# Start a new discussion

## Not signed in

Want to take part in these discussions? Sign in if you have an account, or apply for one below

## Site Tag Cloud

Vanilla 1.1.10 is a product of Lussumo. More Information: Documentation, Community Support.

• CommentRowNumber1.
• CommentAuthorUrs
• CommentTimeSep 3rd 2012

expanded chain homotopy: added the usual non-commuting diagram, a discussion of chain homotopy equivalence and slightly expanded the description in terms of left homotopy

• CommentRowNumber2.
• CommentAuthorTim_Porter
• CommentTimeSep 3rd 2012

With reference to the italics in mathematics discussion, on my Browser (Firefox on a Mac) the ordinary downarrows are slanting left in that diagram. Is this the case on all browsers?

• CommentRowNumber3.
• CommentAuthorUrs
• CommentTimeSep 3rd 2012
• (edited Sep 3rd 2012)

It’s the same for me, yes. Many of these commuting diagrams on the $n$Lab don’t look well on my browser (latest Firefox on Windows). All the arrows are tilted.

• CommentRowNumber4.
• CommentAuthorUrs
• CommentTimeSep 3rd 2012

Oh, sorry. I guess Andrew just fixed this. Or something. It looks good now.

• CommentRowNumber5.
• CommentAuthorTim_Porter
• CommentTimeSep 3rd 2012

That looks much better. It must have been that italics problem that Andrew fixed.

• CommentRowNumber6.
• CommentAuthormattecapu
• CommentTimeSep 12th 2019

Corrected the indexing of the tensor product CxI