Pinellas County is a county located in the state of Florida. As of the 2010 census, the population was 916,542. Its county seat is Clearwater, and its largest city is St. Petersburg. Pinellas County is included in the TampaâSt. PetersburgâClearwater, Florida Metropolitan Statistical Area.
Nowadays, we can say in plain English: A set is a well defined collection of objects. The elements or members of a set can be anything: numbers, characters, words, names, letters of the alphabet, even other sets, and so on.
Answer Wiki. Standard Zermelo-Fraenkel (ZF) set theory defines zero as being the empty set, or in mathematical notation 0 = {}. Though it can also be defined as the set that only contains the empty set, but that's somewhat pointless for this situation (I just thought I'd mention it in case someone else uses this definition instead).