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ahmad rummi

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If 1+4=5, 2+5=12 and 3+6=21 then 5+8=?

Philipp Frank

Born 20 Mar 1884; died 22 Jul 1966 at age 82. Austrian-American physicist and mathematician whose theoretical work covered a broad range of mathematics, including variational calculus, Hamiltonian geometrical optics, Schrödinger wave mechanics, and relativity. Frank had a deep and lasting interest in the philosophy of science. In a number of writings, he strove to reconcile science and philosophy and “bring about the closest rapprochement between”them. The 1907 paper he wrote analyzing the law of causality caught Einstein's attention, who in 1912 recommended Frank as his successor as professor of theoretical physics at the German University of Prague. He held that position until 1938, when he moved to Harvard University in the U.S., first as visiting lecturer, but remaining there until retirement in 1954. He wrote on misinterpretations of the Theory of Relativity.«

There is no language wherein a double positive can form a negative

A linguistics professor was lecturing to his English class one day. β€œIn English,” he said, β€œa double negative forms a positive.

In some languages, though, such as Russian, a double negative is still a negative.

However, there is no language wherein a double positive can form a negative.”

A voice from the back of the room piped up, "Yeah, right."

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