Zobrazeno 1 - 10
of 387
pro vyhledávání: '"Schmidt, Marcel"'
Autor:
Schmidt, Marcel, Zimmermann, Ian
We study non-linear Schr\"odinger operators on graphs. We construct minimal nonnegative solutions to corresponding semi-linear elliptic equations and use them to introduce the notion of stochastic completeness at infinity in a non-linear setting. We
Externí odkaz:
http://arxiv.org/abs/2403.15125
We study the set of intrinsic metrics on a given graph. This is a convex compact set and it carries a natural order. We investigate existence of largest elements with respect to this order. We show that the only locally finite graphs which admit a la
Externí odkaz:
http://arxiv.org/abs/2308.12665
Autor:
Murmann, Simon, Schmidt, Marcel
In this paper we give a version of Harris' criterion for determining $H^{1,p}_0$ within $H^{1,p}$ on discrete spaces. Moreover, we provide a converse via Hardy inequalities involving distances to metric boundaries.
Externí odkaz:
http://arxiv.org/abs/2303.07092
We develop a new approach to recurrence and the existence of non-constant harmonic functions on infinite weighted graphs. The approach is based on the capacity of subsets of metric boundaries with respect to intrinsic metrics. The main tool is a conn
Externí odkaz:
http://arxiv.org/abs/2301.01994
We characterize all semigroups sandwiched between the semigroup of a Dirichlet form and the semigroup of its active main part. In case the Dirichlet form is regular, we give a more explicit description of the quadratic forms of the sandwiched semigro
Externí odkaz:
http://arxiv.org/abs/2301.01035
Autor:
Schmidt, Marcel
Während Begriffe wie Klimawandel und sozial-ökologische Transformation zum festen Bestandteil der fachlichen wie alltäglichen Kommunikation geworden sind, ist es weder der Disziplin noch der Profession Sozialer Arbeit bislang gelungen, sich fachli
Externí odkaz:
https://library.oapen.org/handle/20.500.12657/52613