Results 71 to 80 of about 2,499,965 (359)

Metatimes, random measures and cylindrical random variables

open access: yesModern Stochastics: Theory and Applications, 2021
Metatimes constitute an extension of time-change to general measurable spaces, defined as mappings between two σ-algebras. Equipping the image σ-algebra of a metatime with a measure and defining the composition measure given by the metatime on the domain
Fred Espen Benth, Iben Cathrine Simonsen
doaj   +1 more source

A seminorm with square property on a Banach algebra is submultiplicative

open access: yes, 1993
The result stated in the title is proved in a Banach algebra and is used to discuss (i) commutativity criteria in normed algebras, (ii) uniqueness of the uniform norm in uniform Banach algebras, and (iii) existence of continuous multiplicative linear ...
S. J. Bhatt
semanticscholar   +1 more source

Data‐driven forecasting of ship motions in waves using machine learning and dynamic mode decomposition

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
Summary Data‐driven forecasting of ship motions in waves is investigated through feedforward and recurrent neural networks as well as dynamic mode decomposition. The goal is to predict future ship motion variables based on past data collected on the field, using equation‐free approaches.
Matteo Diez   +2 more
wiley   +1 more source

Construction of an algebra corresponding to a statistical model of the square ladder (square lattice with two lines)

open access: yesNuclear Physics B, 2022
In this paper we define infinite-dimensional algebra and its representation, whose basis is naturally identified with semi-infinite configurations of the square ladder model (square lattice with two lines). All these lead to representation of N=2 algebra.
Valerii Sopin
doaj  

New many-parameter Fourier–Clifford transforms

open access: yesЦифровые модели и решения, 2023
The article shows how ordinary complex-valued Fourier transforms are extended to Cliffordean-valued many-parameter Fourier transforms (MPFCTs). Each MPFCT depends on finite set of independent parameters (angles), which could be changed independently one ...
V. G. Labunets   +2 more
doaj   +1 more source

It Matters Where the Heavy Atom Is Placed: Optimizing the Spin–Orbital Coupling in Multiresonant TADF (MR‐TADF) Emitters and Its Impact on OLED Performance

open access: yesAdvanced Functional Materials, EarlyView.
The TOC showcases the chemical structure of the emitter tCzBT2B as an “MVP athlete” in a stadium surrounded by. spotlights and cheering fans celebrating its impressive performance in organic light‐emitting diodes (OLEDs). The stats for this emitter and its device are detailed below.
Dongyang Chen   +7 more
wiley   +1 more source

Quadratic equations in Swedish textbooks for upper-secondary school

open access: yesLUMAT, 2021
This paper analyzes the content and tasks involving quadratic equations in eight mathematics textbooks published during the period 2000-2012 at the upper-secondary level in Sweden.
Wang Wei Sönnerhed
doaj   +1 more source

Enhancing the Photocatalytic Performance of Carbon Nitrides Through Controlled Local Structure Modification

open access: yesAdvanced Functional Materials, EarlyView.
This work utilizes poly(heptazine imides) as a model system to demonstrate how fine‐tuning the crystal structure influences the photocatalytic properties of layered carbon nitrides in the hydrogen evolution reaction. In particular, the nature of rotational defects and the hydration shell of cations are key contributors to enhanced hydrogen evolution ...
Diana V. Piankova   +11 more
wiley   +1 more source

Bimultiplications and Annihilators of Crossed Modules in Associative Algebras

open access: yesJournal of New Theory, 2021
In this paper, we present a generalization of the concept of the bimultiplication algebra by defining the bimultiplication of crossed modules in associative algebras.
Ummahan Ege Arslan, Serdar Hürmetli
doaj   +1 more source

Sums of squares in octonion algebras [PDF]

open access: yesProceedings of the American Mathematical Society, 2005
Sums of squares in composition algebras are investigated using methods from the theory of quadratic forms. For any integerm≥1m\geq 1octonion algebras of level2m2^mand of level2m+12^m+1are constructed.
openaire   +2 more sources

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