30 lines
604 B
Text
30 lines
604 B
Text
precedence `+`:65
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namespace nat
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variable nat : Type.{1}
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variable add : nat → nat → nat
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infixl + := add
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end nat
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namespace int
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open nat (nat)
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variable int : Type.{1}
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variable add : int → int → int
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infixl + := add
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variable of_nat : nat → int
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coercion of_nat
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end int
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open int
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open nat
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variables n m : nat
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variables i j : int
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check n + m
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check i + j
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check i + n
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check i + n + n + n + n + n + n + n + n + n + n + n +
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n + n + n + n + n + n + n + n + n + n + n + n +
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n + n + n + n + n + n + n + n + n + n + n + n +
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n + n + n + n + n + n + n + n + n + n + n + n
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