On Thu, Jun 23, 2016 at 7:23 PM, Antoon Pardon <antoon.par...@rece.vub.ac.be> wrote: > I don't care. In modern mathematics, zero is usaly defined as the > empty set. The empty set contains nothing, but it isn't nothing > itself. Otherwise the empty set would be the same as the set > containing the empty set, since they both would contain the same, > being nothing.
Zero is *the cardinality of* the empty set. The set containing the empty set has a cardinality of 1. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
