The doorbell rang and the lady of the house discovered a workman, complete with tool chest, on the front door. “Lady,” he announced, “I’m the piano tuner.”
The lady exclaimed, “Why, I didn’t send for a piano tuner.”
The man replied, “I know, but your neighbors did.”
Fourier seriesIn 1807, Fourier's memoir On the Propagation of Heat in Solid Bodies, was read to the Paris Institute, an important mathematical work, containing what we now call Fourier series, which he had worked upon since around 1804. A committee consisting of Lagrange, Laplace, Monge and Lacroix was set up to report on the work. Although now highly regarded, at the time, this memoir caused controversy. Lagrange and Laplace objected to Fourier's expansions of functions as trigonometrical series (the Fourier series). It was not until 1822 that his prize winning essay Théorie analytique de la chaleur was published by the Académie des Sciences. Jean Delambre, Secretary to the mathematical section, had arranged for the printing before he died. |
