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

• CommentRowNumber1.
• CommentAuthorUrs
• CommentTimeSep 11th 2012
• (edited Sep 11th 2012)

touched the formatting in congruence, fixed a typo on the cartesian square, added a basic example

• CommentRowNumber2.
• CommentAuthorUrs
• CommentTimeNov 9th 2014
• (edited Nov 9th 2014)

A kind soul pointed out to me by email that there was a typo in the third clause of the Definition (an exchange $q_1 \leftrightarrow q_2$ either in the diagram or in the equation following it). I have fixed it.

In this vein, I have added a brief remark relating to internal categories, which could be much expanded on.

I also fixed the formatting (lack of whitespace may get the bullet lists mixed up).