nLab
meager set

Meager set

Context

Topology

topology (point-set topology, point-free topology)

see also differential topology, algebraic topology, functional analysis and topological homotopy theory

Introduction

Basic concepts

Universal constructions

Extra stuff, structure, properties

Examples

Basic statements

Theorems

Analysis Theorems

topological homotopy theory

Meager set

Definition

A subset AXA\subseteq X of a topological space XX is called meager (alias first category, often meagre outside the USA) if it is a countable union of nowhere dense subsets of XX.

Last revised on June 27, 2020 at 00:47:56. See the history of this page for a list of all contributions to it.