Robert P. Munafo, 2000 Jan 24.
math. In set theory, any mathematical object that can be considered as belonging to a set. The definition depends on what type of set theory is being discussed.
From the Mandelbrot Set Glossary and Encyclopedia, by Robert Munafo, (c) 1987-2018. Mu-ency index
This page was written in the "embarrassingly readable" markup language RHTF, and was last updated on 2018 Feb 04. s.11