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A History of the Calculus of Variations from the 17th through the 19th Century (Paperback, Softcover reprint of the original 1st ed. 1980)
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A History of the Calculus of Variations from the 17th through the 19th Century (Paperback, Softcover reprint of the original 1st ed. 1980)
Series: Studies in the History of Mathematics and Physical Sciences, 5
Expected to ship within 10 - 15 working days
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The calculus of variations is a subject whose beginning can be
precisely dated. It might be said to begin at the moment that Euler
coined the name calculus of variations but this is, of course, not
the true moment of inception of the subject. It would not have been
unreasonable if I had gone back to the set of isoperimetric
problems considered by Greek mathemati cians such as Zenodorus (c.
200 B. C. ) and preserved by Pappus (c. 300 A. D. ). I have not
done this since these problems were solved by geometric means.
Instead I have arbitrarily chosen to begin with Fermat's elegant
principle of least time. He used this principle in 1662 to show how
a light ray was refracted at the interface between two optical
media of different densities. This analysis of Fermat seems to me
especially appropriate as a starting point: He used the methods of
the calculus to minimize the time of passage cif a light ray
through the two media, and his method was adapted by John Bernoulli
to solve the brachystochrone problem. There have been several other
histories of the subject, but they are now hopelessly archaic. One
by Robert Woodhouse appeared in 1810 and another by Isaac Todhunter
in 1861."
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