You are here

Convergence articles

Displaying 111 - 120 of 659

The work of ten scientists who thought deeply about patterns.
This website contains a complete version of Euclid's Elements, with all the proofs.
If 40 oranges are worth 60 apples, and 75 apples are worth 7 dozen peaches, and 100 peaches are worth 1 box of grapes and three boxes of grapes are worth 40 pounds of pecans, how many peaches can be bought for 100 oranges?
A portrait gallery of mathematicians, mostly taken from the collection at the Dibner Library of the Smithsonian, with permission.
Three equal circumferences with radii 6" are tangent to each other. Compute the area enclosed between them.
Page 8, Images from the Paul Halmos Photograph Collection: Armand Borel, Karol Borsuk, Raoul Bott, William Browder, H. Arlen Brown, and R. Creighton Buck
Page from the table of contents of Robert Recorde's The Grounde of Artes (1543) in which is outlined the first dialogue. This dialogue deals with some of the elements of arithmetic, including the basic operations and the use of the rule of three (or the Golden rule).
A letter to Sam Greitzer, late editor of Arbelos, discussing the derivation of two formulas for calculating pi.
Find two numbers, x and y, such that their sum is 10 and x/y + y/x = 25
A great book from which to learn and teach the subject of relativity.