Reviews ordinary differential equations, including solutions by Fourier series. Physical derivation of the classical linear partial differential equations (heat, wave, and Laplace equations). Solution ...

Includes updates and/or revisions. Mastering algebra is widely considered the gateway to higher mathematics and college readiness, but new studies question whether low-performing students benefit from ...

The last dimension of Keller's conjecture has been proven using a computer algorithm. The conjecture involves the way hypercubes in different dimensions share sides when tiled. The proof is ...