We prove that if A is a non-associative algebra over the field of real
numbers, if there is a norm parallel to.parallel to on A satisfying p
arallel to xy parallel to = parallel to x parallel to parallel to y pa
rallel to for all x, y in A, and if every one-generated subalgebra of
A is finite-dimensional, then A is finite-dimensional. (C) 1997 Academ
ic Press.