manifolds and cobordisms
cobordism theory, Introduction
Definitions
Genera and invariants
Classification
Theorems
A surface is a space of dimension 2.
In differential geometry this means a 2-dimensional smooth manifold or something thereby parametrized?.
In complex analytic geometry this usually means a complex manifold of complex dimension 2.
Similarly and more generally, in algebraic geometry an algebraic surface is a variety of algebraic dimension 2.
analog for dimension 1: curve, algebraic curve
Discussion of de Rham cohomology of surfaces:
Last revised on November 28, 2023 at 11:40:21. See the history of this page for a list of all contributions to it.