Questions tagged [bugs]

A software bug is an error, flaw or fault in a computer program or system that causes it to produce an incorrect or unexpected result, or to behave in unintended ways.

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Correcting formally verified results

John Harrison spoke once about checking the results of some peer reviewed mathematical research: he has found bugs in the proofs and even a faulty theorem, which he corrected by giving a formal proof. ...
Gergely's user avatar
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1 vote
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Code obtained from printing a definition from the Lean 3.46 equation compiler does not type check. Why doesn't it, and how can I fix it?

In the example below, the fibonacci function is defined via the Lean equation compiler. However, there seems to be a problem with the code that is obtained from running ...
ttbo's user avatar
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3 votes
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How do you know a formal proof (mechanized within a Proof Assistant) really is correct?

Running a proof assistant as a user and focusing on a given formal proof, how can one assert that there are no unexpected errors or "bugs" that could invalidate the provided proof? More ...
taylor.2317's user avatar
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