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1985 single by Eddy Raven
"Operator, Operator" (also titled "Heart on the Line (Operator, Operator)") is a country music song co-written and recorded by Larry Willoughby, a cousin
Operator,_Operator
This is a list of operators in the C and C++ programming languages. All listed operators are in C++ and lacking indication otherwise, in C as well. Some
Operators_in_C_and_C++
The following is a list of current and former operators of BAe 146 and Avro RJ operators. Pionair Australia Bahrain Defence Force Bahrain Royal Flight
List_of_BAe_146_operators
Property determining how equal-precedence operators are grouped
programming language theory, the associativity of an operator is a property that determines how operators of the same precedence are grouped in the absence
Operator_associativity
Pakistani telecommunications company
Limited (PMCL), doing business as Jazz, is a Pakistani mobile network operator headquartered in Islamabad. It is currently led by chief executive officer
Jazz (mobile network operator)
Jazz_(mobile_network_operator)
Feature of some programming languages
programming, operator overloading, sometimes termed operator ad hoc polymorphism, is a specific case of polymorphism, where different operators have different
Operator_overloading
RMS Titanic wireless operator (1887–1912)
was a British wireless telegraphist, who served as the chief wireless operator aboard RMS Titanic during her ill-fated maiden voyage in April 1912. Before
Jack Phillips (wireless operator)
Jack_Phillips_(wireless_operator)
Set out below is a list of former and current operators of the Airbus A340 airliner. There were 214 Airbus A340 aircraft in commercial service as of
List_of_Airbus_A340_operators
Fictional rogue computer operator
The Bastard Operator From Hell (BOFH) is a fictional rogue computer operator created by Simon Travaglia, who takes out his anger on users (who are "lusers"
Bastard_Operator_From_Hell
In probability theory and ergodic theory, a Markov operator is an operator on a certain function space that conserves the mass (the so-called Markov property)
Markov_operator
Binary operator in computer programming
certain computer programming languages, the Elvis operator, often written ?:, is a binary operator that returns the first operand if its value is logically
Elvis_operator
Function acting on function spaces
In mathematics, an operator is generally a mapping or function that acts on elements of a space to produce elements of another space (possibly and sometimes
Operator_(mathematics)
This is a list of Boeing 707 operators. Chile Chilean Air Force 10th Aviation Group operates two 707-based E-3 Sentry AWACS, with a third in reserve
List_of_Boeing_707_operators
Kind of linear transformation
In functional analysis and operator theory, a bounded linear operator is a special kind of linear transformation that is particularly important in infinite
Bounded_operator
commercial operators of the Boeing 787 Dreamliner. List of Airbus A330 operators List of Airbus A350 operators List of Boeing 767 operators List of Boeing
List_of_Boeing_787_operators
Quantum operator for the sum of energies of a system
In quantum mechanics, the Hamiltonian of a system is an operator corresponding to the total energy of that system, including both kinetic energy and potential
Hamiltonian (quantum mechanics)
Hamiltonian_(quantum_mechanics)
Mathematical tool in quantum physics
In quantum mechanics, a density matrix (or density operator) is a matrix used in calculating the probabilities of the outcomes of measurements performed
Density_matrix
The list of Boeing 717 operators lists both former and current operators of the aircraft. "Delta Air Lines Annual Report 2025" (PDF). "Hawaiian Airlines
List_of_Boeing_717_operators
Boundary condition for generalized functions
In mathematical analysis, the trace operator extends the notion of the restriction of a function to the boundary of its domain to "generalized" functions
Trace_operator
Government-owned energy system operator for Great Britain
Energy System Operator (NESO) is a government-owned energy system operator for Great Britain, designated as the Independent System Operator and Planner
National Energy System Operator
National_Energy_System_Operator
lists active operators of the aircraft. List of Boeing 777 orders and deliveries List of Boeing 747 operators List of Airbus A350 operators List of Airbus
List_of_Boeing_777_operators
Theory in functional analysis
space H, the compact operators are the closure of the finite rank operators in the uniform operator topology. In general, operators on infinite-dimensional
Spectral theory of compact operators
Spectral_theory_of_compact_operators
Binary operator in computer programming
The null coalescing operator is a binary operator that is part of the syntax for a basic conditional expression in several programming languages, such
Null_coalescing_operator
Online gambling service provider
Philippine offshore gaming operators (POGOs), renamed Internet gaming licensees (IGLs) in October 2023, are firms operating in the Philippines that offer
Philippine offshore gaming operator
Philippine_offshore_gaming_operator
Method of describing higher-order polyhedra
various prefix operations. Conway and Hart extended the idea of using operators, like truncation as defined by Kepler, to build related polyhedra of the
