Recent content by dhillon

oh ok sorry i missed that, i'll try, thanks for the help, i was trying since morning but I am not sure that's the thing, i'll keep trying though, do you know how to work this out by any chance? because I am soo stuck :( , thank you

hey thanks for trying to help, I truthfully have no idea on how to do this, part a) k is an element of natural number e.g 1,2,3,4... part b) x is an element of integers e.g -3,-2,0,1,2,3... if this has helped please let me know

URGENT HELP PLEASEEEE, a question on set theory Homework Statement the question is: Prove that these sets have cardinality aleph-nought:(there is two 2 prove) (a) {1/(2^k) : k∈ℕ} (b) {x∈ℤ : x >= -5} im not sure how to work this out, please help on this, i did ask on a previous...

thanks for the help, I am soo stressed with this and i got 6 other questions which I am still working on, I've done 9 and this is in for monday, please help, thanks

set theory question please help it urgent, thank you Homework Statement 1. Homework Statement Let A, B and C be any sets inside our universal set U. Decide whether each of the following statements is true or false. Justify your answers by giving a proof or a counterexample as...

ok sorry, basically for the part a) i think that with the diagrams drawn and the higlighted part of it mean that shows that the two diagrams are not in any way related. so if in the first part (1st diagram)elements are only in set A which is in Set B also and in the 2nd diagram no elements are...

hey thanks for reply to the post, im not sure on how to answer this question but i was reading a book called 'mathematical communication' and i was reading about the use of venn diagrams and so to try and answer this question i tried applying that concept. I was unsure if this was right any...

urgent help needed please, thanks Homework Statement Let A, B and C be any sets inside our universal set U. Decide whether each of the following statements is true or false. Justify your answers by giving a proof or a counterexample as appropriate. a) A⊆B if and only if B'⊆A' b) If...

also could you help me with this ..i'm trying it and have spent the whole day reading about it but its not that clear to me ..thank you fibonacci sequence which is defined by F1=1, F2=2, Fn= Fn-1 + Fn-2 for all n>=3 . anyone know how to prove F3n is even for all n?

the question is: Prove that these sets have cardinality aleph-nought:(there is two 2 prove) (a) {1/(2^k) : k∈ℕ} (b) {x∈ℤ : x >= -5} once again thank you, i hope the question makes sense more

does anyone know how you go about proving a set has cardinality, I am not sure where to start, and I am attemting the 2nd one one thanks once again

thank you soooo much ...i'm reading through the working out now

also does anyone know the fibonacci sequence which is defined by F1=1, F2=2, Fn= Fn-1 + Fn-2 for all n>=3 . anyone know how to prove F3n is even for all n?? thanks again

n = any integer. prove that if n is odd then n^2 - 1 is divisble by 8 i was thinking of finding a contrapositive, not sure what to do thanks for your help guys