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14 de feb. de 2017 · This symbol (in English) informally [4] means "approximately", "about", or "around", such as "~30 minutes before", meaning "approximately 30 minutes before". [5] [6] It can mean "similar to", [7] including "of the same order of magnitude as", [4] such as: "x ~ y" meaning that x and y are of the same order of magnitude.
The preferred way of symbolizing "approximately equal to" is to use the ≈ symbol, the ~ symbol, or (in some cases) the ≅ symbol (see note 2). However : • ≅ and ≈ are symbols that are not easy for people to enter in email, forums, etc. (no standardized keyboard entry method).
In mathematical notation, what are the usage differences between the various approximately-equal signs "≈", "≃", and "≅"? The Unicode standard lists all of them inside the Mathematical Operators Block. ≈ : ALMOST EQUAL TO (U+2248) ≃ : ASYMPTOTICALLY EQUAL TO (U+2243) ≅ : APPROXIMATELY EQUAL TO (U+2245) notation. approximation. Share. Cite.
- The notations $\cong$ and $\simeq$ are not totally standardized. Both are usually used for "isomorphic" which means "the same in whatever context w...
- $\approx$ is used mostly for the approximate (read: calculated) value of a mathematical expression like $\pi \approx 3.14$ In LaTeX it is coded...
- ≈ is for numerical data, homeomorphism ≃ is for homotopy equivalence ≅ is for isomorphism, congruence, etc These are just my own conventions.
- In my work "=" is the identity of a number so it states an equivalence. 1=1, 2x=10 ie x =5. The approximation sign "≈" I use for decimal approximat...
- As long as the category theory is concerned: The symbol ≅ is used for isomorphism of objects of a category, and in particular for isomorphism of ca...
Circa is Latin for "around" or "about". It is often used to show when something approximately happened. It is often shortened to c., ca., ca or cca. An encyclopedia entry may begin with circa in the date of birth, for example: "Genghis Khan (c. 1162 – August 18, 1227)".
≈. All symbols. The approximately symbol (≈) is used in math to indicate that two expressions are approximately equal to each other. Typically, the symbol is used in an expression like this: π ≈ 3.14. In plain language, this means that the constant π (pi) is approximately equal to the value 3.14.
11 de ago. de 2011 · Because "circa" is used to mean approximately in dates and measures, people would naturally use it to mean approximately even outside of dates and measures, partly due to ignorance of the fact that "circa" is used only for dates and measures, and partly out of inconsideration of the rules of usage.
Circa (del latín circa, «alrededor de»), [1] abreviado como c. o ca., significa «hacia» o «alrededor de», [2] se usa en la bibliografía científica para expresar que, aunque se carece de la certeza necesaria para proporcionar un valor único, existen otros datos fehacientes que permiten asegurar que el hecho o dato que se ...
