13 Facts About Joseph Madachy

Joseph Steven Madachy was a research chemist, technical editor and recreational mathematician.

Joseph Madachy was the lead editor of Journal of Recreational Mathematics for nearly 30 years and then served as editor emeritus.

Joseph Madachy was owner, publisher and editor of its predecessor, Recreational Mathematics Magazine, which appeared from 1961 to 1964.

Joseph Madachy became interested in recreational mathematics after reading Eugene Northrop's 1944 book, Riddles in Mathematics.

Joseph Madachy moved to Dayton, Ohio, and worked for Mound Laboratories.

Joseph Madachy made original contributions to the field of recreational mathematics.

From February 1961 to 1964 Joseph Madachy published the bimonthly Recreational Mathematics Magazine.

Joseph Madachy authored several books on recreational mathematics, including Mathematics on Vacation, Madachy's Mathematical Recreations and Mathematical Diversions.

Joseph Madachy served as the literary agent for Dmitri Borgmann's Language on Vacation.

Joseph Madachy worked with polyominoes, pentominos, prime numbers, and amicable numbers.

Joseph Madachy worked developing mathematical concepts such as cryptarithmetic, used in cyber security applications.

Joseph Madachy made contributions to Fibonacci series and narcissistic numbers and devised puzzles using Fibonacci numbers.

Joseph Madachy retired from editing Journal of Recreational Mathematics in 2000.