Hyper Simple Sets

'Sup /sci/. I'm in kind of a bind right now. I have a midterm tomorrow and I really need to know what hyper-simple sets are. Can anyone help me?

they are really really simple sets.

Like, really fucking unbelievably simple. Barely any elements at all. Practically a negative number of goddamn elements, except that that would actually not be simple.

Not even motherfucking empty-set is hyper-simple, that's how simple you need to go, to get hyper-simple. Woooooo-wee.

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hurr