Results 1 to 10 of about 941 (76)

Besov's Type Embedding Theorem for Bilateral Grand Lebesgue Spaces [PDF]

open access: yes, 2010
In this paper we obtain the non-asymptotic norm estimations of Besov's type between the norms of a functions in different Bilateral Grand Lebesgue spaces (BGLS).
Ostrovsky, E., Sirota, L.
core   +3 more sources

On the Integrability of Liénard systems with a strong saddle [PDF]

open access: yes, 2017
We study the local analytic integrability for real Li\'{e}nard systems, $\dot x=y-F(x),$ $\dot y= x$, with $F(0)=0$ but $F'(0)\ne0,$ which implies that it has a strong saddle at the origin.
Giné, Jaume, Llibre, Jaume
core   +4 more sources

Finding Liouvillian first integrals of rational ODEs of any order in finite terms [PDF]

open access: yes, 2005
It is known, due to Mordukhai-Boltovski, Ritt, Prelle, Singer, Christopher and others, that if a given rational ODE has a Liouvillian first integral then the corresponding integrating factor of the ODE must be of a very special form of a product of ...
Kosovtsov, Yuri N.
core   +5 more sources

Bosonization of World-Sheet Fermions in Minkowski Space-Time [PDF]

open access: yes, 1995
We propose a way of bosonizing free world-sheet fermions for $4$-dimensional heterotic string theory formulated in Minkowski space-time. We discuss the differences as compared to the standard bosonization performed in Euclidean space-time.Comment: 1+9 ...
Andrea Pasquinucci   +8 more
core   +2 more sources

On the Nagumo uniqueness theorem

open access: yes, 2011
By a convenient reparametrisation of the integral curves of a nonlinear ordinary differential equation (ODE), we are able to improve the conclusions of the recent contribution [A. Constantin, Proc. Japan Acad. {\bf 86(A)} (2010), 41--44]. In this way, we
Mustafa, Octavian G., O'Regan, Donal
core   +1 more source

Cesaro-Hardy operators on bilateral grand Lebesgue spaces [PDF]

open access: yes, 2013
We obtain in this short article the non-asymptotic estimations for the norm of (generalized) Cesaro-Hardy integral operators in the so-called Bilateral Grand Lebesgue Spaces.
Ostrovsky, E., Sirota, L.
core  

Cheng Equation: A Revisit Through Symmetry Analysis

open access: yes, 2019
The symmetry analysis of the Cheng Equation is performed. The Cheng Equation is reduced to a first-order equation of either Abel's Equations, the analytic solution of which is given in terms of special functions.
Halder, Amlan K   +3 more
core  

Geometry of the Abel Equation of the first kind

open access: yes, 2014
We study the first kind Abel differential equation $$\dfrac{dy}{dx}=c_0(x)+3c_1(x)y+3c_2y^2+c_3(x)y^3,$$ where the functions $c_i$ are real analytic. The first step of our analysis is through the Cartan equivalence method, then we use techniques from ...
Wone, Oumar
core  

The importance of quarantine: modelling the COVID-19 testing process. [PDF]

open access: yesJ Math Biol, 2023
Xu W   +4 more
europepmc   +1 more source

The effect of changing COVID-19 restrictions on the transmission rate in a veterinary clinic. [PDF]

open access: yesInfect Dis Model, 2023
Spence L   +6 more
europepmc   +1 more source

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