Conway_polyhedron_notation
This is a list of mobile network operators (MNOs) in the United States. The Cellular Telecommunications & Internet Association (CTIA) lists approximately
List of mobile network operators in the United States
List_of_mobile_network_operators_in_the_United_States
Mathematical study of linear operators
mathematics, operator theory is the study of linear operators on function spaces, beginning with differential operators and integral operators. The operators may
Operator_theory
A multiple-system operator (MSO) is an operator of multiple cable or direct-broadcast satellite television systems. A cable system in the United States
List of multiple-system operators
List_of_multiple-system_operators
multi-operator radio access networks (MORANs), also known as radio access network sharing, is a way for multiple mobile telephone network operators to share
Multi-operator radio access network
Multi-operator_radio_access_network
A list of orders, deliveries, and current and previous operators of the Airbus A300 as of June 2025.[needs update] Data of planes that are still in operation
List_of_Airbus_A300_operators
The following is a list of current operators of the Airbus A220 family aircraft in production by Airbus Canada Limited Partnership (ACLP), a joint venture
List_of_Airbus_A220_operators
The following is a list of current and former operators of the Embraer E-Jet family: Libya Sirte Oil Company (Embraer 170/175) Montenegro Government of
List of Embraer E-Jet operators
List_of_Embraer_E-Jet_operators
Mathematical concept
In mathematics, the Gauss–Kuzmin–Wirsing operator is the transfer operator of the Gauss map that takes a positive number to the fractional part of its
Gauss–Kuzmin–Wirsing_operator
Differential operator in mathematics
In mathematics, the Laplace operator or Laplacian is a differential operator given by the divergence of the gradient of a scalar function on Euclidean
Laplace_operator
Call assistance services
Operator assistance refers to service provided by a telephone operator to the calling party of a telephone call. This included telephone calls made from
Operator_assistance
Conjugate transpose of an operator in infinite dimensions
specifically in operator theory, each linear operator A {\displaystyle A} on an inner product space defines a Hermitian adjoint (or adjoint) operator A ∗ {\displaystyle
Hermitian_adjoint
A mobile network operator, also known as a wireless service provider, wireless carrier, cellular company, or mobile network carrier is a provider of wireless
List of mobile network operators in Europe
List_of_mobile_network_operators_in_Europe
727 operators lists both former and current operators of the aircraft. List of operators who purchased or leased aircraft new: List of operators who purchased
List_of_Boeing_727_operators
Set of eigenvalues of a matrix
functional analysis, the spectrum of a bounded linear operator (or, more generally, an unbounded linear operator) is a generalisation of the set of eigenvalues
Spectrum (functional analysis)
Spectrum_(functional_analysis)
The following is a list of current Boeing 757 operators. Former operators of the Boeing 757 are for example: Air Europe America West Airlines American
List_of_Boeing_757_operators
Telecom Regulatory Authority of India (TRAI). Market share of pay DTH operators in India as of 30 September 2024, according to the Telecom Regulatory
List of telecom companies in India
List_of_telecom_companies_in_India
Vector differential operator
Del, or nabla, is an operator used in mathematics (particularly in vector calculus) as a vector differential operator, usually represented by ∇ (the nabla
Del
The following is a list of past and present commercial operators and past military operators of the Lockheed L-1011: Algerian Air Force Royal Jordanian
List of Lockheed L-1011 operators
List_of_Lockheed_L-1011_operators
List of Airbus A320neo family orders List of Boeing 737 operators List of Airbus A220 operators incl. Wizz Air Hungary, Wizz Air Malta and Wizz Air UK
List of Airbus A320 family operators
List_of_Airbus_A320_family_operators
commercial operators of the Airbus A350. There were 632 A350 aircraft in service with 44 operators as of March 20, 2025[update]. The top 10 largest operators are
List_of_Airbus_A350_operators
Type of linear operator on a Banach sapce
In mathematics, more precisely in operator theory, a sectorial operator is a linear operator on a Banach space whose spectrum in an open sector in the
Sectorial_operator
Topics referred to by the same term
The Big Operator may refer to: The Big Operator (1976 film), a 1976 French comedy film The Big Operator (1959 film), a 1959 crime/drama film This disambiguation
The_Big_Operator
list of current commercial operators of the Boeing 747, and any of its variants. These aircraft are listed by airline operators and variant in the following
List_of_Boeing_747_operators
Partial differential operator
In the theory of partial differential equations, a partial differential operator P {\displaystyle P} defined on an open subset U ⊂ R n {\displaystyle U\subset
Hypoelliptic_operator
Function acting on the space of physical states in physics
An operator is a function over a space of physical states onto another space of states. The simplest example of the utility of operators is the study
Operator_(physics)
