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phase space

noun, Physics.
a hypothetical space constructed so as to have as many coordinates as are necessary to define the state of a given substance or system.
Origin of phase space
1925-30 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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phase space in Technology
The 2n-dimensional space consisting of the possible values of (x1, x1., x2, x2., ..., xn, xn.) for a system of n first-order ordinary differential equations (or more generally, Pfaffian forms).
If n=1, the phase space is known as a phase plane.
The Free On-line Dictionary of Computing, © Denis Howe 2010
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