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modal operator for “it is possible that”, (in most modal logics it is defined as “¬ ¬”, “it is not necessarily not”).
For the similar-looking operator named parallel, see ∥. Floor function : if x is a real number, ⌊ x ⌋ {\displaystyle \lfloor x\rfloor } is the greatest integer that is not greater than x . Ceiling function : if x is a real number, ⌈ x ⌉ {\displaystyle \lceil x\rceil } is the lowest integer that is not lesser than x .
R is a programming language for statistical computing and data visualization. It has been adopted in the fields of data mining, bioinformatics and data analysis. [9] The core R language is augmented by a large number of extension packages, containing reusable code, documentation, and sample data. R software is open-source and free software.
This following list features abbreviated names of mathematical functions, function-like operators and other mathematical terminology. This list is limited to abbreviations of two or more letters (excluding number sets). The capitalization of some of these abbreviations is not standardized – different authors might use different capitalizations.
Div , (with operator symbol ) is a vector operator that measures a vector field's divergence from or convergence towards a given point. Curl , (with operator symbol ∇ × {\displaystyle \nabla \!\times } ) is a vector operator that measures a vector field's curling (winding around, rotating around) trend about a given point.
The rotation operators R x (θ), R y (θ), R z (θ), the phase shift gate P(φ) [c] and CNOT are commonly used to form a universal quantum gate set. [20] [d] The Clifford set {CNOT, H, S} + T gate. The Clifford set alone is not a universal quantum gate set, as it can be efficiently simulated classically according to the Gottesman–Knill theorem.
The quantum-mechanical counterparts of these objects share the same relationship: = where r is the quantum position operator, p is the quantum momentum operator, × is cross product, and L is the orbital angular momentum operator. L (just like p and r) is a vector operator (a vector whose components are operators), i.e. = (,,) where L x, L y, L ...
In computer programming, an operator is a programming language construct that provides functionality that may not be possible to define as a user-defined function (i.e. sizeof in C) or has syntax different than a function (i.e. infix addition as in a+b).