Hello !

> and the
> combinatorial object Permutation which should stay 1-based.

I disagree.

> And yes Nathan, everyone agrees there are some lack of consistency and the
> one you mention about bruhat_inversions and inversions is definitely one.

It is not what I say. What I say is that 1-based  permutations are so
uncompatible with Python's standard that we will never be at peace until we
have 0-based permutations instead. And I take this function as evidence.

> But still, the solution is not to remove 1-based permutation. Maybe I
could
> be more clear, if 1-based permutations were removed, I would have to use
an
> old version of Sage so that I can properly work, or fork it, or
re-introduce
> them. I NEED THEM FOR MY RESEARCH, can you understand that? And I'm
> definitely not the only one.

It makes me weep when I think of all those mathematicians who stopped using
computers because arrays are 0-indexed.

Sorry, but I call that bluff.

Nathann

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