Hertz potential and currents in the language of differential forms.
Hertz potentials and singular multipolar sources.
A subtle identity for the Green function of the laplacian operator.
Interaction terms for monopoles and dipoles.
Ann and Bob share a secret, and Eve uses a different eavesdropping method.
Ann and Bob share a secret, but Eve is eavesdropping.
Ann and Bob share a secret with no eavesdropper.
A short note on the eigen-basis for the single-qubit Hadamard gate.
Some weird properties of the matrices that transform to Bell bases.
A surprising property of a certain 2-by-2 matrix.