[HTML][HTML] The diffeology of Milnor's classifying space

JP Magnot, J Watts - Topology and its Applications, 2017 - Elsevier
We define a diffeology on the Milnor classifying space of a diffeological group G, constructed
in a similar fashion to the topological version using an infinite join. Besides obtaining the …

Well-posedness of the Kadomtsev–Petviashvili hierarchy, Mulase factorization, and Frölicher Lie groups

JP Magnot, EG Reyes - Annales Henri Poincaré, 2020 - Springer
We recall the notions of Frölicher and diffeological spaces, and we build regular Frölicher
Lie groups and Lie algebras of formal pseudo-differential operators in one independent …

On the geometry of pseudodifferential operators based on renormalized traces

JP Magnot - arXiv preprint arXiv:2007.00387, 2020 - arxiv.org
In this article, we examine the geometry of a group of Fourier-integral operators, which is the
central extension of $ Diff (S^ 1) $ with a group of classical pseudo-differential operators of …

The group of diffeomorphisms of a non-compact manifold is not regular

JP Magnot - Demonstratio Mathematica, 2018 - degruyter.com
We show that a group of diffeomorphisms D on the open unit interval I, equipped with the
topology of uniform convergence on any compact set of the derivatives at any order, is non …

Differentiation on spaces of triangulations and optimized triangulations.

JP Magnot - Journal of Physics: Conference Series, 2016 - iopscience.iop.org
We describe a smooth structure, called Frolicher space, on CW complexes and spaces of
triangulations. This structure enables differential methods for eg minimization of …

On mathematical structures on pairwise comparisons matrices with coefficients in an abstract group arising from quantum gravity

JP Magnot - Heliyon, 2019 - cell.com
We describe the mathematical properties of pairwise comparisons matrices with coefficients
in an arbitrary group. Inspired by the well-known mathematical structures of quantum gravity …

[PDF][PDF] A geometric framework for the inconsistency in pairwise comparisons

WW Koczkodaj, JP Magnot - arXiv preprint arXiv:1601.01301, 2016 - academia.edu
In this study, a pairwise comparison matrix is generalized to the case when coefficients
create Lie group G, non necessarily abelian. A necessary and sufficient criterion for pairwise …

Well-posedness of the Kadomtsev-Petviashvili hierarchy, Mulase factorization, and Fr\" olicher Lie groups

JP Magnot, EG Reyes - arXiv preprint arXiv:1608.03994, 2016 - arxiv.org
We recall the notions of Fr\" olicher and diffeological spaces and we build regular Fr\" olicher
Lie groups and Lie algebras of formal pseudo-differential operators in one independent …