Recent content by zendani

Thank you Matterwave my answer for find unit ball is wrong? so i exactly can't recognize that unit ball will get which shape?

thank you Balce2 i want it for a paper about friction

Thank you qusar987 so unit ball for d(x,y) = max |xi-yi| => B(x,1)= {y in x | maxi |xi-yi|<1} maxi |xi-yi|<1 => |xi-yi|<1 => -1 <xi-yi<1 => 0<= xi-yi <1 => maxi (xi-yi)< 1 a circle by radius 1?

thank you Stevel27 and quasar987, i got it stevel, i have (n,1/n) no (1,1/n) so (n, 1/n) diverges and (1,1/n) converges...

if anybody knows about such a sequence, book or reference, please write here because i want to learn it Thank you

I don't know anything about Unitary Ball what is a Unitary ball? how make a unitary ball consider to a metric (example: d(x,y) = max |xi-yi|)

Thanks Micromass

If A U B = A and A n B = A can we say A = B ? 1: A U B = A => B C A => B n A = B 2: A n B = A => A C B => A U B = B 1,2 => A=B

if we have a sequence (n,1/n) , n E N , the sequence converges? lim n = infinite lim 1/n = 0 (1,1),(2,1/2),(3,1/3)...(n,1/n) it is convergent and divergent?!

thank you micromass and bacle2 now, is there a constant that isn't continous?

Hi the image of an open set by a function continues IS an open set? i think that if we have a constant function , the image of an open set does not have to be open.

(-1) is inside ln ln((1-e^-x)^-1) thank u

Dears (ln(1-e^(-x))^(-1))^2=? thankyou very much http://www.uploadgeek.com/share-69EF_4A600E7F.html