conservation law

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conservation law

n.
Any of various principles, such as the conservation of charge and the conservation of energy, directly related to principles of symmetry and requiring some measurable property of a closed system to remain constant as the system changes.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

conserva′tion law`



n.
any physical law stating that a quantity or property remains constant during and after an interaction or process.
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References in periodicals archive ?
The conserved quantity of the gravitational field has the form [100]
Among different spacetime symmetries isometries or the Killing vectors (KVs) have the importance that they help in understanding the geometric properties of spaces also corresponding to each isometries there is some conserved quantity. They are also subset of the Noether symmetry (NS) [1-3] i.e.
In other words, each symmetry determines a conserved quantity. Conservation laws help us to understand and describe a dynamical system.
If every conserved quantity can be associated this way, we have a well-defined mapping between the fields and conserved quantities.
In order to connect the exclusion principle with a conserved quantity, supposing "1" (or any other constant) denote "valid", and "does not equal 1" denote "invalid", in this way the exclusion principle (denoted as P) can be written as the following form of conserved quantity P=1
of (28), if the spatial flux [T.sup.2] vanishes on the boundary x = 0 and x = [infinity] of the semi-infinite medium, then integration from x = 0 to x = [infinity] provides conserved quantity of the boundary value problem.
A conserved quantity was utilized to find the unknown exponent in the similarity solution which could not have been obtained from the homogeneous boundary conditions [16].
The above observation states that for any (interaction-free) additive conserved quantity in a reversible cellular automaton, there corresponds a Bernoulli distribution that is stationary.
(6.6) guarantee that if a function H is a time-dependent conserved quantity for v, then X (H) with X being any of the vectors in Eq.
From a mathematical point of view it is understood as a consequence of Noether's theorem, if the theory's symmetry is time invariance then the conserved quantity is called energy.