16 lines
No EOL
409 B
Text
16 lines
No EOL
409 B
Text
import Int.
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eval | -2 |
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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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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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print |x + y| > x
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set_option pp::notation false
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print |x + y| > x
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print |x + y| + |y + x| > x |