May 5, 2009 #2 berkeman Admin Messages 69,110 Reaction score 24,028 skittlez15 said: what does the upside down T mean Welcome to the PF. Can you post a link to an example of the character? What context is it used in?
skittlez15 said: what does the upside down T mean Welcome to the PF. Can you post a link to an example of the character? What context is it used in?
May 6, 2009 #3 Redbelly98 Staff Emeritus Science Advisor Homework Helper Insights Author Messages 12,178 Reaction score 186 skittlez15 said: what does the upside down T mean In geometry, it means "is perpendicular to".