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anonymous

  • one year ago

will post a problem

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  1. anonymous
    • one year ago
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    When is B aneuclidean topology on R?

  2. anonymous
    • one year ago
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    @zzr0ck3r

  3. anonymous
    • one year ago
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    is it when B=(a,b):a,bϵR,a=b

  4. anonymous
    • one year ago
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    ?

  5. anonymous
    • one year ago
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    @zzr0ck3r

  6. zzr0ck3r
    • one year ago
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    `\(B=\{(a,b) | a,b\in R, a<b\}\)` This will give \(B=\{(a,b) | a,b\in R, a<b\}\)

  7. zzr0ck3r
    • one year ago
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    so put \ before { and }

  8. anonymous
    • one year ago
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    ok thanks sir

  9. zzr0ck3r
    • one year ago
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    that was the problem with those last questions, I could not tell where the parentheses were.

  10. zzr0ck3r
    • one year ago
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    Eclidean topolgy is just the real line as you know it. The B is for basis

  11. zzr0ck3r
    • one year ago
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    Euclidean Topology*

  12. anonymous
    • one year ago
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    ok. when is B the lower limit on R

  13. zzr0ck3r
    • one year ago
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    I don't understand the question

  14. zzr0ck3r
    • one year ago
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    oh the lower limit topology?

  15. zzr0ck3r
    • one year ago
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    Then \(\mathcal{B}=\{[a, b)| a,b\in \mathbb{R}, a<b\}\)

  16. anonymous
    • one year ago
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    yes

  17. anonymous
    • one year ago
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    is that it?

  18. anonymous
    • one year ago
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    or \[B_d\](x,ϵ)⊃⋃

  19. anonymous
    • one year ago
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    ??????

  20. zzr0ck3r
    • one year ago
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    sorry eating :)

  21. zzr0ck3r
    • one year ago
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    the first one

  22. anonymous
    • one year ago
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    ?

  23. zzr0ck3r
    • one year ago
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    correct

  24. zzr0ck3r
    • one year ago
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    we just answered this

  25. anonymous
    • one year ago
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    i think the first one

  26. zzr0ck3r
    • one year ago
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    correct

  27. anonymous
    • one year ago
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    Projections of X x X

  28. anonymous
    • one year ago
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    projection X x Y

  29. anonymous
    • one year ago
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    which of them sir?

  30. anonymous
    • one year ago
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    or projections of X^2 x Y^2

  31. zzr0ck3r
    • one year ago
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    sec, let me read

  32. zzr0ck3r
    • one year ago
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    should that say \(\pi_2:X\times Y\rightarrow Y\)?

  33. anonymous
    • one year ago
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    yes sir, typo error

  34. zzr0ck3r
    • one year ago
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    these maps are projection maps from \(X\times Y\)

  35. anonymous
    • one year ago
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    ok. thanks . i have more, can i ask please?

  36. zzr0ck3r
    • one year ago
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    Sure, but open a new question. This one takes to long to sroll and find things. It is cluttered.

  37. zzr0ck3r
    • one year ago
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    also, I am going into town soon, but I will be back in a few hours.

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spraguer (Moderator)
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