On 02/06/2018 03:14 PM, Waldek Hebisch wrote:
> It is best to do defaulting of left/right recip to recip just in
> one place,

OK. I understand that wish.

> For left/right recip correct
> condtion seem to be a bit tricky, so we probably need extra
> attribute say TwoSidedRecip.  Then we need to set TwoSidedRecip
> in CommutativeStar, DivisionRing, finite rank algebra and other
> relevant places.

Oh... let me sleep this over. At first sight, it looks a bit heavy to
me, to introduce a new category just for this purpose.

> Anyway, the patch below amond other adds 'leftRecip' to Fraction(Integer):
                          ^^^^^

What is "amond"?

Ralf

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