# Definitions for perturbation theoryper·tur·ba·tion the·o·ry

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1. Perturbation theory

Perturbation theory comprises mathematical methods for finding an approximate solution to a problem, by starting from the exact solution of a related, simpler problem. A critical feature of the technique is a middle step that breaks the problem into "solvable" and "perturbation" parts. Perturbation theory is applicable if the problem at hand cannot be solved exactly, but can be formulated by adding a "small" term to the mathematical description of the exactly solvable problem.

### Numerology

1. Chaldean Numerology

The numerical value of perturbation theory in Chaldean Numerology is: 8

2. Pythagorean Numerology

The numerical value of perturbation theory in Pythagorean Numerology is: 7

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"perturbation theory." Definitions.net. STANDS4 LLC, 2023. Web. 30 May 2023. <https://www.definitions.net/definition/perturbation+theory>.

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##### established or prearranged unalterably
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