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Comments on Remark 1.1.2.5

Go back to the page of Remark 1.1.2.5.

Comment #2014 by XD on

I think we need f to be epimorphism rather than monomorphism for the converse. For example, we just take f to be the inclusion \Delta^{n-1}\to \Delta^n.

Comment #2015 by XD on

Sorry I have made a mistake for the definition of degeneracy, please delete my previous comment.

There are also:

  • 13 comment(s) on Chapter 1: The Language of $\infty $-Categories
  • 7 comment(s) on Section 1.1: Simplicial Sets
  • 2 comment(s) on Subsection 1.1.2: Degeneracy Operators

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