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feat: MulPosMono (WithZero α)
These instances make it possible to argue with multiplication and inequalities in ℤₘ₀ .
These instances are in a bit of a funny place (they need MulPosMono and WithZero) -- any ideas about a better place to put them are welcome.
Could you move that to the folder Algebra.Order.GroupWithZero? Maybe in the file Algebra.Order.GroupWithZero.WithZero?
Thanks!
bors d+
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Thanks all!
bors r+
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