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A tilde in front of a single quantity can mean "approximately", "about" [14] or "of the same order of magnitude as." In written mathematical logic, the tilde represents negation: "~p" means "not p", where "p" is a proposition.
:= means "from now on, is defined to be another name for ." This is a statement in the metalanguage, not the object language. This is a statement in the metalanguage, not the object language. The notation a ≡ b {\displaystyle a\equiv b} may occasionally be seen in physics, meaning the same as a := b {\displaystyle a:=b} .
Tilde (symbol) Tilde (diacritic) Wave dash Double tilde ̃: Tilde (diacritic) Circumflex, Grave: Combining Diacritical Marks, Diacritic ™ Trademark symbol: Registered trade mark _ Underscore | Vertical bar: also known as a 'pipe' / Virgule: Slash: Virgule (disambiguation)
3. Between two groups, may mean that the first one is a proper subgroup of the second one. > (greater-than sign) 1. Strict inequality between two numbers; means and is read as "greater than". 2. Commonly used for denoting any strict order. 3. Between two groups, may mean that the second one is a proper subgroup of the first one. ≤ 1.
Greek letters (e.g. θ, β) are commonly used to denote unknown parameters (population parameters). [3]A tilde (~) denotes "has the probability distribution of". Placing a hat, or caret (also known as a circumflex), over a true parameter denotes an estimator of it, e.g., ^ is an estimator for .
The straight or curved macron above a letter means that an n or m is missing. A remnant can be seen in Spanish where an n with a tilde is used for . In Visigoth texts before the 9th century, however, a dot is placed above the macron to indicate m, and the same mark without a dot meant n. The line with a dot became the general mark after the 9th ...
HTML and XML provide ways to reference Unicode characters when the characters themselves either cannot or should not be used. A numeric character reference refers to a character by its Universal Character Set/Unicode code point, and a character entity reference refers to a character by a predefined name.
R rotunda Variant of r [9] ᴙ: Small capital reversed R Nonstandard IPA /ʢ/ cf. Cyrillic: Я я: FUT [2] ꭆ Small capital R with right leg Teuthonista [4] ɹ ʴ: Turned R IPA /ɹ/ IPA voiced alveolar approximant: ᴚ: Small capital turned R Obsolete IPA /χ/ FUT [2] ʁ ʶ: Small capital inverted R IPA /ʁ/ IPA voiced uvular fricative ꭉ R ...