3 problems

Let regular black holes mean black-hole solutions of general relativity with nonsingular centers, and let non-Maxwellian fields denote electromagnetic fields governed by nonlinear…

Hidden identity conjecture. The hypergeometric function has the closed form

Let $p$ and $q$ be the matrices defined by … and let $Q$ be determined perturbatively by … Here ${\cal S}_{p,q}$ denotes the operation that reorders each term of a power-series exp…