Concept
Théorèmes d'isomorphisme
Publications associées (34)
How hard is to distinguish graphs with graph neural networks?
A hallmark of graph neural networks is their ability to distinguish the isomorphism class of their inputs. This study derives hardness results for the classification variant of graph isomorphism in the message-passing model (MPNN). MPNN encompasses the maj ...
2020On Power Scalability of Modular Multilevel Converters: Increasing Current Ratings Through Branch Paralleling
Drazen Dujic, Stefan Milovanovic
The modular multilevel converter (MMC) presented in Figure 1 found its place within highvoltage and medium-voltage (MV) applications owing to the possibility of effortlessly meeting the imposed voltage requirements by stacking the so-called submodules (SMs ...
2020Finitely generated infinite simple groups of homeomorphisms of the real line
We construct examples of finitely generated infinite simple groups of homeomorphisms of the real line. Equivalently, these are examples of finitely generated simple left (or right) orderable groups. This answers a well known open question of Rhemtulla from ...
SPRINGER HEIDELBERG2019Comprehensive Analysis and Design of a Quasi Two-Level Converter Leg
Drazen Dujic, Stefan Milovanovic
Quasi two-level operation of voltage source converters, intended to operate either within high/medium voltage DC networks or low output frequency applications, has caught the attention of both academia and industry. Sequential insertion of the so-called su ...
2019A generalization of Kátai's orthogonality criterion with applications
We study properties of arithmetic sets coming from multiplicative number theory and obtain applications in the theory of uniform distribution and ergodic theory. Our main theorem is a generalization of Kátai's orthogonality cri ...
2019First principles gyrokinetic analysis of electromagnetic plasma instabilities
Laurent Villard, Stephan Brunner, Emmanuel Lanti, Alberto Bottino, Noé Thomas Elie Ohana
A two-fold analysis of electromagnetic core tokamak instabilities in the framework of the gyrokinetic theory is presented. First principle theoretical foundations of the gyrokinetic theory are used to explain and justify the numerical results obtained with ...
IOP PUBLISHING LTD2019Restriction of irreducible modules for Spin2+1(K) to Spin2(K)
Let K be an algebraically closed field of characteristic and let be a simply connected simple algebraic group of type over . Also let be the subgroup of type , embedded in in the usual way, as the ...
2017Patching And Weak Approximation In Isometry Groups
Let R be a semilocal principal ideal domain. Two algebraic objects over R in which scalar extension makes sense (e.g. quadratic spaces) are said to be of the same genus if they become isomorphic after extending scalars to all completions of R and its fract ...
Amer Mathematical Soc2017Revisiting the nilpotent polynomial Hales–Jewett theorem
Answering a question posed by Bergelson and Leibman in [6], we establish a nilpotent version of the Polynomial Hales–Jewett Theorem that contains the main theorem in [6] as a special case. Important to the formulation and the proof of our main theorem is t ...
2017Elliptic curves over a finite field and the trace formula
We prove formulas for power moments for point counts of elliptic curves over a finite field k such that the groups of k-points of the curves contain a chosen subgroup. These formulas express the moments in terms of traces of Hecke operators for certain con ...
Wiley2017