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| έψιλον |
The letter έψιλον [ epsilon, (έψιλόν, "simple e") ] (upper case E, lower case ε) is the fifth letter of the Greek alphabet.
In the Greek Numbering System ε equals 5 (ε=5).
The next letter in the row is "στ" (stigma / sigma tau), which equals 6, just like the letter ς (ς΄=6).
έψιλον has many similarities with the letter E,e of other alphabets.
It came from the phoenix letter he, which meant window.
The lower case ε is used for: a very small quantity in mathematics and also is the antisymmetric tensor (in mathematics).
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