[ refactor ] Algebra.Properties.Semiring.Divisibility
and friends
#2579
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Cosmetic (non-
breaking
): : simplifiesimport
s and some proofs. Lifted out from #2573NB. Could go further (but then would be
breaking
):NonTrivial
to mean1# ≉ 0#
(rather than0# ≉ 1#
as used currently), and refactor to useNonTrivial
as hypothesis (Blast! clashes withData.Nat.Base.NonTrivial
with a different semantics...)Relation.Binary.Construct.Interior.Symmetric
, and exploit the generic properties of such relations