Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Matthias Wink"'
We show that an $n$-dimensional Riemannian manifold with $n$-nonnegative or $n$-nonpositive curvature operator of the second kind has restricted holonomy $SO(n)$ or is flat. The result does not depend on completeness and can be improved provided the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8affb28426b68dc881f5c349f1c32c79
Autor:
Peter Petersen, Matthias Wink
Publikováno v:
Journal für die reine und angewandte Mathematik (Crelles Journal), vol 2021, iss 780
We show that compact Kähler manifolds have the rational cohomology ring of complex projective space provided a weighted sum of the lowest three eigenvalues of the Kähler curvature operator is positive. This follows from a more general vanishing and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b914f48ccf1ee6d7d97a2fa614f83197
https://escholarship.org/uc/item/6cf1f1nr
https://escholarship.org/uc/item/6cf1f1nr
Autor:
Gol Mohammad Dorrazehi, Matthias Winkle, Martin Desmet, Vincent Stroobant, Gamze Tanriver, Hervé Degand, Damien Evrard, Benoît Desguin, Pierre Morsomme, Jacob Biboy, Joe Gray, Karolina Mitusińska, Artur Góra, Waldemar Vollmer, Patrice Soumillion
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-16 (2024)
Abstract Penicillin binding proteins (PBPs) are involved in biosynthesis, remodeling and recycling of peptidoglycan (PG) in bacteria. PBP-A from Thermosynechococcus elongatus belongs to a cyanobacterial family of enzymes sharing close structural and
Externí odkaz:
https://doaj.org/article/d1d2fa49952f4ef1b225b6e3b51a7fda
Autor:
Peter Petersen, Matthias Wink
Publikováno v:
Annals of Global Analysis and Geometry, vol 61, iss 4
We prove rigidity results for compact Riemannian manifolds in the spirit of Tachibana. For example, we observe that manifolds with divergence free Weyl tensors and $\lfloor \frac{n-1}{2} \rfloor$-nonnegative curvature operators are locally symmetric
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a381ef6d760d4504ccb76b69223f434e
Publikováno v:
Algorithms, Vol 17, Iss 11, p 509 (2024)
This study focuses on developing a heuristic for Decision Support Systems (DSS) in e-commerce logistics education, specifically addressing the Two-Echelon Capacitated Vehicle Routing Problem (2E-CVRP). The 2E-CVRP involves using Urban Transshipment P
Externí odkaz:
https://doaj.org/article/2684d412e5714a3f9541b1baa7038d04
Autor:
Peter Petersen, Matthias Wink
In this note we study the Bochner formula on smooth metric measure spaces. We introduce weighted curvature conditions that imply vanishing of all Betti numbers.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c4d5168e996ba32116c7e23892bc869
https://escholarship.org/uc/item/60c1m8d3
https://escholarship.org/uc/item/60c1m8d3
Autor:
Matthias Wink, Peter Petersen
We prove a vanishing and estimation theorem for the $p^{\text{th}}$-Betti number of closed $n$-dimensional Riemannian manifolds with a lower bound on the average of the lowest $n-p$ eigenvalues of the curvature operator. This generalizes results due
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a9febf8c268945e2a3e2da3becbbc670
Autor:
Matthias Wink
In this paper a growth estimate on the soliton potential is shown for a large class of cohomogeneity one manifolds. This is used to construct continuous families of complete steady and expanding Ricci solitons in the set-ups of L\"u-Page-Pope and Dan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f0675082bce890fdc8fadd2e98a4e5f5
Autor:
Lola Kotova, Johanna Leissner, Matthias Winkler, Ralf Kilian, Stefan Bichlmair, Florian Antretter, Jürgen Moßgraber, Jürgen Reuter, Tobias Hellmund, Katharina Matheja, Michael Rohde, Uwe Mikolajewicz
Publikováno v:
Heritage Science, Vol 11, Iss 1, Pp 1-18 (2023)
Abstract According to the final report of the European Union OMC expert group on strengthening cultural heritage resilience for anthropogenic climate change, the impacts of climate change, particularly extreme weather events, on cultural heritage in
Externí odkaz:
https://doaj.org/article/2c53dd8babd94b3b9a34c591352882c5
Autor:
Laura Halbach, Lou-Anne Chevrollier, Eva L. Doting, Joseph M. Cook, Marie B. Jensen, Liane G. Benning, James A. Bradley, Martin Hansen, Lars C. Lund-Hansen, Stiig Markager, Brian K. Sorrell, Martyn Tranter, Christopher B. Trivedi, Matthias Winkel, Alexandre M. Anesio
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-14 (2022)
Abstract Blooms of pigmented algae darken the surface of glaciers and ice sheets, thereby enhancing solar energy absorption and amplifying ice and snow melt. The impacts of algal pigment and community composition on surface darkening are still poorly
Externí odkaz:
https://doaj.org/article/1070a3502cb44249a3fb1f026fd0dcbf