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  Wikipedia: Delta (letter)

Wikipedia: Delta (letter)
Delta (letter)
From Wikipedia, the free encyclopedia.

Delta (upper case Δ, lower case δ) is the 4th letter of the Greek alphabet. In the system of Greek numerals is has a value of 4.

The term river delta is named after the letter delta because it has roughly the triangular shape of the upper-case delta.

The upper-case letter Δ is used as the symbol for:

The lower-case letter δ is used as the symbol for:
  • A microscopic change in the value of a variable in mathematics or science.
  • The Kronecker delta in mathematics.
  • A mark for deletion in proofreading. The usage is said to date back to classical times.


From Wikipedia, the free encyclopedia. 
Modified by Geona