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  • ...{M|1=r\circ i_A=\text{Id}_A}} where {{M|i_A}} denotes the [[inclusion map (topology)|inclusion map]], {{M|i_A:A\hookrightarrow X}} given by {{M|i_A:a\mapsto x} ===Important theorems===
    2 KB (384 words) - 10:49, 14 December 2016
  • The important lemmas and theorems can be found below the table at the bottom of this document. ====[[Exercises:Saul - Algebraic Topology - 1/Exercise 1.2/Lemmas|Lemmas]]====
    17 KB (3,132 words) - 12:03, 18 January 2017