Alpha / ˈælfə / ⓘ ALF-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.

Learn about the Greek letter Alpha (α), its pronunciation, usage examples, and common applications in mathematics, science, and engineering.

Uses of Alpha in Mathematics In mathematics, α is one of the most commonly used Greek letters:

Alpha (uppercase Α; lowercase α) is the first letter of the Greek alphabet. The Greek alphabet is the ancestor of modern languages and is derived from the Phoenician alphabet.

Greek alphabet letters & symbols Greek alphabet letters are used as math and science symbols. Greek alphabet list

The ‘α’ is a letter of the Greek alphabet. In mathematics, physics, and engineering, it is often used to denote an angle, a coefficient of thermal expansion, as an alpha particle, among other uses.

"A" Letter in mathematics and in science α represents: the first angle in a triangle. one root of a quadratic equation, β represents the other the statistical significance of a result the false positive rate …

We love Greek letters in mathematics, because we are always in need of symbols for concepts, constants, and variables.

Dec 27, 2025 · The letter represented the open front unrounded vowel: /a/, /aː/. Today, this letter is often represented by lower case α (a), although Ancient Greek did not distinguish between upper and …

The vowel letters α, η, ω carry an additional diacritic in certain words, the so-called iota subscript, which has the shape of a small vertical stroke or a miniature ι below the letter.