Document Type

Article

Publication Date

9-1-2011

Abstract

This paper gives an account of the contributions of Melvin Henriksen and John Isbell to the abstract theory of f-rings and formally real f-rings, with particular attention to the manner in which their work was framed by universal algebra. I describe the origins of the Pierce-Birkhoff Conjecture and present some other unsolved problems suggested by their work. © 2011 Elsevier B.V.

Publication Source (Journal or Book title)

Topology and its Applications

First Page

1768

Last Page

1773

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