Zobrazeno 1 - 10
of 4 537
pro vyhledávání: '"Ohlmann, A"'
Dynamic Pickup-and-Delivery for Collaborative Platforms with Time-Dependent Travel and Crowdshipping
We study a pickup-and-delivery problem that arises when customers randomly submit requests over the course of a day from a choice of vendors on a collaborative e-commerce portal. Based on the attributes of a customer request, a dispatcher dynamically
Externí odkaz:
http://arxiv.org/abs/2408.07450
Autor:
Ohlmann, Gaspard
This article is the continuation of \cite{ohlmann2021illposedness} where we exhibited the ill-posedness of a quasi-linear wave equation in dimension $2$ for initial data in $H^{7/4}(\ln H^{7/4})$. Here, we look at modifications of the equation and sh
Externí odkaz:
http://arxiv.org/abs/2407.08409
Autor:
Pakmor, Rüdiger, Pelisoli, Ingrid, Justham, Stephen, Rajamuthukumar, Abinaya S., Röpke, Friedrich K., Schneider, Fabian R. N., de Mink, Selma E., Ohlmann, Sebastian T., Podsiadlowski, Philipp, Fraile, Javier Moran, Vetter, Marco, Andrassy, Robert
Stellar mergers are one important path to highly magnetised stars. Mergers of two low-mass white dwarfs may create up to every third hot subdwarf star. The merging process is usually assumed to dramatically amplify magnetic fields. However, so far on
Externí odkaz:
http://arxiv.org/abs/2407.02566
Autor:
Casares, Antonio, Ohlmann, Pierre
In the context of two-player games over graphs, a language $L$ is called positional if, in all games using $L$ as winning objective, the protagonist can play optimally using positional strategies, that is, strategies that do not depend on the history
Externí odkaz:
http://arxiv.org/abs/2401.15384
Autor:
Bojańczyk, Mikołaj, Ohlmann, Pierre
We propose to study transformations on graphs, and more generally structures, by looking at how the cut-rank (as introduced by Oum) of subsets is affected when going from the input structure to the output structure. We consider transformations in whi
Externí odkaz:
http://arxiv.org/abs/2401.13328
Autor:
Ohlmann, Gaspard
In this article, we study the well-posedness of the energy-critical half-wave maps equation (HWM) in dimension $1$. The half-wave maps equation emerges from the continuum limit of the Haldane Shastry spin chains and has been shown to arise as the con
Externí odkaz:
http://arxiv.org/abs/2310.13442
Autor:
Moran-Fraile, J., Roepke, F. K., Pakmor, R., Aloy, M. A., Ohlmann, S. T., Schneider, F. R. N., Leidi, G.
Publikováno v:
A&A 681, A41 (2024)
The merger of a white dwarf (WD) and a neutron star (NS) is a relatively common event that will produce an observable electromagnetic signal. Furthermore, the compactness of these stellar objects makes them an interesting candidate for gravitational
Externí odkaz:
http://arxiv.org/abs/2310.08623
Autor:
Ohlmann, Pierre, Skrzypczak, Michał
We study the existence of positional strategies for the protagonist in infinite duration games over arbitrary game graphs. We prove that prefix-independent objectives in {\Sigma}_0^2 which are positional and admit a (strongly) neutral letter are exac
Externí odkaz:
http://arxiv.org/abs/2309.17022
Autor:
Irmler, Andreas, Kanakagiri, Raghavendra, Ohlmann, Sebastian T., Solomonik, Edgar, Grüneis, Andreas
We propose an algorithm that aims at minimizing the inter-node communication volume for distributed and memory-efficient tensor contraction schemes on modern multi-core compute nodes. The key idea is to define processor grids that optimize intra-/int
Externí odkaz:
http://arxiv.org/abs/2307.08829
In stellar-dense environments, stars can collide with each other. For collisions close to a supermassive black hole (SMBH), the collisional kinetic energy can be so large that the colliding stars can be completely destroyed, potentially releasing an
Externí odkaz:
http://arxiv.org/abs/2307.07338