Usage of the Empty Set.

[Willem F Esterhuyse]

I've read a paper wherein there is a definition and formula amounting to "there exist some y an element of the Empty Set". This is nonsensical because Empty Set = {x: x not= x}. there is no "y not= y".

[swansont]

2 hours ago, Willem F Esterhuyse said:

I've read a paper

What paper? Link to it, or quote a larger section, so that people can read the context of the statement.

[wtf]

9 hours ago, Willem F Esterhuyse said:

I've read a paper ...

Did it come on a roll?

[Willem F Esterhuyse]

Ha, ha.

I can't quote it because it is in non ASCII letters. Paper: "The Foundations of Mathematics.pdf" at www.academia.edu.

I was mistaken, it does not say that.

Edited February 13, 2023 by Willem F Esterhuyse

[Sensei]

4 minutes ago, Willem F Esterhuyse said:

I can't quote it because it is in non ASCII letters.

You can press "print screen" and attach image instead.