What's the real number sign with a + under it?

  • Thread starter Cinitiator
  • Start date
  • Tags
    Sign
In summary, the real number sign with a + under it typically represents positive or non-negative real numbers, often used as a power rather than a subscript. It can be found in various contexts, such as in mathematics and economics.
  • #1
Cinitiator
69
0

Homework Statement


What does the real number sign with a + under it mean? Check the example below.

Homework Equations


http://upload.wikimedia.org/wikibooks/en/math/8/d/3/8d380fa4b673b84ddb613bed8ab8f189.png [Broken]


The Attempt at a Solution


Tried Googling, but didn't find anything.
 
Last edited by a moderator:
Physics news on Phys.org
  • #2
I've never seen this notation, but i'd say it means the positive real numbers.
 
  • #4
It typically means positive real numbers, or occasionally non-negative real numbers depending on the context and how lazy the author is
 
  • #5
Just to mention it... normally you find it (I found it...) as a power rather than as a subscript!
 

1. What does the real number sign with a + under it mean?

The real number sign with a + under it, also known as the plus sign, is a mathematical symbol used to indicate addition. This means that the numbers on either side of the plus sign should be added together to find the total value.

2. How do you write the real number sign with a + under it?

To write the real number sign with a + under it, you can use the plus sign key on a keyboard (+) or use the plus symbol in a word processing or mathematical software program. You can also draw the symbol by hand, starting with a horizontal line and adding a vertical line through the center.

3. Is the real number sign with a + under it the same as the equal sign?

No, the real number sign with a + under it is not the same as the equal sign. The equal sign (=) is used to show that two quantities are equivalent, whereas the plus sign (+) is used to show addition.

4. Can the real number sign with a + under it be used with negative numbers?

Yes, the real number sign with a + under it can be used with negative numbers. When a negative number is placed after the plus sign, it indicates subtraction rather than addition. For example, 5 + (-3) means 5 minus 3, which equals 2.

5. What is the difference between the real number sign with a + under it and the minus sign?

The real number sign with a + under it indicates addition, while the minus sign (-) indicates subtraction. The plus sign is usually used to show that two numbers are being added together, while the minus sign is used to show that one number is being subtracted from another.

Similar threads

  • Calculus and Beyond Homework Help
Replies
5
Views
1K
  • Calculus and Beyond Homework Help
Replies
5
Views
1K
  • Calculus and Beyond Homework Help
Replies
5
Views
5K
  • Calculus and Beyond Homework Help
Replies
2
Views
806
  • Calculus and Beyond Homework Help
Replies
1
Views
2K
  • Calculus and Beyond Homework Help
Replies
2
Views
1K
  • Calculus and Beyond Homework Help
Replies
1
Views
1K
  • Calculus and Beyond Homework Help
Replies
4
Views
5K
  • Calculus and Beyond Homework Help
Replies
8
Views
3K
  • Calculus and Beyond Homework Help
Replies
7
Views
4K
Back
Top