Is there a name for the numbers that make up every other number?

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Crusty

Crusty

Lifer
Sep 30, 2001
12,684
2
81
spidey07 said:
Yep. Real numbers, integers are a subset of real numbers.
Click to expand...

Eh? I'm not sure you understand what a real number is.

0-9 are just characters, just a representation of a number. They also happen to represent the numbers 0-9.
 
Maximilian

Maximilian

Lifer
Feb 8, 2004
12,604
15
81
Would the universe implode if we made a new number? Something after 9 that isnt just a 1 and a 0!
 
SKORPI0

SKORPI0

Lifer
Jan 18, 2000
18,481
2,418
136
Number Sets

Natural, N

Natural numbers are the counting numbers {1, 2, 3, ...} (positive integers) or the whole numbers {0, 1, 2, 3, ...} (the non-negative integers). Mathematicians use the term "natural" in both cases.
Integer, Z

Integers are the natural numbers and their negatives {... −3, −2, −1, 0, 1, 2, 3, ...}. (Z is from German Zahl, "number".)
Rational, Q

Rational numbers are the ratios of integers, also called fractions, such as 1/2 = 0.5 or 1/3 = 0.333... Rational decimal expansions end or repeat. (Q is from quotient.)
Real Algebraic, AR

The real subset of the algebraic numbers: the real roots of polynomials. Real algebraic numbers may be rational or irrational. √2 = 1.41421... is irrational. Irrational decimal expansions neither end nor repeat.
Real, R

Real numbers are all the numbers on the continuous number line with no gaps. Every decimal expansion is a real number. Real numbers may be rational or irrational, and algebraic or non-algebraic (transcendental). π = 3.14159... and e = 2.71828... are transcendental. A transcendental number can be defined by an infinite series.
Real Number Line

RealLine.png

Real Number Venn Diagram

RealVenn.png

N ⊂ Z ⊂ Q ⊂ AR ⊂ R
Complex Number Sets

Imaginary

Imaginary numbers are numbers whose squares are negative. They are the square root of minus one, i = √−1, and all real number multiples of i, such as 2i and i√2.
Algebraic, A

The roots of polynomials, such as ax3 + bx2 + cx + d = 0, with integer (or rational) coefficients. Algebraic numbers may be real, imaginary, or complex. For example, the roots of x2 − 2 = 0 are ±√2, the roots of x2 + 4 = 0 are ±2i, and the roots of x2 −4x +7 = 0 are 2±i√3.
Complex, C

Complex numbers, such as 2+3i, have the form z = x + iy, where x and y are real numbers. x is called the real part and y is called the imaginary part. The set of complex numbers includes all the other sets of numbers. The real numbers are complex numbers with an imaginary part of zero.
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DrPizza

DrPizza

Administrator Elite Member Goat Whisperer
Mar 5, 2001
49,601
167
111
www.slatebrookfarm.com
0,1,2,3,4,5,6,7,8,9 are referred to as digits or numerals if that's what you're referring to, OP. And, since I think that's what you mean (notice he included them all, and didn't put a ellipsis at the end), then those who say he failed 6th grade math are guilty themselves.

However, a finite number of digits cannot be used to express a lot of numbers in mathematics because they're irrational. Likewise, some numbers are simply too large to be able to be expressed with digits. (see Graham's number: http://en.wikipedia.org/wiki/Graham%27s_number)

Likewise, there are other symbols/operators that give other numbers their values.
 
Maximilian

Maximilian

Lifer
Feb 8, 2004
12,604
15
81
Thank you SKORPI0, i have learned something :awe:

Heres my new number, or rather my new natural number:

scRjE.png


I call it max after its creator. Please use it for the power of good!
 
lord_emperor

lord_emperor

Golden Member
Nov 4, 2009
1,380
1
0
Folk etymologies

Some folk etymologies argue that the original forms of these symbols indicated their value through the number of angles they contained,[14] however there is no proof of any such origin.
Click to expand...

I find this funny, because the proof is right there in the characters themselves.
 
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