lean2/tests/lean/sig2.lean
Leonardo de Moura a2d2e36f04 refactor(frontends/lean): remove notation for creating tuples
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-10 09:03:42 -08:00

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check sig x : Nat, x > 0
check pair 10 20
check pair 10 true
check pair true 20
check pair true 20 : Bool # Nat
check pair true true
check pair true true : Bool Bool
variable a : Nat
axiom Ha : 1 ≤ a
definition NZ : Type := sig x : Nat, 1 ≤ x
check NZ
check pair a Ha : NZ
check pair true 20 : Nat # Nat
check pair true 20 : Bool # Bool