Comment by erdos2

You asked for a source: I provided one. A request for an explanation is something else. I'll give you another source instead: http://www2.owen.vanderbilt.edu/Mike.Shor/courses/GTheory/do...

As for $35, it pains me to mention libraries...it was a source, with a link so that you could see something about the book.

I can't say I know of a single public intellectual or professional philosopher who takes Rand seriously. I do know of a well-regarded mathematical logician who does, but this is an aberration.