2014-07-22 16:43:18 +00:00
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definition Prop [inline] : Type.{1} := Type.{0}
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2014-06-18 20:55:48 +00:00
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2014-07-22 16:43:18 +00:00
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inductive or (A B : Prop) : Prop :=
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2014-08-22 22:46:10 +00:00
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or_intro_left : A → or A B,
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or_intro_right : B → or A B
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2014-06-18 20:55:48 +00:00
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check or
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check or_intro_left
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check or_rec
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