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Convergence articles

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A man is walking across a bridge, when a boat passes under the bridge.How rapidly are the boat and the pedestrian separating after the boat passes under the bridge?
A certain bishop ordered that 12 loaves be divided among his clergy.
A translation of one of the earliest European mathematical texts to use the Hindu-Arabic number system.
A brief history of mathematics aimed at college students with little technical knowledge of mathematics.
History of Maya calendars, including the modified base 20 number system used in them
A collection of articles in the history of mathematics that appeared in journals of the Mathematical Association of America over the past 90 years.
A man has four creditors. To the first he owes 624 ducats; to the second, 546; to the third, 492; and to the fourth 368.
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.
A rifle ball is fired through a three-inch plank, the resistance of which causes an unknown constant retardation of its velocity.
This is a collection of plates that Leonardo da Vinci created to illustrate De divina proportione of Luca Pacioli.