Template:Selected anniversaries/October 6
1784: Mathematician, engineer, cartographer, economist, and politician Charles Dupin born. In 1826 he will create the earliest known choropleth map.
1831: Mathematician, philosopher, and academic Richard Dedekind born. He will make important contributions to abstract algebra (particularly ring theory), algebraic number theory and the definition of the real numbers.
1851: Mechanical soldier Clock Head co-founds the town of Periphery.
1866: Inventor Reginald Fessenden born. He will perform pioneering experiments in radio, including the use of continuous waves and the early—and possibly the first—radio transmissions of voice and music.
1902: "Fightin'" Bert Russell agrees to fight three rounds of bare-knuckled boxing at World Peace Conference.