The book that I'm reading is saying...(adsbygoogle = window.adsbygoogle || []).push({});

If C is the null collection of subsets of S then,

(Union) C = Null

(Disjoint) C = S

Is this true?

**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!

# Basic Set Theory/Topology

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