Results 81 to 90 of about 1,082,995 (200)
Metric spaces with small rough angles and the rectifiability of rough self‐contracted curves
Journal of the London Mathematical Society, Volume 114, Issue 3, September 2026.Abstract The small rough angle (SRA$\operatorname{SRA}$) condition, introduced by Zolotov in arXiv:1804.00234, captures the idea that all angles formed by triples of points in a metric space are small. In the first part of the paper, we develop the theory of metric spaces (X,d)$(X,d)$ satisfying the SRA(α)$\operatorname{SRA}(\alpha)$ condition for some
Estibalitz Durand Cartagena +1 more
wiley +1 more source
Tree metrics and log‐concavity for matroids
Proceedings of the London Mathematical Society, Volume 133, Issue 3, September 2026.Abstract We show that a set function ν$\nu$ satisfies the gross substitutes property if and only if its homogeneous generating polynomial Zq,ν$Z_{q,\nu }$ is a Lorentzian polynomial for all positive q⩽1$q \leqslant 1$, answering a question of Eur–Huh.
Federico Ardila‐Mantilla +5 more
wiley +1 more source
Ecology and Evolution, Volume 16, Issue 8, August 2026.We evaluated adaptation to torpor and hibernation in the genus Dromiciops by comparing it with both torpid and non‐torpid marsupials, and investigated divergent selection signals between its two species. For the ancestral node, we identified positive selection in the genes PFKFB2, LAMP3, OTX1, and RAPSN, alongside an enrichment of pathways potentially ...
Elisa Gonzalez‐Ugalde +7 more
wiley +1 more source
Tato bakalářská práce se věnuje interpretaci ultrametrických prostorů jako koncových listů stromů. Nejprve zformulujeme a dokážeme některé základní vlastnosti ultrametric- kých prostorů a uvedeme pár příkladů.
Procházka, Daniel Josef
core
C0-semigroups of linear operators on some ultrametric Banach spaces
International Journal of Mathematics and Mathematical Sciences, 2006 C0-semigroups of linear operators play a crucial role in the solvability of evolution equations in the classical context. This paper is concerned with a brief conceptualization of C0-semigroups on (ultrametric) free Banach spaces E.
Toka Diagana
doaj +1 more source
Graev Metrics and Isometry Groups of Polish Ultrametric Spaces [PDF]
, 2013 This dissertation presents results about computations of Graev metrics on free groups and characterizes isometry groups of countable noncompact Heine-Borel Polish ultrametric spaces.
Shi, Xiaohui
core +1 more source
Ultrametric Spaces of Branches on Arborescent Singularities [PDF]
, 2018 37 pages, 16 figures. Compared to the first version on Arxiv, il has a new section 4.3, accompanied by 2 new figures.
García Barroso, Evelia +2 more
openaire +3 more sources
Notes on exchange interactions in holographic p-adic CFT
Physics Letters B, 2017 There is a renewed interest in conformal field theories (CFT) on ultrametric spaces (p-adic field and its algebraic extensions) in view of their natural adaptability to the holographic setting.
Parikshit Dutta +2 more
doaj +1 more source
Journal of MathematicsThis study explores fixed points and common fixed points for self-mappings on ultrametric spaces, regardless of the assumption of spherical completeness.
N. Uthirasamy +4 more
doaj +1 more source
On generalizations of some fixed point theorems in semimetric spaces with triangle functions
Frontiers in Applied Mathematics and StatisticsIn the present study, we prove generalizations of Banach, Kannan, Chatterjea, Ćirić-Reich-Rus fixed point theorems, as well as of the fixed point theorem for mapping contracting perimeters of triangles.
Evgeniy Petrov +2 more
doaj +1 more source