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By Bogdan Grechuk, Ashleigh Wilcox. Bogdan Grechuk is an associate professor at the University of Leicester, UK. His research includes many areas of pure and applied mathematics. He is also interested in the exposition of mathematics to undergraduate and high school students.
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.