Hi guys,

Sat i have two set A = {1,2}, P = {1,2,3}, are the two formulations below equivalent:

and

I am not sure if i can distinguish.

Thanks

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- Dec 6th 2010, 08:39 PMleoemilSet notation, basic question
Hi guys,

Sat i have two set A = {1,2}, P = {1,2,3}, are the two formulations below equivalent:

and

I am not sure if i can distinguish.

Thanks - Dec 6th 2010, 08:45 PMtopspin1617
Yes, the two conditions

and

are equivalent. Taking an arbitrary pair, one from A and one from P, is the same as choosing any element from A and any element from P.