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A well-known equality featuring the equal sign. The equals sign (British English) or equal sign (American English), also known as the equality sign, is the mathematical symbol =, which is used to indicate equality in some well-defined sense.
U+2245 ≅ APPROXIMATELY EQUAL TO (≅, ≅) U+2248 ≈ ALMOST EQUAL TO (≈, ≈, ≈, ≈, ≈, ≈) Different from; Different from: U+2242 ≂ MINUS TILDE: Related; See also: U+2249 ≉ NOT ALMOST EQUAL TO U+003D = EQUALS SIGN U+2243 ≃ ASYMPTOTICALLY EQUAL TO
A wavy equals sign (≈, approximately equal to) is sometimes used to indicate rounding of exact numbers, e.g. 9.98 ≈ 10. This sign was introduced by Alfred George Greenhill in 1892. Ideal characteristics of rounding methods include: Rounding should be done by a function. This way, when the same input is rounded in different instances, the ...
In botanical nomenclature, the triple bar denotes homotypic synonyms (those based on the same type specimen), to distinguish them from heterotypic synonyms (those based on different type specimens), which are marked with an equals sign. In chemistry, the triple bar can be used to represent a triple bond between atoms.
In "text mode" of the LaTeX typesetting language a tilde diacritic can be obtained using, e.g., \~{n}, yielding "ñ". A stand-alone tilde can be obtained by using \textasciitilde or \string~ . In "math mode" a tilde diacritic can be written as, e.g., \tilde{x}. For a wider tilde \widetilde can be used.
When followed by a wavy horizontal line, this symbol indicates an extended, or running, trill. In music up to the time of Haydn or Mozart the trill begins on the upper auxiliary note. [9] In percussion notation, a trill is sometimes used to indicate a tremolo .
A ⊂ B {\displaystyle A\subset B} may mean that A is a proper subset of B, that is the two sets are different, and every element of A belongs to B; in formula, A ≠ B ∧ ∀ x , x ∈ A ⇒ x ∈ B {\displaystyle A eq B\land \forall {}x,\,x\in A\Rightarrow x\in B} . ⊆. A ⊆ B {\displaystyle A\subseteq B}
Sine waves occur often in physics, including wind waves, sound waves, and light waves, such as monochromatic radiation. In engineering, signal processing, and mathematics, Fourier analysis decomposes general functions into a sum of sine waves of various frequencies, relative phases, and magnitudes. When any two sine waves of the same frequency ...
The symbol "≈" (wavy equal, Equals_sign#Approximately_equal) is used to detnote euqality between terms (in some unspecified domain) in First Order Logic with Equality.
The wave dash is similar to, but not the same as, the tilde character ( U+FF5E ～ FULLWIDTH TILDE ), which is often used interchangeably with it. The vertical wave dash () is not currently included in Unicode, but there is a similar symbol available called the wavy line ( U+2307 ⌇ WAVY LINE ).
