1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Math signs

  1. Mar 21, 2012 #1
    [itex]\oplus[/itex] what does this symbol mean. I was confused in special relativity when notes say u' [itex]\oplus[/itex] v [itex]\neq[/itex] u' + v.
  2. jcsd
  3. Mar 21, 2012 #2


    User Avatar
    Science Advisor
    Homework Helper

    Hi Lizwi! :smile:
    What is the context?

    Sometimes mathematicians run out of symbols, and recycle a symbol they think nobody wants! :biggrin:

    My guess is that this is the addition of relative-velocities formula, and that this author is simply using it as a shorthand for that form of addition.

    (in other words: it's his symbol for multiplication in the group of relative-velocities)
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook