anonymous
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Mathematics
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anonymous
  • anonymous
will post a problem
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
When is B aneuclidean topology on R?
anonymous
  • anonymous
anonymous
  • anonymous
is it when B=(a,b):a,bϵR,a=b

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anonymous
  • anonymous
?
anonymous
  • anonymous
zzr0ck3r
  • zzr0ck3r
`\(B=\{(a,b) | a,b\in R, a
zzr0ck3r
  • zzr0ck3r
so put \ before { and }
anonymous
  • anonymous
ok thanks sir
zzr0ck3r
  • zzr0ck3r
that was the problem with those last questions, I could not tell where the parentheses were.
zzr0ck3r
  • zzr0ck3r
Eclidean topolgy is just the real line as you know it. The B is for basis
zzr0ck3r
  • zzr0ck3r
Euclidean Topology*
anonymous
  • anonymous
ok. when is B the lower limit on R
zzr0ck3r
  • zzr0ck3r
I don't understand the question
zzr0ck3r
  • zzr0ck3r
oh the lower limit topology?
zzr0ck3r
  • zzr0ck3r
Then \(\mathcal{B}=\{[a, b)| a,b\in \mathbb{R}, a
anonymous
  • anonymous
yes
anonymous
  • anonymous
is that it?
anonymous
  • anonymous
or \[B_d\](x,ϵ)⊃⋃
anonymous
  • anonymous
??????
zzr0ck3r
  • zzr0ck3r
sorry eating :)
zzr0ck3r
  • zzr0ck3r
the first one
anonymous
  • anonymous
?
zzr0ck3r
  • zzr0ck3r
correct
zzr0ck3r
  • zzr0ck3r
we just answered this
anonymous
  • anonymous
i think the first one
zzr0ck3r
  • zzr0ck3r
correct
anonymous
  • anonymous
Projections of X x X
anonymous
  • anonymous
projection X x Y
anonymous
  • anonymous
which of them sir?
anonymous
  • anonymous
or projections of X^2 x Y^2
zzr0ck3r
  • zzr0ck3r
sec, let me read
zzr0ck3r
  • zzr0ck3r
should that say \(\pi_2:X\times Y\rightarrow Y\)?
anonymous
  • anonymous
yes sir, typo error
zzr0ck3r
  • zzr0ck3r
these maps are projection maps from \(X\times Y\)
anonymous
  • anonymous
ok. thanks . i have more, can i ask please?
zzr0ck3r
  • zzr0ck3r
Sure, but open a new question. This one takes to long to sroll and find things. It is cluttered.
zzr0ck3r
  • zzr0ck3r
also, I am going into town soon, but I will be back in a few hours.

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