Results 61 to 70 of about 567,713 (175)

Metoda Sił dla Układów Lepkosprężystych

open access: yesEngineering Transactions, 1970
In the paper the equation is given of the method of forces for visco-elastic systems, and the properties of the given set of equations are analyzed. In particular, a class of load functions has been separated ensuring the identity of the states of stress
J. Kubik
doaj  

Multiple positive solutions for nonhomogeneous Schrodinger-Poisson systems with Berestycki-Lions type conditions

open access: yesElectronic Journal of Differential Equations, 2021
In this article, we consider the multiplicity of solutions for nonhomogeneous Schrodinger-Poisson systems under the Berestycki-Lions type conditions.
Lan-Xin Huang   +2 more
doaj  

On Binomial Identities in Arbitrary Bases

open access: yes, 2016
We extend the digital binomial identity as given by Nguyen el al. to an identity in an arbitrary base $b$, by introducing the $b-$ary binomial coefficients.
Jiu, Lin, Vignat, Christophe
core   +1 more source

Asgeirsson's Mean Value Theorem and Related Identities

open access: yesJournal of Functional Analysis, 2001
\textit{L. Schwartz} observed the equivalence of the mean value property of a harmonic function, i.e. \[ f_R\ast u=0\text{ for } u \text{ with } \Delta_xu=0,\;f_R=2R\delta\bigl(|x|^2-R^2\bigr)-R^{n-1}\omega_n\delta, \] with the (unique) existence of a distribution \(\mu_R\) with compact support such that \(\Delta_x\mu_R=f_R.\) Explicitly, \(\mu_R=\text{
openaire   +2 more sources

On the perfectness of C^{∞,s}-diffeomorphism groups on a foliated manifold [PDF]

open access: yesOpuscula Mathematica, 2008
The notion of \(C^{r,s}\) and \(C^{\infty,s}\)-diffeomorphisms is introduced. It is shown that the identity component of the group of leaf preserving \(C^{\infty,s}\)-diffeomorphisms with compact supports is perfect.
Jacek Lech
doaj  

Determinants as Combinatorial Summation Formulas over an Algebra with a Unique $n$-ary Operation

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2018
Since the late 1980s the author has published a number of results on matrix functions, which were obtained using the generating functions, mixed discriminants (mixed volumes in $\mathbb R^n$), and the well-known polarization theorem (the most general ...
G.P. Egorychev
doaj   +1 more source

Generalized Picone's identity and its applications

open access: yesElectronic Journal of Differential Equations, 2013
In this article we give a generalized version of Picone's identity in a nonlinear setting for the p-Laplace operator. As applications we give a Sturmian Comparison principle and a Liouville type theorem.
Kaushik Bal
doaj  

Computing Equilibrium Free Energies Using Non-Equilibrium Molecular Dynamics

open access: yesEntropy, 2013
As shown by Jarzynski, free energy differences between equilibrium states can be expressed in terms of the statistics of work carried out on a system during non-equilibrium transformations.
Christoph Dellago, Gerhard Hummer
doaj   +1 more source

Low-cost group-based identity security authentication protocol for NB-IoT nodes

open access: yesTongxin xuebao, 2021
To address the problem of huge number of signaling requests when large-scale devices request authentication in NB-IoT network, a low-cost group identity security authentication protocol based on Schnorr aggregate signature and Chinese reminder theorem ...
Xiangmao CHANG, Jun ZHAN, Zhiwei WANG
doaj   +2 more sources

Identity in modal logic theorem proving [PDF]

open access: yesStudia Logica, 1993
In this paper the `relational' translation from quantified modal logics with identity into first-order predicate logic is repeated. In this well- known method, the Kripke semantics of the modal \(\square\)-operator: \(\square p\) is true in a world if \(p\) is true in all accessible worlds, is turned into a translation rule: \(\text{tr}(\square p,w)\to
openaire   +2 more sources

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