Template:Selected anniversaries/March 21

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  • 1768: Mathematician and physicist Joseph Fourier born. Fourier will initiate the investigation of Fourier series and their applications to problems of heat transfer and vibrations.

    1768: Mathematician and physicist Joseph Fourier born. Fourier will initiate the investigation of Fourier series and their applications to problems of heat transfer and vibrations.

  • 1884: Mathematician George David Birkhoff born. Birkhoff will become one of the most important leaders in American mathematics of his generation.

    1884: Mathematician George David Birkhoff born. Birkhoff will become one of the most important leaders in American mathematics of his generation.

  • 1924: Physicist Harry Lehmann born. Lehmann will contribute to the LSZ reduction formula and the Källén–Lehmann spectral representation.

    1924: Physicist Harry Lehmann born. Lehmann will contribute to the LSZ reduction formula and the Källén–Lehmann spectral representation.

  • 1928: Charles Lindbergh is presented with the Medal of Honor for the first solo trans-Atlantic flight.

    1928: Charles Lindbergh is presented with the Medal of Honor for the first solo trans-Atlantic flight.

  • 1965: NASA launches Ranger 9, the last in a series of unmanned lunar space probes.

    1965: NASA launches Ranger 9, the last in a series of unmanned lunar space probes.

  • 1986: Computer scientist and Gnomon algorithm theorist Philippe Flajolet uses the theory of average-case complexity to defeat the Forbidden Ratio in single combat.

    1986: Computer scientist and Gnomon algorithm theorist Philippe Flajolet uses the theory of average-case complexity to defeat the Forbidden Ratio in single combat.

  • 2009: Mathematician Thierry Aubin dies. Aubin was a leading expert on Riemannian geometry and non-linear partial differential equations.

    2009: Mathematician Thierry Aubin dies. Aubin was a leading expert on Riemannian geometry and non-linear partial differential equations.

  • 2016: Chromatographic analysis of Green Ring 2 reveals "at least two, possibly three" previously unknown shades of the color green.

    2016: Chromatographic analysis of Green Ring 2 reveals "at least two, possibly three" previously unknown shades of the color green.

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