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 Jul2 awarded Curious May17 awarded Popular Question Sep21 awarded Custodian Aug2 accepted Is this a function? Aug2 comment Is this a function? I understand now, thank you. Aug2 comment Is this a function? Book of Proof by Richard Hammack. Chapter 12.1, question #12. Aug2 asked Is this a function? Aug1 revised How many equivalence classes does $R$ have? Improved formatting Aug1 comment How many equivalence classes does $R$ have? We never learned to make diagrams of equivalence classes, sadly. Thanks for your explanation though. Aug1 revised How many equivalence classes does $R$ have? Updated answer Aug1 asked How many equivalence classes does $R$ have? Aug1 comment Is this function bijective? Thank you Andre and Rick, I understand it much better now. Aug1 accepted Is this function bijective? Aug1 comment Is this function bijective? N = {1,2,3,4...} Aug1 asked Is this function bijective? Jul24 accepted Prove my induction (Golden Ratio) Jul24 comment Prove my induction (Golden Ratio) It took me awhile to figure out what you wanted me to do, but I think I got it now. Thanks so much! Jul23 comment Prove my induction (Golden Ratio) I am trying to prove that it is, in fact, divisible by $\sqrt{5}$ for all n. If you do the Base Case where n=1, it would end up being 1. I am trying to prove that this works for n+1 also. Jul23 comment Prove my induction (Golden Ratio) Trying to prove by induction, saying that it would still be divisible by sqrt(5) when n+1 Jul23 revised Prove my induction (Golden Ratio) deleted 75 characters in body