SIAM Journal on Numerical Analysis, Vol. 23, No. 1 (Feb., 1986), pp. 170-177 (8 pages) Dixon's theorem (Math. Programming, 2 (1972), pp. 383-387) states that all variable metric methods in the Broyden ...
Many prominent phenomena originate from geometrical effects rather than from local physics. For example, the 'hairy ball' (HB) theorem asserts that a hairy sphere cannot be combed without introducing ...
Pythagoras' theorem close Pythagoras' theoremPythagoras's theorem applies to right-angled triangles. The area of the square drawn on the hypotenuse is equal to the sum of the squares drawn on the ...