J Austral Math Soc Ser A 55 pp232--237, 1993.
(Received 11 January 1991; revised 10 October 1991)
Some new results concerning tubular sets are presented, with applications to the convergence of the Polya algorithm in the contexts of simultaneous approximation and approximation of multivariate functions by univariate functions. (The Polya algorithm constructs a best uniform approximation from the limit, as p ® ¥, of best Lp approximations.
1991 AMS Subject Classification: 41A30, 41A63
Last Modified: Fri Jan 10 8:53:40 2003