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Maelstrom Posted 11 years ago
Vocabulary

A mathematical sign

Isn't there a symbol that indicates one value equaling to another?It is an equal sign with a dot both above and below that sign.

What is it supposed to be called?
  

Top answer

Perhaps you mean =: and := x := y or y =: x means x is defined to be another name for y , under certain assumptions taken in context. (Wikipedia) The sign is not named in the article in which I found it, and I hope you understand its explanation.

— Rover_KE

  • Perhaps you mean =: and := x := y or y =: x means x is defined to be another name for y , under certain assumptions taken in context.
  • (Wikipedia) The sign is not named in the article in which I found it, and I hope you understand its explanation.
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6 Answers
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Perhaps you mean =: and :=

x := y or y =: x means x is defined to be another name for y, under certain assumpti
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":=" is the assignment operator in some programming langagues and numerical software packages. What it usually does is assign a value to a variable (not necessarily a numerical value). For example, x := 10 means that x will be stored as a variable, and its value will be 10 (until it is changed to something else).
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maelstrom Isn't there a symbol that indicates one value equaling to another?It is an equal sign with a dot both above and below that sign. What is it supposed to be called?
There is another symbol, ?, which on the face of it more closely matches your description. Unicode defines it as "GEOMETRICALLY EQUAL TO", and Wikipedia redirects it to
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Thank you for your reply but I actually mean the sign that indicates a VALUE's rough estimate.
For example those decimal numbers with a lot of digits after the decimal point.

(BTW. what are those numbers called? I mean the umbrella term, not the specifically defined irrational numbers or imaginaries)

Thanks for your help in advance:)!
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maelstromThank you for your reply but I actually mean the sign that indicates a VALUE's rough estimate.
Do you mean the "approximately equal to" sign? The symbol I am most familiar with is ˜, but Wikipedia lists all of the following too:

?, ?, ~, ? ? (ht
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GPY maelstromThank you for your reply but I actually mean the sign that indicates a VALUE's rough estimate.Do you mean the "approximately equal to" sign? The symbol I am most familiar with is ˜, but Wikipedia lists all of the following too:?, ?, ~, ? ? (http://en.wikipedia.o
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