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When the letters were adopted by the Greeks, most of the Phoenician names were maintained or modified slightly to fit Greek phonology; thus, ʾaleph, bet, gimel became alpha, beta, gamma. The Greek names of the following letters are more or less straightforward continuations of their Phoenician antecedents.
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.
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.
Alpha / ˈ æ l f ə / [1] (uppercase Α, lowercase α) [a] is the first letter of the Greek alphabet. In the system of Greek numerals , it has a value of one. Alpha is derived from the Phoenician letter aleph , which is the West Semitic word for " ox ". [ 2 ]
Beta (UK: / ˈ b iː t ə /, US: / ˈ b eɪ t ə /; uppercase Β, lowercase β, or cursive ϐ; Ancient Greek: βῆτα, romanized: bē̂ta or Greek: βήτα, romanized: víta) is the second letter of the Greek alphabet. In the system of Greek numerals, it has a value of 2.
[1] [2] The local, so-called epichoric, alphabets differed in many ways: in the use of the consonant symbols Χ, Φ and Ψ; in the use of the innovative long vowel letters (Ω and Η), in the absence or presence of Η in its original consonant function (/h/); in the use or non-use of certain archaic letters (Ϝ = /w/, Ϙ = /k/, Ϻ = /s/); and ...
The letter now known as sigma took its name from sāmekh but its form from šin, while the letter San, which occurred in a few dialects only, took its name from šin but its place in the alphabet from ṣādē. A further Greek letter of uncertain origin, sampi, is found occasionally, and may represent an affricate, such as [t͡s].
Though both greek letters, alpha and beta are quite different from each other. Alpha is a way to measure excess return, while beta is used to measure the volatility, or risk, of an asset.