Algebraic Topology by Allen Hatcher (copyright 2002, 978-0-521-79540-1)

By Allen Hatcher.

Publisher: Cambridge University Press.

Online text: math.uchicago.edu/~farb/algtop2023/Hatcher.pdf

The inspected PDF carries copyright 2002; the publisher front matter separately records first publication in 2001 and a fourteenth printing in 2015.

Cited passages: Algebraic Topology, §2.2, p. 146, definition of Euler characteristic and Theorem 2.44; Algebraic Topology, §2.2, p. 146, homotopy-type independence immediately before Theorem 2.44.