Mark Gritter (markgritter) wrote,
Mark Gritter
markgritter

Another Birthday Book, Lack of Errata Bugs Me

I'm reading Julian Havil's "Impossible: Suprising Solutions to Counterintuitive Conundrums" which is pretty fun. I already owned his previous "Nonplussed?".

However, I encountered a pretty significant, if small, error in his definition of Goodstein Sequences. The text says "Gr(n) = { Br(n)-1 for r > 2 }" which doesn't give the desired result. In his terminology, it should be "Gr(n) = Br( Gr-1(n) ) - 1 for r > 2". The sequence feeds each base-bumped (and decremented) number into the next iteration, rather than base-bumping the original number. The latter obviously grows without bound.

I was surprised that not only is there no errata page in his publisher (although I guess this is a "recreational" math text), but neither does Dr. Havil have any contact information on the web. Nor can I find any errata page for the previous volume.
Tags: books, mathematics
Subscribe
  • Post a new comment

    Error

    default userpic

    Your reply will be screened

    Your IP address will be recorded 

    When you submit the form an invisible reCAPTCHA check will be performed.
    You must follow the Privacy Policy and Google Terms of use.
  • 0 comments