delivered and 1,457 were in service. The largest operator is Delta Air Lines with 81 aircraft. A list of operators of the Airbus A330, as of April 2026[update]
List_of_Airbus_A330_operators
General-purpose programming language
symbols for arithmetic operators (+, -, *, /), the floor-division operator //, and the modulo operator %. (With the modulo operator, a remainder can be negative
Python_(programming_language)
In operator theory, a Toeplitz operator is the compression of a multiplication operator on the circle to the Hardy space. Let S 1 {\displaystyle S^{1}}
Toeplitz_operator
2017 video game
911 Operator (Polish: Operator Numeru Alarmowego) is a simulation video game developed by Polish studio Jutsu Games and published in 2017 by PlayWay. The
911_Operator_(video_game)
The following is a list of current and former operators of the Airbus A380, the world's largest passenger aircraft. The first flight was on April 27,
List_of_Airbus_A380_operators
Higher-order function Y for which Y f = f (Y f)
with recursive data types, fixed-point operators can be written, but the type of a "useful" fixed-point operator (one whose application always returns)
Fixed-point_combinator
Topics referred to by the same term
Look up operator in Wiktionary, the free dictionary. Operator may refer to: A symbol indicating a mathematical operation Logical operator or logical connective
Operator
Surjective bounded operator on a Hilbert space preserving the inner product
In functional analysis, a unitary operator is a surjective bounded operator on a Hilbert space that preserves the inner product. Non-trivial examples
Unitary_operator
Functional analysis concept
operator on Hilbert space is an extension of the concept of a matrix acting on a finite-dimensional vector space; in Hilbert space, compact operators
Compact operator on Hilbert space
Compact_operator_on_Hilbert_space
Non-profit Independent System Operator serving California
The California Independent System Operator (CAISO) is a non-profit Independent System Operator (ISO) serving California. It oversees the operation of California's
California Independent System Operator
California_Independent_System_Operator
Measure of the "size" of linear operators
mathematics, the operator norm measures the "size" of certain linear operators by assigning each a real number called its operator norm. Formally, it
Operator_norm
A list of orders, deliveries, and current and previous operators of the Airbus A310 as of September 2024[update] "Orders & Deliveries". Airbus. 31 May
List_of_Airbus_A310_operators
In mathematics, Jordan operator algebras are real or complex Jordan algebras with the compatible structure of a Banach space. When the coefficients are
Jordan_operator_algebra
Wireless operator on RMS Republic
September 1884 – 8 December 1959) was a British-American wireless telegraph operator, sailor, and journalist, who best known for being the Marconi wireless
Jack Binns (wireless operator)
Jack_Binns_(wireless_operator)
whereupon Mitsubishi resolved to halt production wholesale. Deliveries and operators sortable, presorted by customer Ord — number of aircraft ordered from
List of Bombardier CRJ operators
List_of_Bombardier_CRJ_operators
Unary operators that add or subtract one from their operand, respectively
Increment and decrement operators are unary operators that increase or decrease their operand by one. They are commonly found in imperative programming
Increment and decrement operators
Increment_and_decrement_operators
Manager of National Electricity Market in Australia
The Australian Energy Market Operator (AEMO) is a public utility organisation that manages gas and electricity markets in Australia. It manages the National
Australian Energy Market Operator
Australian_Energy_Market_Operator
Topic in mathematics
In mathematics, a Hilbert–Schmidt operator, named after David Hilbert and Erhard Schmidt, is a bounded operator A : H → H {\displaystyle A\colon H\to
Hilbert–Schmidt_operator
This is a list of mobile network operators of the Americas. The country has a 127% penetration rate. The country has a 147% penetration rate = 61.2m mobile
List of mobile network operators of the Americas
List_of_mobile_network_operators_of_the_Americas
Operator shifting particles and fields by a certain amount in a certain direction
In quantum mechanics, a translation operator is defined as an operator which shifts particles and fields by a certain amount in a certain direction. It
Translation operator (quantum mechanics)
Translation_operator_(quantum_mechanics)
Topics referred to by the same term
Rotation operator may refer to: An operator that specifies a rotation (mathematics) Three-dimensional rotation operator Two-dimensional rotation operator Rot
Rotation_operator
Performing order of mathematical operations
Common operator notation (for a more formal description) Hyperoperation Logical connective#Order of precedence Operator associativity Operator overloading
Order_of_operations
Symbol connecting formulas in logic
logical connective (also called a logical operator, sentential connective, or sentential operator) is an operator that combines or modifies one or more logical
Logical_connective
Turkmen state owned mobile operator
görnüşli paýdarlar jemgyýeti, lit. 'Golden Age') is the state owned mobile operator in Turkmenistan. The company uses the TM CELL brand as its trade name.
