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Autor:
Garrel, Nicolas
Although there is no natural internal product for hermitian forms over an algebra with involution of the first kind, we describe how tomultiply two ε-hermitian forms to obtain a quadratic form over the base field. This allows to define a commutative
Externí odkaz:
https://tud.qucosa.de/id/qucosa%3A90505
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We study the geometric and topological properties of strange non-chaotic attractors created in non-smooth saddle-node bifurcations of quasiperiodically forced interval maps. By interpreting the attractors as limit objects of the iterates of a continu
Externí odkaz:
https://tud.qucosa.de/id/qucosa%3A70708
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We extend Følner’s amenability criterion to the realm of general topological groups. Building on this, we show that a topological group G is amenable if and only if its left-translation action can be approximated in a uniform manner by amenable ac
Externí odkaz:
https://tud.qucosa.de/id/qucosa%3A70711
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The central theme of complex systems research is to understand the emergent macroscopic properties of a system from the interplay of its microscopic constituents. The emergence of macroscopic properties is often intimately related to the structure of
Externí odkaz:
https://tud.qucosa.de/id/qucosa%3A70758
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https://tud.qucosa.de/api/qucosa%3A70758/attachment/ATT-0/
Autor:
Fuhrmann, Gabriel
We study one-parameter families of quasi-periodically forced monotone interval maps and provide sufficient conditions for the existence of a parameter at which the respective system possesses a non-uniformly hyperbolic attractor. This is equivalent t
Externí odkaz:
https://tud.qucosa.de/id/qucosa%3A70707
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https://tud.qucosa.de/api/qucosa%3A70707/attachment/ATT-0/
Autor:
Roos, Hans-Görg, Schopf, Martin
We consider a system of weakly coupled singularly perturbed convection-diffusion equations with multiple scales. Based on sharp estimates for first order derivatives, Linß [T. Linß, Computing 79 (2007) 23–32.] analyzed the upwind finite-differenc
Externí odkaz:
https://tud.qucosa.de/id/qucosa%3A39046
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https://tud.qucosa.de/api/qucosa%3A39046/attachment/ATT-0/
Autor:
Jäger, T., Passeggi, A.
In the context of the Franks–Misiurewicz conjecture, we study homeomorphisms of the two-torus semiconjugate to an irrational rotation of the circle. As a special case, this conjecture asserts uniqueness of the rotation vector in this class of syste
Externí odkaz:
https://tud.qucosa.de/id/qucosa%3A39051
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Autor:
Ahmed, Naveed, Matthies, Gunar
We present the analysis for the higher order continuous Galerkin−Petrov (cGP) time discretization schemes in combination with the one-level local projection stabilization in space applied to time-dependent convection-diffusion-reaction problems. Op
Externí odkaz:
https://tud.qucosa.de/id/qucosa%3A39044
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Here, we investigate different cell density-dependent migration strategies. In particular, we consider strategies which differ in the precise regulation of transitions between resting and motile phenotypes. We develop a lattice-gas cellular automaton
Externí odkaz:
https://tud.qucosa.de/id/qucosa%3A39048
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