Results 161 to 170 of about 54,737 (202)
Existence of pullback attractors for pullback asymptotically compact processes [PDF]
Nonlinear Analysis: Theory, Methods & Applications, 2010 This paper is concerned with the existence of pullback attractors for evolution processes. Our aim is to provide results that extend the following results for autonomous evolution processes (semigroups) i) An autonomous evolution process which is bounded dissipative and asymptotically compact has a global attractor.
Tomas Caraballo +2 more
exaly +4 more sources
Pullback exponential attractors
Discrete and Continuous Dynamical Systems, 2010 In this work, we show how to construct a pullback exponential attractor associated with an infinite dimensional dynamical system, i.e., a family of time dependent compact sets, with finite fractal dimension, which are positively invariant and exponentially attract in the pullback sense every bounded set of the phase space.
Jose A Langa
exaly +2 more sources
Some of the next articles are maybe not open access.
Related searches:
Related searches:
Learning Pullback HMM Distances
IEEE Transactions on Pattern Analysis and Machine Intelligence, 2014Recent work in action recognition has exposed the limitations of methods which directly classify local features extracted from spatio-temporal video volumes. In opposition, encoding the actions' dynamics via generative dynamical models has a number of attractive features: however, using all-purpose distances for their classification does not ...
Fabio, Cuzzolin, Michael, Sapienza
openaire +2 more sources
Human Systems Management, 1980
The purpose of this paper is to present a structural approach appropriate for the processes with multiple evaluations, and, more generally, to processes with evolutive sets of evaluations. The key point is that humans naturally aggregate partial evaluations in order to achieve structural stability.
openaire +1 more source
The purpose of this paper is to present a structural approach appropriate for the processes with multiple evaluations, and, more generally, to processes with evolutive sets of evaluations. The key point is that humans naturally aggregate partial evaluations in order to achieve structural stability.
openaire +1 more source
Hilbert Rings Arising as Pullbacks
Canadian Mathematical Bulletin, 1992AbstractLet R be the pullback A ×cB, where B → C is a surjective homomorphism of commutative rings and A is a subring of C. It is shown that R and C are Hilbert rings if and only if A and B are Hilbert rings. Applications are given to the D + XE[X], D + M, and D + (X1,..., Xn)Ds[X1,..., Xn] constructions. For these constructions, new examples are given
ANDERSON DF, DOBBS DE, FONTANA, Marco
openaire +1 more source
Forward and pullback attraction on pullback attractors
SeMA Journal, 2010Pullback attractors are important elements to study the asymptotic behaviour for nonautonomous PDEs because they copy the pullback dynamic of the system inside them. Although pullback and forward dynamic may not be related, there exist some cases when the trajectories converge forward in time to the pullback attractor.
openaire +1 more source
Pullbacks in Regular Categories
Canadian Mathematical Bulletin, 1973Given a pair of mapsin a category, we would like to know whether they form part of a pullback diagram as follows:I am indebted to Basil Rattray for mentioning the solution of this problem for the category of sets. Here we shall solve it for any regular category in the sense of Barr [1].It will be useful to make the following definition.
openaire +1 more source
Communications in Algebra, 2015
Given two epimorphisms of algebras A ↠ B and C ↠ B, we consider the pullback R. We introduce a particular class of algebras, the tree oriented pullback, where there is a close relationship between the category of indecomposable modules of these algebras. This leads us to prove that if A and C are hereditary algebras, then R is a tilted algebra.
Viktor Bekkert +2 more
openaire +1 more source
Given two epimorphisms of algebras A ↠ B and C ↠ B, we consider the pullback R. We introduce a particular class of algebras, the tree oriented pullback, where there is a close relationship between the category of indecomposable modules of these algebras. This leads us to prove that if A and C are hereditary algebras, then R is a tilted algebra.
Viktor Bekkert +2 more
openaire +1 more source
Communications in Algebra, 2009
Geometric invariant theory can be used to construct moduli spaces associated to representations of finite dimensional algebras. One difficulty which occurs in various natural cases is that nonisomorphic modules are sent to the same point in the moduli spaces which arise.
Frauke M. Bleher, Ted Chinburg
openaire +1 more source
Geometric invariant theory can be used to construct moduli spaces associated to representations of finite dimensional algebras. One difficulty which occurs in various natural cases is that nonisomorphic modules are sent to the same point in the moduli spaces which arise.
Frauke M. Bleher, Ted Chinburg
openaire +1 more source
Pullback trajectory attractors
Evolution Equations and Control TheoryzbMATH Open Web Interface contents unavailable due to conflicting licenses.
Samprogna, Rodrigo Antonio +1 more
openaire +1 more source