Encyclopedia > October 20

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October 20

October 20 is the 293rd day of the year (294th in leap years) in the Gregorian Calendar, with 72 days remaining.





See Also: January, February, March, April, May, June, July, August, September, October, November, December

October 19 - October 21 - November 20 - September 20 - more historical anniversaries

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Conformal map

... and therefore the shape of small figures. A function f is conformal if and only if it is holomorphic and its derivative is everywhere non-zero. (In other words, ...