Cognitive tasks could be biased towards generalists: a lesson from wild non-eusocial bees. [PDF]
Kashetsky T, Raine NE, Forrest JRK.
europepmc +1 more source
Comparative mitogenomics of <i>Cheiracanthium</i> species (Araneae: Cheiracanthiidae) with phylogenetic implication and evolutionary insights. [PDF]
Li Z, Zhang F.
europepmc +1 more source
C<sub>4</sub> photosynthetic anatomy is associated with higher leaf hydraulic conductance and capacitance in Alloteropsis semialata. [PDF]
Zhou Y, Dunning LT, Liu H, Osborne CP.
europepmc +1 more source
The Explosive Radiation of the Neotropical Tillandsia Subgenus Tillandsia (Bromeliaceae) Has Been Accompanied by Pervasive Hybridization. [PDF]
Yardeni G +7 more
europepmc +1 more source
Ultrametric spaces and logic programming [PDF]
Summary: We prove a very general multivalued fixed point theorem for ultrametric spaces which at the same time is a generalization of the multivalued fixed point theorem of Khamsi, Kreinovich and Misane for generalized metric spaces and our (singlevalued) fixed point theorem for ultrametric spaces.
Paulo Ribenboim
exaly +3 more sources
Wavelets on ultrametric spaces [PDF]
The authors consider ultrametric spaces with a metric \(| xy| \) satisfying the strong triangle inequality \(| ab| \leq\max(| ac| ,| cd| )\) for all \(c\). They construct measures in ultrametric spaces and introduce bases in quadratically integrable (complex valued) function spaces.
S V Kozyrev, A Yu Khrennikov
exaly +3 more sources
Constructions of Urysohn Universal Ultrametric Spaces [PDF]
In this paper, we give new constructions of Urysohn universal ultrametric spaces. We first characterize a Urysohn universal ultrametric subspace of the space of all continuous functions whose images contain the zero, from a zero-dimensional compact Hausdorff space without isolated points into the space of non-negative real numbers equipped with the ...
Ishiki, Yoshito
exaly +5 more sources
Ultrametric Preserving Functions and Weak Similarities of Ultrametric Spacesā^* [PDF]
18 pages, 1 ...
Ruslan Shanin
exaly +4 more sources
Polish ultrametric Urysohn spaces and their isometry groups [PDF]
In this paper we give some new constructions of Polish ultrametric Urysohn spaces and investigate the universality properties of their isometry groups.
Su Gao
exaly +2 more sources
Some fixed point results in ultrametric spaces [PDF]
Geometrically, ultrametric spaces and hyperconvex metric spaces are sharply distinct. However spherically complete ultrametric space and hyperconvex metric space share striking similarities. Several of these similarities are discussed here.
Naseer Shahzad
exaly +2 more sources

