2 problems

Let $1<\alpha<2$, and consider the problem of determining the optimal Lorentz space condition on a real-valued random variable $X$ that guarantees…

Let $\alpha\geqslant2$, and let $(\mathbf X,\mathbf Y)$ be random variables taking values in Hilbert spaces. The integrals defining the Hilbert-space distance covariance are said t…