Two mathematicians have proved that a straightforward question—how hard is it to untie a knot?—has a complicated answer.

An idea discarded more than a century ago, conceived by Lord Kelvin when he imagined atoms as knots in the ether, has resurfaced at the heart of a new theory that seeks to explain why the universe is ...

Abstract: Permanent magnet vernier motor (PMVM) possesses the advantage of high torque density. In split-tooth PMVMs, the modulation teeth can be evenly or unevenly distributed on each stator tooth, ...

ESPN's NFL depth charts for the 2025 season are updated throughout the year with the latest news, updates and intel from across the league.

A simple Python package for easily adding magnetic moment vectors (parsed from VASP MAGMOM strings) or general vector arrays to VESTA files. Provides both a command-line interface (CLI) for quick use ...