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Convergence articles

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Oracle for Rent

An oracle ordered a prince to build a sacred building, whose space would be 400 cubits, the length being 6 cubits more than the width, and the width 3 cubits more than the height. Find the dimensions of the building.

Lucky Seven

There is a number which when divided by 2, or 3, or 4, or 5, or 6, always has a remainder of 1, and is truly divisible by 7. It is sought what is the number.

Two Equal Parts of a Triangle

The three sides of a triangular piece of land, taken in order, measure 15, 10, and 13 chains respectively.

Another Numbers Game

Determine a number having remainders 2, 3, and 2 when divided by 3, 5, and 7 respectively.

Right Triangle

Given a right triangle where you know the length of the base and the sum of the perpendicular side and the hypotenuse...
 

Extending al-Karaji's Work on Sums of Odd Powers of Integers
An extension of Al-Karaji's formula for the sum of the cubes by a 19th century Turkish author and journal editor
A History of Mathematics: Brief Version
A brief version of the author's well-known history of mathematics text.
On Triangles, by Regiomontanus
On Triangles, by Regiomontanus (Johannes M�ller) (1436-1476), written in 1464 but not published until 1533.
Milestones of Mathematics
Two posters illustrating the major milestones in the history of mathematics, from the first ideas of "number" to the proof of Fermat's Last Theorem.
Proportionality in Similar Triangles: A Cross-Cultural Comparison

A comparison of the Greek and Chinese approach to the idea of similarity.

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