Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Strange Symbol

  1. Nov 28, 2011 #1
    I just was wondering what is the meaning of this symbol
    It is used in the terminology of estimation of norms, I do not know if it is a standard notation, since I did not find anymore explanations. Also I do not know if there is a command to write it directly by LaTeX instead of "\stackrel{\smile}{\frown}".
    Thanks in advance.
  2. jcsd
  3. Nov 28, 2011 #2
    I just have found the symbol, so now the question is
    what does it mean?
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook