It is well known that the Hilbert tranformation and the conjugate function operator restricted to even (odd) functions define bounded linear operators on weighted $L ...

As a cutting-edge subject in the cross research field, solid high-order harmonics not only provide a new strategy for high-efficiency, wide energy spectrum, short pulse light source, but also can be ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Zero is a weird number. Well, ...