16 lines
337 B
Text
16 lines
337 B
Text
import logic
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constant nat : Type.{1}
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constant int : Type.{1}
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constant of_nat : nat → int
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coercion of_nat
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constant nat_add : nat → nat → nat
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constant int_add : int → int → int
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infixl `+` := int_add
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infixl `+` := nat_add
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print "================"
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constant tst (n m : nat) : @eq int (of_nat n + of_nat m) (n + m)
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check tst
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exit
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