Zobrazeno 1 - 10
of 117
pro vyhledávání: '"Pfeiffer, Markus"'
We introduce a new framework for solving an important class of computational problems involving finite permutation groups, which includes calculating set stabilisers, intersections of subgroups, and isomorphisms of combinatorial structures. Our techn
Externí odkaz:
http://arxiv.org/abs/2106.13132
Autor:
Xin, Ling, Lu, Mo, Both, Steffen, Pfeiffer, Markus, Urban, Maximilian J., Zhou, Chao, Yan, Hao, Weiss, Thomas, Liu, Na, Lindfors, Klas
Publikováno v:
ACS Photonics 6, 4, 985-993 (2019)
Plasmonic nanoantennas allow for enhancing the spontaneous emission, altering the emission polarization, and shaping the radiation pattern of quantum emitters. A critical challenge for the experimental realizations is positioning a single emitter int
Externí odkaz:
http://arxiv.org/abs/2105.02043
We introduce a new framework for solving an important class of computational problems involving finite permutation groups, which includes calculating set stabilisers, intersections of subgroups, and isomorphisms of combinatorial structures. Our techn
Externí odkaz:
http://arxiv.org/abs/1911.04783
Autor:
Holt, Derek, Linton, Stephen, Neunhoeffer, Max, Parker, Richard, Pfeiffer, Markus, Roney-Dougal, Colva M.
It is undecidable in general whether a given finitely presented group is word hyperbolic. We use the concept of pregroups, introduced by Stallings, to define a new class of van Kampen diagrams, which represent groups as quotients of virtually free gr
Externí odkaz:
http://arxiv.org/abs/1905.09770
This paper studies the classes of semigoups and monoids with context-free and deterministic context-free word problem. First, some examples are exhibited to clarify the relationship between these classes and their connection with the notions of word-
Externí odkaz:
http://arxiv.org/abs/1903.10493
Data visualization and interaction with large data sets is known to be essential and critical in many businesses today, and the same applies to research and teaching, in this case, when exploring large and complex mathematical objects. GAP is a compu
Externí odkaz:
http://arxiv.org/abs/1806.08648
Autor:
Pfeiffer, Markus, Whybrow, Madeleine
Majorana theory was introduced by A. A. Ivanov as an axiomatic framework in which to study objects related to the Monster simple group and the Griess algebra. Since its inception, it has been used to construct a number of new and important subalgebra
Externí odkaz:
http://arxiv.org/abs/1803.10723
Autor:
Pfeiffer, Markus, Atkinson, Paola, Rastelli, Armando, Schmidt, Oliver G., Giessen, Harald, Lippitz, Markus, Lindfors, Klas
Plasmon resonant arrays or meta-surfaces shape both the incoming optical field and the local density of states for emission processes. They provide large regions of enhanced emission from emitters and greater design flexibility than single nanoantenn
Externí odkaz:
http://arxiv.org/abs/1801.03448
We introduce orbital graphs and discuss some of their basic properties. Then we focus on their usefulness for search algorithms for permutation groups, including finding the intersection of groups and the stabilizer of sets in a group.
Externí odkaz:
http://arxiv.org/abs/1703.04272
We describe a family of new algorithms for finding the canonical image of a set of points under the action of a permutation group. This family of algorithms makes use of the orbit structure of the group, and a chain of subgroups of the group, to effi
Externí odkaz:
http://arxiv.org/abs/1703.00197