synthetic differential geometry
Introductions
from point-set topology to differentiable manifolds
geometry of physics: coordinate systems, smooth spaces, manifolds, smooth homotopy types, supergeometry
Differentials
Tangency
The magic algebraic facts
Theorems
Axiomatics
Models
differential equations, variational calculus
Euler-Lagrange equation, de Donder-Weyl formalism?,
Chern-Weil theory, ∞-Chern-Weil theory
Cartan geometry (super, higher)
equality (definitional, propositional, computational, judgemental, extensional, intensional, decidable)
isomorphism, weak equivalence, homotopy equivalence, weak homotopy equivalence, equivalence in an (∞,1)-category
Examples.
For a smooth function, a critical point is a point at which the derivative vanishes (or at heast has non-maximal rank).
The collection of all critical points is also called the critical locus of .
A formalization of this in cohesive geometry is at cohesive (infinity,1)-topos – infinitesimal cohesion – critical locus.
Critical loci are used to study topology in terms of Morse theory.
Critical loci of functionals on jet bundles are studied in variational calculus. See also at shell.
Last revised on January 31, 2021 at 10:34:59. See the history of this page for a list of all contributions to it.