Results 81 to 90 of about 2,494,307 (343)

Current Tracking Adaptive Control of Brushless DC Motors

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
In this paper, the current tracking for Brushless Direct Current motors is approached considering uncertainty in the parameters of the motor's model. An adaptive control scheme to compensate electrical parameters uncertainty is proposed without requiring any knowledge of the mechanical parameters.
Fernanda Ramos‐García   +3 more
wiley   +1 more source

A proof of loop equations in 2d topological gravity

open access: yesJournal of High Energy Physics, 2021
We study multi-boundary correlators in 2d Witten-Kontsevich topological gravity. We present a proof of the loop equations obeyed by the correlators. While the loop equations were derived a long time ago, our proof is fully explicit in the presence of ...
Kazumi Okuyama, Kazuhiro Sakai
doaj   +1 more source

Mathematical Explanation beyond Explanatory Proof

open access: yesBritish Journal for the Philosophy of Science, 2020
Much recent work on mathematical explanation has presupposed that the phenomenon involves explanatory proofs in an essential way. I argue that this view, ‘proof chauvinism’, is false.
W. D’Alessandro
semanticscholar   +1 more source

An Adaptive Human Pilot Model With Reaction Time Delay for Enhanced Adaptive Control in Piloted Systems

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
This work introduces an adaptive human pilot model that captures pilot time‐delay effects in adaptive control systems. The model enables the prediction of pilot–controller interactions, facilitating safer integration and improved design of adaptive controllers for piloted applications.
Abdullah Habboush, Yildiray Yildiz
wiley   +1 more source

Scale and conformal invariance in 2d σ-models, with an application to $$\mathcal{N}$$ = 4 supersymmetry

open access: yesJournal of High Energy Physics
By adapting previously known arguments concerning Ricci flow and the c-theorem, we give a direct proof that in a two-dimensional sigma-model with compact target space, scale invariance implies conformal invariance in perturbation theory.
Georgios Papadopoulos, Edward Witten
doaj   +1 more source

On the continuity of the commutative limit of the 4d N=4 non-commutative super Yang–Mills theory

open access: yesNuclear Physics B, 2015
We study the commutative limit of the non-commutative maximally supersymmetric Yang–Mills theory in four dimensions (N=4 SYM), where non-commutativity is introduced in the two spacelike directions.
Masanori Hanada, Hidehiko Shimada
doaj   +1 more source

On the analogy between real reductive groups and Cartan motion groups. III: A proof of the Connes-Kasparov isomorphism

open access: yes, 2019
Alain Connes and Nigel Higson pointed out in the 1990s that the Connes-Kasparov "conjecture"' for the K-theory of reduced groupe $C^\ast$-algebras seemed, in the case of reductive Lie groups, to be a cohomological echo of a conjecture of George Mackey ...
Afgoustidis, Alexandre
core   +2 more sources

A Proof of the Generalized Second-Limit Theorem in the Theory of Probability [PDF]

open access: yesTransactions of the American Mathematical Society, 1931
A particular case is represented by dF(x) =f(x)dx, where f(x), summable and >0, is the "probability density" or "law of distribution" for x. The expression f -'.xsdF(x) is called the "sth moment" of the distribution, s taking values 0, 1, 2, The Second Limit-Theorem, which was the starting point of this paper, can be stated, with A.
Fréchet, Maurice, Shohat, J.
openaire   +1 more source

Enabling Digital Continuity in Virtual Manufacturing for Eco‐Efficiency Assessment of Lightweight Structures by Means of a Domain‐Specific Structural Mechanics Language: Requirements, Idea and Proof of Concept

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents a solver‐agnostic domain‐specific language (DSL) for computational structural mechanics that strengthens interoperability in virtual product development. Using a hierarchical data model, the DSL enables seamless exchange between diverse simulation tools and numerical methods.
Martin Rädel   +3 more
wiley   +1 more source

Definitional proof-irrelevance without K

open access: yesProc. ACM Program. Lang., 2019
Definitional equality—or conversion—for a type theory with a decidable type checking is the simplest tool to prove that two objects are the same, letting the system decide just using computation.
Gaëtan Gilbert   +3 more
semanticscholar   +1 more source

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