Altyn_Asyr_(mobile_operator)
In operator theory, a bounded operator T on a Banach space is said to be nilpotent if Tn = 0 for some positive integer n. It is said to be quasinilpotent
Nilpotent_operator
Award
The Marine Special Operator Insignia is a badge of the United States Marine Corps. The insignia is awarded to individuals who have completed the MARSOC
Marine Special Operator Insignia
Marine_Special_Operator_Insignia
Topics referred to by the same term
Look up telephone operator in Wiktionary, the free dictionary. Telephone operator may refer to: Switchboard operator, a person who provides assistance
Telephone_operator
Former telephony occupation
telephony, companies used manual telephone switchboards, and switchboard operators connected calls by inserting a pair of phone plugs into the appropriate
Switchboard_operator
Profession that involves the operation of specific equipment or service
studio operator Camera operator Jib (camera) operator Boom operator Dolly grip operator Other Computer operator Network operations center (NOC) operator Crane
Operator_(profession)
Machine learning framework
Neural operators are a class of deep learning architectures designed to learn maps between infinite-dimensional function spaces. Neural operators represent
Neural_operators
Linear operator related to topological vector spaces
nuclear operators are an important class of linear operators introduced by Alexander Grothendieck in his doctoral dissertation. Nuclear operators are intimately
Nuclear_operator
The following is a list of Boeing 737 operators, excluding former operators. The table shows only civil operators with more than 50 Boeing 737: Many countries
List_of_Boeing_737_operators
The following are current and past operators of the Fokker F27: As of August 2022, fewer than 20 Fokker F27 aircraft (Cargo and military variants only)
List_of_Fokker_F27_operators
The following is a list of past and present operators of the Fokker F28 including Fokker F28-0070 (Fokker 70) and Fokker F28-0100 (Fokker 100). By 2019
List_of_Fokker_F28_operators
Topics referred to by the same term
Look up smooth operator in Wiktionary, the free dictionary. Smooth operator or smoothing operator may also refer to: "Smooth Operator" (Sarah Vaughan song)
Smooth operator (disambiguation)
Smooth_operator_(disambiguation)
In number theory, the diamond operators 〈d〉 are operators acting on the space of modular forms for the congruence subgroup Γ1(N), given by the action
Diamond_operator
category of operator spaces includes operator systems and operator algebras. For operator systems, in addition to an induced matrix norm of an operator space
Operator_space
Branch of functional analysis
functional analysis, a branch of mathematics, an operator algebra is an algebra of continuous linear operators on a topological vector space, with the multiplication
Operator_algebra
Elliptic differential operators in geometry mathematics
geometry there are a number of second-order, linear, elliptic differential operators bearing the name Laplacian. This article provides an overview of some
Laplace operators in differential geometry
Laplace_operators_in_differential_geometry
Circulation density in a vector field
In vector calculus, the curl, also known as rotor, is a vector operator that describes the infinitesimal circulation of a vector field in three-dimensional
Curl_(mathematics)
Topics referred to by the same term
Translation operator can refer to these things: Translation operator (quantum mechanics) Shift operator, which effects a geometric translation Translation
Translation_operator
Operator in quantum mechanics
In quantum mechanics, energy is defined in terms of the energy operator, acting on the wave function of the system as a consequence of time translation
Energy_operator
This is a list of operators of the Douglas DC-4, Douglas C-54, Canadair North Star and Douglas R5D. Aden Aden AirwaysNote 1 Algeria Air Algerie Antigua
List of Douglas DC-4 operators
List_of_Douglas_DC-4_operators
of mobile phone operators, see Mobile country codes. This is a list of the world's 25 largest terrestrial mobile phone network operators measured by number
List of mobile network operators
List_of_mobile_network_operators
Topics referred to by the same term
Hilbert operator may refer to: The epsilon operator in Hilbert's epsilon calculus The Hilbert–Schmidt operators on a Hilbert space Hilbert–Schmidt integral
Hilbert_operator
Person responsible for the operations of a radio system
A radio operator (formerly known as wireless operator in British and Commonwealth English), also referred to as radio officer, is a person who is responsible
Radio_operator
Prospective open-access operator
Virgin Trains is a prospective open-access operator proposing to operate services on the West Coast Main Line between London, Birmingham, Liverpool, Rochdale
Virgin Trains (open-access operator)
Virgin_Trains_(open-access_operator)
Linear operator equal to its own adjoint
In mathematics, a self-adjoint operator on a complex vector space V {\displaystyle V} with inner product ⟨ ⋅ , ⋅ ⟩ {\displaystyle \langle \cdot ,\cdot
Self-adjoint_operator
Mobile phone provider in Jersey and Guernsey
Sure by Beyon and formerly Airtel-Vodafone Limited is a mobile network operator located in Jersey and Guernsey (Channel Islands), and regulated by the
Sure (mobile network operator)
Sure_(mobile_network_operator)
Collection of mathematical theories
of a single square matrix to a much broader theory of the structure of operators in a variety of mathematical spaces. It is a result of studies of linear
Spectral_theory
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