My Math Forum How do you write the real number symbol?

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 July 23rd, 2015, 09:03 AM #1 Senior Member   Joined: Dec 2012 From: Hong Kong Posts: 853 Thanks: 311 Math Focus: Stochastic processes, statistical inference, data mining, computational linguistics How do you write the real number symbol? I'm genuinely curious about this. How does one write the symbol denoting the set of real numbers on paper? Does one need to write two overlapping Rs? Thanks.
 July 23rd, 2015, 09:06 AM #2 Global Moderator     Joined: Nov 2006 From: UTC -5 Posts: 16,046 Thanks: 938 Math Focus: Number theory, computational mathematics, combinatorics, FOM, symbolic logic, TCS, algorithms Generally I write a normal capital R with an extra stroke to the left of the stem. Thanks from 123qwerty
 July 23rd, 2015, 04:15 PM #3 Global Moderator   Joined: May 2007 Posts: 6,820 Thanks: 722 There are no had and fast rules. Use whatever symbol you want, but make sure you define it first.
 July 23rd, 2015, 04:47 PM #4 Math Team     Joined: Jul 2011 From: Texas Posts: 3,016 Thanks: 1600 $\displaystyle \mathbb{R}$
 July 24th, 2015, 09:04 AM #5 Senior Member   Joined: Dec 2012 From: Hong Kong Posts: 853 Thanks: 311 Math Focus: Stochastic processes, statistical inference, data mining, computational linguistics Thanks guys. I'll go by CRGreathouse's method since it's easy to write that.
 July 24th, 2015, 02:38 PM #6 Senior Member   Joined: Jan 2014 From: The backwoods of Northern Ontario Posts: 392 Thanks: 71 It's even simpler to use a bolded R for the set of real numbers... just as a bolded Q is used for the set of rational numbers.
July 24th, 2015, 03:43 PM   #7
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Quote:
 Originally Posted by Timios It's even simpler to use a bolded R for the set of real numbers... just as a bolded Q is used for the set of rational numbers.
But when your writing style always looks bolded, it's hard to distinguish them.

July 27th, 2015, 05:47 PM   #8
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Quote:
 Originally Posted by 123qwerty I'm genuinely curious about this. How does one write the symbol denoting the set of real numbers on paper? Does one need to write two overlapping Rs? Thanks.
The symbol for real numbers is R

July 27th, 2015, 07:21 PM   #9
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Quote:
 Originally Posted by KOSTAS NIKOLAKOPOULOS The symbol for real numbers is R
Isn't that the symbol for rational numbers?

 July 27th, 2015, 09:01 PM #10 Math Team   Joined: Nov 2014 From: Australia Posts: 689 Thanks: 244 Real numbers is $\mathbb{R}$. Rational numbers is $\mathbb{Q}$.

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