Results 41 to 50 of about 261,851 (366)

Fundamentals of the Thermohydrogravidynamic Theory of the Global Seismotectonic Activity of the Earth

open access: yesInternational Journal of Geophysics, 2013
The article presents the fundamentals of the cosmic geophysics (representing the deterministic thermohydrogravidynamic theory intended for earthquakes prediction) based on the author's generalized differential formulation of the first law of ...
Sergey V. Simonenko
doaj   +1 more source

A pseudospectral method for investigating the stability of linear population models with two physiological structures

open access: yesMathematical Biosciences and Engineering, 2023
The asymptotic stability of the null equilibrium of a linear population model with two physiological structures formulated as a first-order hyperbolic PDE is determined by the spectrum of its infinitesimal generator.
Alessia Andò   +3 more
doaj   +1 more source

Energy of knots and the infinitesimal cross ratio [PDF]

open access: yes, 2008
This is a survey article on two topics. The Energy E of knots can be obtained by generalizing an electrostatic energy of charged knots in order to produce optimal knots. It turns out to be invariant under Moebius transformations.
O'Hara, Jun
core   +4 more sources

Infinitesimally stable endomorphisms [PDF]

open access: yesTransactions of the American Mathematical Society, 1994
For diffeomorphisms infinitesimal stability is well-known to be an open property that is equivalent to structural stability. The author uses an idea of K. Odani to show that for endomorphisms this property is not open. It is shown also that if an endomorphism \(f\) belongs to the interior of the set of infinitesimally stable ones, then \(f\) is ...
openaire   +2 more sources

A continuation A-deformations of surfaces of positive curvature with boundary

open access: yesPracì Mìžnarodnogo Geometričnogo Centru, 2015
Infinitesimal areal deformation (A-deformations) of higher order of surfaces include as a special case  A-deformations of the first order and infinitesimal bending of higher orders.
Татьяна Юрьевна Подоусова   +1 more
doaj   +1 more source

Infinitesimal Newton-Okounkov bodies and jet separation [PDF]

open access: yes, 2015
In this paper we explore the connection between asymptotic base loci and Newton-Okounkov bodies associated to infinitesimal flags. Analogously to the surface case, we obtain complete characterizations of augmented and restricted base loci.
Alex Kuronya, Victor Lozovanu
semanticscholar   +1 more source

Theory of B(X)-Module: Algebraic Module Structure of Generally Unbounded Infinitesimal Generators

open access: yesAdvances in Mathematical Physics, 2020
The concept of logarithmic representation of infinitesimal generators is introduced, and it is applied to clarify the algebraic structure of bounded and unbounded infinitesimal generators.
Yoritaka Iwata
doaj   +1 more source

The Noncommutative Infinitesimal Equivariant Index Formula [PDF]

open access: yes, 2015
In this paper, we establish an infinitesimal equivariant index formula in the noncommutative geometry framework using Greiner's approach to heat kernel asymptotics.
Wang, Yong
core   +1 more source

Operator algebra as an application of logarithmic representation of infinitesimal generators

open access: yes, 2017
The operator algebra is introduced based on the framework of logarithmic representation of infinitesimal generators. In conclusion a set of generally-unbounded infinitesimal generators is characterized as a module over the Banach algebra.Comment: To be ...
Iwata, Yoritaka
core   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

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