nLab
plane

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Context

Topology

topology

algebraic topology

Basic concepts

Theorems

Extra stuff, structure, properties

Examples

Manifolds and cobordisms

manifolds and cobordisms

Definitions

Genera and invariants

Theorem

Contents

Definition

The plane is the Cartesian space ℝ 2.

Properties

This is naturally a topological space, a manifold, a smooth manifold.

Revised on December 8, 2010 12:32:08 by Urs Schreiber (131.211.233.8)
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