Thank you, Prof. Velleman, for the note. We fixed the book's title in the post.
Note: The title of the book is How To Prove It, not How To Solve It.
-- you have earned Featured Contributor Badge Your exceptional post has been selected for our editorial column Staff Picks http://wolfr.am/StaffPicks and Your Profile is now distinguished by a Featured Contributor Badge and is displayed on the Featured Contributor Board. Thank you!
