Mathematical equations have shaped our understanding of the universe, and these nine have played a key role in changing the world.

It also has plenty of calculators and worksheets to help those entitled to Social Security benefits. We pulled together some of our favorites. Keep this list handy the next time you’re sifting ...

Linear algebra, eigenvalues, FFT, Bessel, elliptic, orthogonal polys, geometry, NURBS, numerical quadrature, 3D transfinite interpolation, random numbers, Mersenne ...