Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Duccio Papini"'
Autor:
Fabio Zanolin, Duccio Papini
Publikováno v:
Fixed Point Theory and Applications, Vol 2004, Iss 2, Pp 113-134 (2004)
We propose, in the general setting of topological spaces, a definition of two-dimensional oriented cell and consider maps which possess a property of stretching along the paths with respect to oriented cells. For these maps, we prove some theorems on
Externí odkaz:
https://doaj.org/article/b057a0cb992a46c2b92a6d32eb034cfe
We deal with a weakly coupled system of ODEs of the type $$\begin{aligned} x_j'' + n_j^2 \,x_j + h_j(x_1,\ldots ,x_d) = p_j(t), \qquad j=1,\ldots ,d, \end{aligned}$$ x j ′ ′ + n j 2 x j + h j ( x 1 , … , x d ) = p j ( t ) , j = 1 , … , d , wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4dc65cb0c01803f5cce876ebb820536
Publikováno v:
Journal of Differential Equations. 262:5990-6017
We prove the existence of multiple positive radial solutions to the sign-indefinite elliptic boundary blow-up problem { Δ u + ( a + ( | x | ) − μ a − ( | x | ) ) g ( u ) = 0 , | x | 1 , u ( x ) → ∞ , | x | → 1 , where g is a function supe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76a31491889f0d1f205048005c34f243
https://doi.org/10.1016/j.jde.2017.02.025
https://doi.org/10.1016/j.jde.2017.02.025
Given a smooth function U ( t , x ) U(t,x) , T T -periodic in the first variable and satisfying U ( t , x ) = O ( | x | α ) U(t,x) = \mathcal {O}(\vert x \vert ^{\alpha }) for some α ∈ ( 0 , 2 ) \alpha \in (0,2) as | x | → ∞ \vert x \vert \to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca799c4d702e53b35ef52aa77c4dab08
http://arxiv.org/abs/1902.08407
http://arxiv.org/abs/1902.08407
Publikováno v:
26 pages, 19 figures. 2018
We propose a new model for the time evolution of livestock commodities which exhibits endogenous deterministic stochastic behaviour. The model is based on the Yoccoz-Birkeland integral equation, a model first developed for studying the time-evolution
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f79aa37e559bde538b30efda4035e524
https://hal.archives-ouvertes.fr/hal-01812794/file/ArMaPa_hr.pdf
https://hal.archives-ouvertes.fr/hal-01812794/file/ArMaPa_hr.pdf
For the planar $N$-centre problem $$ \ddot x = - \sum_{i=1}^N \frac{m_i (x-c_i)}{| x - c_i|^{\alpha+2}}, \qquad x \in \mathbb{R}^2 \setminus \{ c_1,\ldots,c_N \}, $$ where $m_i > 0$ for $i=1,\ldots,N$ and $\alpha \in [1,2)$, we prove the existence of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c0ede6e503ace315a0722f1349cb9cb7
http://arxiv.org/abs/1704.01307
http://arxiv.org/abs/1704.01307
Autor:
Fabio Zanolin, Duccio Papini
Motivated by some recent studies on the Allen–Cahn phase transition model with a periodic nonautonomous term, we prove the existence of complex dynamics for the second order equation $$\begin{aligned} -\ddot{x} + \left( 1 + \varepsilon ^{-1} A(t)\r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63abfb992c41b17cacb8233fda56c7ba
http://hdl.handle.net/11390/1091946
http://hdl.handle.net/11390/1091946
Publikováno v:
Nonlinear Differential Equations and Applications NoDEA. 22:263-299
We first study the linear eigenvalue problem for a planar Dirac system in the open half-line and describe the nodal properties of its solution by means of the rotation number. We then give a global bifurcation result for a planar nonlinear Dirac syst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71b6e278ccd8f20a5e8973dd393df66e
https://doi.org/10.1007/s00030-014-0282-1
https://doi.org/10.1007/s00030-014-0282-1