12186. Proposed by Anatoly Eydelzon, University of Texas at Dallas, Richardson, TX. For v = (x1, ..., *n) in R", let || v ||, = (Li-1 |x;')' and || v || sc = max sizn *;; these are the usual p-norm and co-norm on R. For what v does the series 00 (l, lll-) p= converge? 12186. Proposed by Anatoly Eydelzon, University of Texas at Dallas, Richardson, TX. For v = (x1, ..., *n) in R", let || v ||, = (Li-1 |x;')' and || v || sc = max sizn *;; these are the usual p-norm and co-norm on R. For what v does the series 00 (l, lll-) p= converge