Isometric embeddings of finite-dimensional p ell _p -spaces over the quaternions
Academic Article
Overview
Identity
Additional Document Info
View All
Overview
abstract
The nonexistence of isometric embeddings (Formulas Presented) with p q is proved. The only exception is q = 2, p 2, in which case an isometric embedding exists if n is sufficiently large, n N(m, p). Some lower bounds for N(m, p) are obtained by using the equivalence between the isometric embeddings in question and the cubature formulas for polynomial functions on projective spaces. Even though only the quaternion case is new, the exposition treats the real, complex, and quaternion cases simultaneously. 2004 American Mathematical Society.