Word: euler
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Elkies’ paper examined a series of numbers discovered by influential 18th century mathematician Leonhard Euler...
...combinatorial problem involving ‘up-down permutations’ such as 2 1 7 3 4 < 10—the number of ways to distribute the numbers 1 through 10 to make this work is 50521, same as the numerator of the 10th Euler formula...
...falls by the wayside, what then? No other common mathematical constant has such holiday potential. Euler's constant e (2.71828...) would be blocked by the arbitrary constraints of the calendar; it could be neither Feb. 71 nor Feb. 7 at 1:82 p.m. The same goes for the Golden Ratio, 1.618... There will never be an i Day, and although we will have an Aleph-0 Day, it won't come for quite some time...
DIED. Ulf von Euler, 78, groundbreaking Swedish physiologist who in the 1930s discovered prostaglandins, the remarkable hormones used in birth control pills, and who was co-winner of the 1970 Nobel Pri/e in Physiology for his work in detecting noradrenaline, a key neurotransmitter that controls such involuntary actions as the heartbeat and the body's response to stress; of arterial disease; in Stockholm. Von Euler's research led to the identification of a number of so-called transmitter substances, including polypeptides, which appear to be the agents that deliver messages of pain to the brain...
When Swedish Chemist Sune Bergström started to do research on prostaglandin in 1947, almost nothing was known about the hormone-like substance, which had been discovered barely a decade earlier by his compatriot, Ulf S. von Euler. Even the name of the substance was based on the false assumption that it originates in the prostate gland. Over the next 35 years, with Bergström leading the way, researchers discovered that prostaglandin (PG) is not one chemical but a whole family of substances found in almost every tissue of the body. PGS, it was learned, are extraordinarily versatile...