Closed Subgroups of Products of Reals
David C. Hunt, Sidney A. Morris, Alfred Jacobus Van Der Poorten · Bulletin of the London Mathematical Society · 1975
It is well known [3; Theorem 9.11] that any closed subgroup of a finite product R " of reals is topologically isomorphic to Ra x Zb, where Z denotes the discrete group of integers. For some time the second author has conjectured that an analogous result holds for infinite products of reals. To be precise, the conjecture is that any