We begin the chapter by discussing homotopy pushouts and homotopy pullbacks in the first two sections. These are analogues in the homotopy category of pushouts and pullbacks. They have many applications in homotopy theory and are necessary for the proofs in Section 6.4. That section contains the statement and proof of many of the major theorems of classical homotopy theory.
CITATION STYLE
Arkowitz, M. (2011). Homotopy Pushouts and Pullbacks (pp. 195–231). https://doi.org/10.1007/978-1-4419-7329-0_6
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