras of a certain type (cf. Definition 1.1). It is proved thatAcan be classified by the scaled ordered groupK0(A), the simplexT(A), and the canonical pairing between them.
Jiang, Xinhui, Su, Hongbing
core   +1 more source

A Different Approach to Endpoint Weak-type Estimates for Calder̟n-Zygmund Operators

open access: yes, 2020
The aim of this thesis is to investigate weak-type inequalities for linear and multilinear Calderón-Zygmund operators in Euclidean and weighted settings using the Calderón- Zygmund decomposition and ideas inspired by Nazarov, Treil, and Volberg.
Stockdale, Cody B.
core   +2 more sources

The fractional Lipschitz caloric capacity of Cantor sets

open access: yesJournal of the London Mathematical Society, Volume 113, Issue 3, March 2026.
Abstract We characterize the s$s$‐parabolic Lipschitz caloric capacity of corner‐like s$s$‐parabolic Cantor sets in Rn+1$\mathbb {R}^{n+1}$ for 1/2
Joan Hernández
wiley   +1 more source

3D steerable wavelets and monogenic analysis for bioimaging [PDF]

open access: yes, 2020
In this paper we introduce a 3D wavelet frame that has the key property of steerability. The proposed wavelet frame relies on the combination of a 3D isotropic wavelet transform with the 3D Riesz operator which brings steerability to the pyramid.
Michael Unser, Nicolas Chenouard
core  

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