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Convergence articles

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A circle is inscribed in an isosceles trapezoid. Find the relationship of the radius to the sides.
A historically minded textbook designed to teach real analysis by considering some of the problems faced by 19th century mathematicians.
The Fundamental Theorem of Calculus is presented in the version of Scottish mathematician James Gregory -- without the use of limits.
A small selection of Euler's works, explained by a master expositor.
History of Maya calendars, including the modified base 20 number system used in them
This is from a letter of June, 1695 in which Leibniz is discussing differentiation with Johann Bernoulli. The work in which these letters appear is the Virorum Celeberr. Got. Gul. Leibnitii et Johann Bernoulli Commercium Philosophicum et Mathematica, originally published in 1740.
In a square box that contains 1000 marbles, how many will it take to reach across the bottom of the box in a straight row?
A survey of the mathematics education of cadets in the first century after the founding of the U.S. Military Academy.
A fellow said that when he counted his nuts by twos, threes, fours, fives and sixes, there was still one left over; but when he counted them by sevens they came out even. How many did he have?
In a circle whose circumference is 60 units, a chord is drawn forming a segment whose sagitta is 2 units. What is the length of the chord?