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Greek letters are used in mathematics, science, engineering, and other areas where mathematical notation is used as symbols for constants, special functions, and also conventionally for variables representing certain quantities. In these contexts, the capital letters and the small letters represent distinct and unrelated entities.
u+03d2 ϒ greek upsilon with hook symbol (υ, ϒ) u+03d3 ϓ greek upsilon with acute and hook symbol; u+03d4 ϔ greek upsilon with diaeresis and hook symbol; u+1d7f ᵿ latin small letter upsilon with stroke; u+1db7 ᶷ modifier letter small upsilon; u+1f50 ὐ greek small letter upsilon with psili; u+1f51 ὑ greek small letter ...
All forms of the Greek alphabet were originally based on the shared inventory of the 22 symbols of the Phoenician alphabet, with the exception of the letter Samekh, whose Greek counterpart Xi (Ξ) was used only in a subgroup of Greek alphabets, and with the common addition of Upsilon (Υ) for the vowel /u, ū/.
The symbol ϵ (U+03F5) is designated specifically for the lunate form, used as a technical symbol. The symbol ϑ ("script theta") is a cursive form of theta (θ), frequent in handwriting, and used with a specialized meaning as a technical symbol. The symbol ϰ ("kappa symbol") is a cursive form of kappa (κ), used as a technical symbol.
This is a list of letters of the Greek alphabet. The definition of a Greek letter for this list is a character encoded in the Unicode standard that a has script property of "Greek" and the general category of "Letter". An overview of the distribution of Greek letters is given in Greek script in Unicode.
Delta (/ ˈ d ɛ l t ə /; [1] uppercase Δ, lowercase δ; Greek: δέλτα, délta, ) [2] is the fourth letter of the Greek alphabet. In the system of Greek numerals , it has a value of four. It was derived from the Phoenician letter dalet 𐤃. [ 3 ]
Delta Upsilon (ΔΥ), commonly known as DU, is a collegiate men's fraternity founded on November 4, 1834, at Williams College in Williamstown, Massachusetts.It is the sixth-oldest, all-male, college Greek-letter organization founded in North America (only Kappa Alpha Society, Sigma Phi, Delta Phi, Alpha Delta Phi, and Psi Upsilon predate). [5]
Bust of Nikos Kazantzakis with the traditional Greek nu. The lower-case letter ν is used as a symbol in many academic fields. Uppercase nu is not used, because it appears identical to Latin N. Mathematics: Degrees of freedom in statistics. The greatest fixed point of a function, as commonly used in the μ-calculus.