category theory

# Contents

## Idea

A tower is a diagram of the shape of the poset of natural numbers

$\cdots \to {X}_{2}\to {X}_{1}\to {X}_{0}\phantom{\rule{thinmathspace}{0ex}}.$\cdots \to X_2 \to X_1 \to X_0 \,.

A limit over a diagram of this form is called a sequential limit/directed limit.

Created on August 25, 2012 23:33:08 by Urs Schreiber (82.113.106.150)