Epsilon
From Wikipedia, the free encyclopedia.

Epsilon (Ε ε) is the 5th letter of the Greek alphabet and has a numeric value of 5.

The lower-case letter ε is used as the symbol for:

• The Levi-Civita symbol in mathematics.
• The permittivity of a medium in physics.

The original article can be found at: http://en.wikipedia.org/wiki/Epsilon.
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