Results 11 to 20 of about 20 (20)

Examples of noncompact nonpositively curved manifolds

open access: yesBulletin of the London Mathematical Society, Volume 53, Issue 4, Page 1061-1071, August 2021., 2021
Abstract We give a simple construction of new, complete, finite volume manifolds M of bounded, nonpositive curvature. These manifolds have ends that look like a mixture of locally symmetric ends of different ranks and their fundamental groups are not duality groups.
Grigori Avramidi   +1 more
wiley   +1 more source

On the curvature of nonregular saddle surfaces in the hyperbolic and spherical three‐space

open access: yesAbstract and Applied Analysis, Volume 7, Issue 3, Page 113-123, 2002., 2002
This paper proves that any nonregular nonparametric saddle surface in a three‐dimensional space of nonzero constant curvature k, which is bounded by a rectifiable curve, is a space of curvature not greater than k in the sense of Aleksandrov. This generalizes a classical theorem by Shefel′ on saddle surfaces in 𝔼3.
Dimitrios E. Kalikakis
wiley   +1 more source

A characterization of regular saddle surfaces in the hyperbolic and spherical three‐space

open access: yesAbstract and Applied Analysis, Volume 7, Issue 7, Page 349-355, 2002., 2002
We prove that the class of regular saddle surfaces in the hyperbolic or spherical three‐space coincides with the class of regular surfaces with curvature not greater than the curvature of the surrounding space. We also show that a similar result for nonregular surfaces is incorrect.
Dimitrios E. Kalikakis
wiley   +1 more source

A placebo‐controlled, double‐blind study evaluating the effect of orally administered polyunsaturated fatty acids on the oclacitinib dose for atopic dogs

open access: yesVeterinary Dermatology, Volume 35, Issue 4, Page 408-417, August 2024.
Background – Supplementation of polyunsaturated fatty acids (PUFA) enables dose reduction of prednisolone and ciclosporin in canine atopic dermatitis (cAD). Objective – To determine if oral administration of PUFA can reduce the dose of oclacitinib for cAD. Conclusion – Oral supplementation of PUFA allowed dose reduction of oclacitinib and improved pVAS,
Laura Schäfer, Nina Thom
wiley   +1 more source

Information geometry for phylogenetic trees. [PDF]

open access: yesJ Math Biol, 2021
Garba MK, Nye TMW, Lueg J, Huckemann SF.
europepmc   +1 more source

Discrete cyclic systems and circle congruences. [PDF]

open access: yesAnn Mat Pura Appl, 2022
Hertrich-Jeromin U, Szewieczek G.
europepmc   +1 more source

Differential geometry of grassmannians and the Plücker map

open access: yesOpen Mathematics, 2012
Anan’in Sasha, Grossi Carlos
doaj   +1 more source

Quasi-minimal rotational surfaces in pseudo-Euclidean four-dimensional space

open access: yesOpen Mathematics, 2014
Ganchev Georgi, Milousheva Velichka
doaj   +1 more source

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