lean2/tests/lean/run/coe7.lean
Leonardo de Moura 4f2e0c6d7f refactor(frontends/lean): add 'attribute' command
The new command provides a uniform way to set declaration attributes.
It replaces the commands: class, instance, coercion, multiple_instances,
reducible, irreducible
2015-01-24 20:23:21 -08:00

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import logic
namespace experiment
constant nat : Type.{1}
constant int : Type.{1}
constant of_nat : nat → int
attribute of_nat [coercion]
theorem tst (n : nat) : n = n :=
have H : true, from trivial,
calc n = n : eq.refl _
... = n : eq.refl _
end experiment