Is this set a variation of Russell's paradox?(adsbygoogle = window.adsbygoogle || []).push({});

[tex]M = \{x : x \notin M \}[/tex]

I understand this formulation a lot more than

[tex]R = \{S : S \notin S\}[/tex]

because I don't understand how, for example, 1 is a member of itself. Is 1 a set? Are all numbers sets?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Set M of all elements not in M

**Physics Forums | Science Articles, Homework Help, Discussion**