
Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion 
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March 30th, 2017, 06:08 AM  #1 
Newbie Joined: Mar 2017 From: leuven Posts: 20 Thanks: 0  What does it mean when there is a little 0 Under R?
First of all, sorry for the huge image. Basically, I saw this huge R symbol with a 0 under it like this. Now I think this means to point out al Real numbers except 0. Though I'm not really sure. Can someone confirm this? Last edited by skipjack; March 30th, 2017 at 05:08 PM. 
March 30th, 2017, 03:16 PM  #2 
Senior Member Joined: Feb 2016 From: Australia Posts: 1,353 Thanks: 464 Math Focus: Yet to find out. 
That's probably right. But it can depend on context. Most authors will introduce and define their symbolic notation. You may have to find the point where it is first introduced. If no introduction, likely it's the most commonly used definition. 