2014-01-01 21:52:25 +00:00
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Import Int.
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2013-09-04 03:39:54 +00:00
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Eval | -2 |
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(*
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Unfortunately, we can't write |-2|, because |- is considered a single token.
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It is not wise to change that since the symbol |- can be used as the notation for
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entailment relation in Lean.
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*)
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Eval |3|
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Definition x : Int := -3
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Eval |x + 1|
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Eval |x + 1| > 0
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Variable y : Int
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Eval |x + y|
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Show |x + y| > x
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2013-12-19 05:18:45 +00:00
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SetOption pp::notation false
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2013-09-04 03:39:54 +00:00
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Show |x + y| > x
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Show |x + y| + |y + x| > x
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