New posts in Differential Topology

Can continuous functions be made smooth by changing the smooth structure on the domain?

Introductory material for jets and jet bundles

Tangent bundle: disjoint union

How would you characterise the inverse image of this polynomial equation?

What is the surface obtained by identifying antipodal points of $\mathbb{S}^1 \times \mathbb{S}^1$?

Can a curve fill a disk?

Degree of a map when restricting it to a submanifold

Existence of a proper Morse function

Oriented knots, equivalence relation

Can we approximate a vector field on the plane with non-vanishing vector fields in $L^2$?