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mathteacher1729 Group TitleBest ResponseYou've already chosen the best response.1
Hi @sasogeek , in every context I've ever seen, null set and empty set mean the same thing. A set with no elements.
 one year ago

sasogeek Group TitleBest ResponseYou've already chosen the best response.0
well we had an exam and the teacher asked which of the following options was a null set. a. b.{} c.{0} d.\(\phi \)
 one year ago

mathteacher1729 Group TitleBest ResponseYou've already chosen the best response.1
Heh. If I were grading this, I'd accept b or d. Perhaps your professor has a preferred notation? Here is the definition from Wolfram Mathworld: http://mathworld.wolfram.com/NullSet.html
 one year ago

sasogeek Group TitleBest ResponseYou've already chosen the best response.0
i chose d though
 one year ago

sasogeek Group TitleBest ResponseYou've already chosen the best response.0
so i guess i'm wrong...? since \(\phi \) denotes {} ?
 one year ago

mathteacher1729 Group TitleBest ResponseYou've already chosen the best response.1
To me, this is splitting hairs. I'd ask your professor if s/he has a preferred notation and go with that for future reference.
 one year ago

sasogeek Group TitleBest ResponseYou've already chosen the best response.0
i asked him during the test and he said it was meant to confuse us but he'll tell us the answer next class so i look forward to questioning him tomorrow since tomorrow is the next lecture :)
 one year ago

mathteacher1729 Group TitleBest ResponseYou've already chosen the best response.1
Strange. Well, to each their own. For me, I try to make definitions and notation as clear as possible from day 1. ;p But that's me.
 one year ago

sasogeek Group TitleBest ResponseYou've already chosen the best response.0
hmmm oh well. i guess i'd never know which answer he's in search of unless he utters it himself. thanks for the help though :) that link helped a bit. and i appreciate your input x
 one year ago
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