-  [JOIN IRC!]
[ a / art / ask / b / calc / cat / cccp / cf / docta / fitfa / fronk / fubot / gent / lego / money / mu / nerd / phi / raeg / regs / reich / sfcsp / speak / tg / timecube / tvav / w / wri / x ] [ tttm ] [ cd / di / do / elit / fetish / h / hor / men / s / y ]

Launch LaTeX Equation Editor

[Return]
Posting mode: Reply
Name
Subject   (reply to 87)
Message
File
Password  (for post and file deletion)
¯\(°_O)/¯
  • Supported file types are: BMP, DOC, EXE, GIF, JPG, PDF, PNG, RAR, TORRENT, ZIP
  • Maximum file size allowed is 1000 KB.
  • Images greater than 400x400 pixels will be thumbnailed.
  • Currently 241 unique user posts. View catalog

  • Blotter updated: 2023-01-12 Show/Hide Show All
File 133192074083.png - (1.02KB , 229x25 , CodeCogsEqn (1).png )
87 No. 87
does any of you know an example of an uncountable metric space that has exactly one accumulation point?
>> No. 93
yup, take R with this metric:

d(x,y)= |x-y|, if (x=1/k for some k in N or if x=0) and (y=1/s for some s or y=0)
and 2 otherwise

zero is the only accumulation point.

Delete post []
Password  
Report post
Reason  

[ a / art / ask / b / calc / cat / cccp / cf / docta / fitfa / fronk / fubot / gent / lego / money / mu / nerd / phi / raeg / regs / reich / sfcsp / speak / tg / timecube / tvav / w / wri / x ] [ tttm ] [ cd / di / do / elit / fetish / h / hor / men / s / y ] [JOIN IRC!]

- kusaba x 0.9.4-gentlebot

DMCA