n twenty short biographical chapters it is sketched how the role of mathematics in the American society and its educational system has evolved from the early 19th till the late 20th century. That is one chapter per decade, but the life span of the individual mathematicians is of...See more

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On a line, one can either move 53 places right or 40 places left. Using only these moves, possible to end up one place to the right of start? (One place left?) [Answer is YES by Euclidean Algorithm. But what's a beautiful, accessible general way to see this for any gcd(a,b)=1?]

More from Republic of Math

On a line, one can either move 53 places right or 40 places left. Using only these moves, possible to end up one place to the right of start? (One place left?) [Answer is YES by Euclidean Algorithm. But what's a beautiful, accessible general way to see this for any gcd(a,b)=1?]