Tidbits: RIP--Martin Gardner

I note here the death of Martin Gardner, on May 22. I thank him for the many hours of pleasure his writings have given me over the years. He's probably best known as the writer of mathematical brain teasers for Scientific American, but he wrote many books on diverse subjects. In particular, I remember The Annotated Alice (originally published in 1960 by Clarkson Potter. I read the 1990 Norton edition), an annotated edition of Lewis Carroll's Alice's Adventures in Wonderland and Through the Looking Glass; and The Ambidextrous Universe (originally published in 1964, but I read the Third Revised Edition, 1990). RIP