leanprover / lean3

Lean Theorem Prover
http://leanprover.github.io/
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Typo in Tutorial #1959

Closed kevinsullivan closed 6 years ago

kevinsullivan commented 6 years ago

Prerequisites

Description

Tutorial (3.3) says, "Indeed, in dependent type theory (and in Lean), the Pi construction is fundamental, and α → β is just notation for Π x : α, β when β does not depend on α."

I believe it should say, "Indeed, in dependent type theory (and in Lean), the Pi construction is fundamental, and α → β is just notation for Π x : α, β when β does not depend on x."

Steps to Reproduce

See tutorial.

Expected behavior: [What you expect to happen]

See above.

Actual behavior: [What actually happens]

See above.

Reproduces how often: [What percentage of the time does it reproduce?]

100%

Versions

You can get this information from copy and pasting the output of lean --version, please include the OS and what version of the OS you're running.

Additional Information

Any additional information, configuration or data that might be necessary to reproduce the issue.

digama0 commented 6 years ago

I think this issue is for https://github.com/leanprover/theorem_proving_in_lean/issues .

kevinsullivan commented 6 years ago

Oops, thanks. Moving. --Kevin