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Hace 1 día · The mathematical properties of the catenary curve were studied by Robert Hooke in the 1670s, and its equation was derived by Leibniz, Huygens and Johann Bernoulli in 1691. Catenaries and related curves are used in architecture and engineering (e.g., in the design of bridges and arches so that forces do not result in bending moments).
Hace 1 día · Bernoulli's formula is sometimes called Faulhaber's formula after Johann Faulhaber who also found remarkable ways to calculate sums of powers. Faulhaber's formula was generalized by V. Guo and J. Zeng to a q-analog. Taylor series. The Bernoulli numbers appear in the Taylor series expansion of many trigonometric functions and hyperbolic functions.
Hace 1 día · Thieme-Becker ist die gebräuchliche Abkürzung des von Ulrich Thieme und Felix Becker begründeten und von Hans Vollmer fortgesetzten Künstlerlexikons Allgemeines Lexikon der Bildenden Künstler von der Antike bis zur Gegenwart.
