2014-08-24 19:58:48 -07:00
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import logic
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2014-09-03 16:00:38 -07:00
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open bool
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2014-07-23 08:22:53 -07:00
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definition set {{T : Type}} := T → bool
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2014-10-21 15:27:45 -07:00
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infix `∈` := λx A, A x = tt
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2014-07-23 08:22:53 -07:00
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2014-09-03 16:00:38 -07:00
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check 1 ∈ (λ x, tt)
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