4f2e0c6d7f
The new command provides a uniform way to set declaration attributes. It replaces the commands: class, instance, coercion, multiple_instances, reducible, irreducible
27 lines
447 B
Text
27 lines
447 B
Text
import logic
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namespace experiment
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constant nat : Type.{1}
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constant int : Type.{1}
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constant nat_add : nat → nat → nat
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infixl `+` := nat_add
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constant int_add : int → int → int
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infixl `+` := int_add
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constant of_nat : nat → int
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attribute of_nat [coercion]
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constants a b : nat
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constants i j : int
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definition c1 := a + b
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theorem T1 : c1 = nat_add a b :=
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eq.refl _
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definition c2 := i + j
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theorem T2 : c2 = int_add i j :=
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eq.refl _
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exit
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