Results 61 to 70 of about 131 (118)

A Fractional‐Order Discrete‐Time FitzHugh–Nagumo Model With Multiple Time Delays

open access: yesComputational and Mathematical Methods, Volume 2026, Issue 1, 2026.
This paper introduces a novel fractional‐order (FO) discrete‐time FitzHugh–Nagumo model (FHNM) that incorporates multiple time delays to capture the combined effects of memory and transmission latencies inherent in neuronal dynamics. The model is formulated using the Caputo nabla difference operator, providing a rigorous mathematical framework that ...
Iqbal M. Batiha   +5 more
wiley   +1 more source

Polynomial realizations of some combinatorial Hopf algebras

open access: yesJournal of Noncommutative Geometry, 2014
We construct explicit polynomial realizations of some combinatorial Hopf algebras based on various kinds of trees or forests, and some more general classes of graphs, ranging from the Connes–Kreimer algebra to an algebra of labelled forests isomorphic to the Hopf algebra of parking functions and to a new noncommutative algebra based on endofunctions ...
Foissy, Loïc   +2 more
openaire   +5 more sources

Translations of rough paths in combinatorial Hopf algebras

open access: yes, 2021
We generalize Bruned et.al.'s notion of translation in geometric and branched rough paths to a notion of translation in rough paths over any combinatorial Hopf algebra. We show that this notion of translation is equivalent to two bialgebras being in cointeraction, subject to certain additional conditions.
openaire   +2 more sources

Mould calculus, polyhedral cones, and characters of combinatorial Hopf algebras

open access: yesAdvances in Applied Mathematics, 2013
We describe a method for constructing characters of combinatorial Hopf algebras by means of integrals over certain polyhedral cones. This is based on ideas from resurgence theory, in particular on the construction of well-behaved averages induced by diffusion processes on the real line.
Menous, Frédéric   +2 more
openaire   +2 more sources

The graded dual of a combinatorial Hopf algebra on partition diagrams

open access: yesJournal of Algebra and Its Applications
John M. Campbell constructed a Combinatorial Hopf Algebra (CHA) ParSym on partition diagrams by lifting the CHA structure of NSym, which is the Hopf algebra of non-commutative symmetric functions. In this paper, we construct the graded dual ParQSym of ParSym.
Lingxiao Hao, Shenglin Zhu
openaire   +2 more sources

Operads for complex system design specification, analysis and synthesis. [PDF]

open access: yesProc Math Phys Eng Sci, 2021
Foley JD   +3 more
europepmc   +1 more source

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