When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
"Professor Donald E. Knuth has always loved to solve problems. To use them, a problem is defined declaratively (0) as a set of options, or (1) in Boolean formulae. Happy reading!". --Eiiti Wada, an elder computer scientist, UTokyo.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.