Embedding X in its Powerset P(X)
Monday, April 17, 2017
In this note we prove that the natural inclusion
j : X ⟶ P(X) with j : x ↦ {x},
of a
Vague Adjunction of Points to Spaces
Monday, April 17, 2017
We add a point to a diffeological space, counting for nothing, and we look at the consequences.
X
On Hamiltonian Diffeomorphisms
Thursday, December 15, 2016
We describe the group Ham(X, ω), of Hamiltonian transformations of a parasymplectic space (X, ω),
Diffeomorphisms of the Square
Thursday, December 15, 2016
We prove that the group of diffeomorphisms of the closed square
Sq = [0,1]2
has three orbits:
k-Forms on Half-Spaces
Thursday, July 28, 2016
With Serap Gürer, we prove that the differential k-forms on the half-spaces
Hn = [0,∞[ x Rn-1,
