The S² valued wave map flow on a Lorentzian domain ℝ × ∑, where ∑ is any flat two-torus, is studied. The Cauchy problem with initial data tangent to the moduli space of holomorphic maps ∑ → S² is ...

Cash flow analysis shows adiabatic compressed air storage is viable for 10–100 h applications Scientists in the United Kingdom have compiled a new database of adiabatic compressed air energy storage ...