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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 ]
The OpenType font format has the feature tag "mgrk" ("Mathematical Greek") to identify a glyph as representing a Greek letter to be used in mathematical (as opposed to Greek language) contexts. The table below shows a comparison of Greek letters rendered in TeX and HTML. The font used in the TeX rendering is an italic style.
Greek symbols are used as symbols in mathematics, physics and other sciences. Many symbols have traditional uses, such as lower case epsilon (ε) for an arbitrarily small positive number , lower case pi (π) for the ratio of the circumference of a circle to its diameter , capital sigma (Σ) for summation , and lower case sigma (σ) for standard ...
The letter Sigma. Sigma (/ ˈ s ɪ ɡ m ə / SIG-mə; [1] uppercase Σ, lowercase σ, lowercase in word-final position ς; Ancient Greek: σίγμα) is the eighteenth letter of the Greek alphabet.
The symbol was introduced originally in 1770 by Nicolas de Condorcet, who used it for a partial differential, and adopted for the partial derivative by Adrien-Marie Legendre in 1786. [3] It represents a specialized cursive type of the letter d , just as the integral sign originates as a specialized type of a long s (first used in print by ...
Delta commonly refers to: Delta (letter) (Δ or δ), the fourth letter of the Greek alphabet D (NATO phonetic alphabet: "Delta"), the fourth letter in the Latin alphabet
The Greek alphabet letters Delta Delta Delta (ΔΔΔ) are the official symbols. The dolphin is recognized as an additional symbol as it was considered to be a good omen by the ancient Greeks . The colors of Tri Delta are silver, gold, and cerulean blue (made famous in The Devil Wears Prada ), while the pearl is its jewel.
The symbol for five was the Greek letter Π (pi), representing the Greek word for 'five' (pente). Numbers six through nine were written as a Π with vertical lines beside it. Ten was represented by the letter Δ (delta), from word for 'ten' (deka), one hundred by the letter from the word for hundred, and so on. This system was 'acrophonic ...