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    • CommentRowNumber1.
    • CommentAuthorUrs
    • CommentTimeMay 9th 2017
    • (edited May 9th 2017)

    I have added to the References at double negation pointer to Andrej’s exposition:

    which is really good. I have also added this to double negation transformation, but clearly that entry needs some real references, too.

    • CommentRowNumber2.
    • CommentAuthorUrs
    • CommentTimeJun 1st 2017

    I have added a sentence mentioning forcing to the Idea-section at double negation,

    • CommentRowNumber3.
    • CommentAuthorMike Shulman
    • CommentTimeJun 1st 2017

    That is a nice post, but I have to take issue with

    classical logic is happy with lack of negative evidence.

    I would say that what classical logic is happy with is the impossibility of negative evidence, which is rather stronger than the present lack thereof.

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