Concurrent means happening at the same time. Concurrency, concurrent, or concurrence may refer to:
Law
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Concurrence
In Western jurisprudence, concurrence (also contemporaneity or simultaneity) is the apparent need to prove the simultaneous occurrence of both ("guilty action") and ("guilty mind"), to constitute a crime; except in crimes of strict liability ...
, in jurisprudence, the need to prove both ''actus reus'' and ''mens rea''
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Concurring opinion (also called a "concurrence"), a legal opinion which supports the conclusion, though not always the reasoning, of the majority.
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Concurrent estate, a concept in property law
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Concurrent resolution, a legislative measure passed by both chambers of the United States Congress
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Concurrent sentence
In law, a sentence is the punishment for a crime ordered by a trial court after conviction in a criminal procedure, normally at the conclusion of a trial. A sentence may consist of imprisonment, a fine, or other sanctions. Sentences for mul ...
s, in criminal law, periods of imprisonment that are served simultaneously
Computing
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Concurrency (computer science), the property of program, algorithm, or problem decomposition into order-independent or partially-ordered units
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Concurrent computing
Concurrent computing is a form of computing in which several computations are executed '' concurrently''—during overlapping time periods—instead of ''sequentially—''with one completing before the next starts.
This is a property of a syst ...
, the overlapping execution of multiple interacting computational tasks
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Concurrence (quantum computing) In quantum information science, the concurrence is a state invariant involving qubits.
Definition
The concurrence is an entanglement monotone (a way of measuring entanglement) defined for a mixed state of two qubits as:
: \mathcal(\rho)\equiv\max ...
, a measure used in quantum information theory
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Concurrent Computer Corporation
Concurrent Computer Corporation was an American computer company, in existence from 1985 to 2017, that made real-time computing and parallel processing systems. Its products powered a variety of applications including process control, simulators, ...
, an American computer systems manufacturer
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Concurrent DOS
Multiuser DOS is a Real-time operating system, real-time multi-user multi-tasking operating system for IBM Personal Computer, IBM PC-compatible microcomputers.
An evolution of the older Concurrent CP/M-86, Concurrent DOS and Concurrent DOS 386 ...
, Digital Research's multiuser multitasking operating system, with "Concurrent" once being their registered trademark
* Concurrence, a presentation program designed by
Lighthouse Design
Lighthouse Design Ltd. was an American software company that operated from 1989 to 1996. Lighthouse developed software for NeXT computers running the NeXTSTEP operating system. The company was founded in 1989 by Alan Chung, Roger Rosner, Jonatha ...
for NeXTSTEP which inspired Keynote by Apple
Engineering
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Concurrent engineering
Concurrent engineering (CE) or concurrent design and manufacturing is a work methodology emphasizing the parallelization of tasks (i.e. performing tasks concurrently), which is sometimes called simultaneous engineering or integrated product develo ...
, an engineering methodology emphasizing the parallelisation of tasks
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Concurrent Design Facility, an assessment center of the European Space Agency using concurrent engineering methods
Other
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Concurrent lines
In geometry, lines in a plane or higher-dimensional space are said to be concurrent if they intersect at a single point. They are in contrast to parallel lines.
Examples
Triangles
In a triangle, four basic types of sets of concurrent lines are ...
, in geometry, multiple lines or curves intersecting at a single point
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Concurrency (road)
A concurrency in a road network is an instance of one physical roadway bearing two or more different route numbers. When two roadways share the same right-of-way, it is sometimes called a common section or commons. Other terminology for a concurre ...
, an instance of one physical road bearing two or more different route numbers
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Concurrent (Easter)
A concurrent was the weekday of 24 March in the Julian calendar counted from , regarding as Sunday. It was used to calculate the Julian Easter during the Middle Ages. It was derived from the weekday of the first day of the Alexandrian calendar d ...
, the weekday of 24 March Julian used to calculate Julian Easter
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Concurrent enrolment In the United States, dual enrollment (DE), also called concurrent enrollment, programs allow students to be enrolled in two separate, academically related institutions. Generally, it refers to high school students taking college or university cours ...
, a process in the US allowing students to enroll at a university or college while still in high school
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