Chiefs receiver Xavier Worthy returned to practice Friday. Worthy missed Wednesday’s practice with concussion-like symptoms that landed him in concussion protocol. Further testing, though, revealed ...

Equilibrium problems and variational inequalities form a crucial mathematical framework for modelling systems where multiple agents or factors interact under specific constraints. An equilibrium ...

Daniel Liberto is a journalist with over 10 years of experience working with publications such as the Financial Times, The Independent, and Investors Chronicle. Robert Kelly is managing director of ...