Greek Capital Letter Gamma Γ

The Greek Capital Letter Gamma character (Γ) is a standard HTML entity defined in the HTML specification. In HTML source code, it can be written using the named entity reference Γ, the decimal numeric character reference Γ, or the hexadecimal numeric reference Γ. The character is assigned Unicode code point U+0393 in the Universal Character Set.

Greek capital gamma (Γ) has a distinctive L-shaped appearance and is visually distinct from any Latin letter. It represents the gamma function Γ(n) in mathematics, the circulation in fluid dynamics, and the reflection coefficient in transmission line theory. It is one of the most commonly used uppercase Greek letters.

Greek letter entities are indispensable for scientific papers, engineering documentation, statistical analyses, and mathematical content published on the web. From physics equations using alpha and omega to statistical formulas featuring sigma and mu, these entities allow content authors to include Greek characters reliably without requiring specialized fonts or complex Unicode input methods on the keyboard.

When deciding how to encode the Greek Capital Letter Gamma character in your HTML documents, the named entity Γ is generally the most readable choice for developers reviewing or maintaining source code. The decimal form Γ and hexadecimal form Γ are equally valid alternatives that work in contexts where named entities may not be supported, or when generating HTML output programmatically from server-side code. All three representations produce identical visual output in every modern web browser.

Use the capital gamma entity for the gamma function Γ(n), which generalizes the factorial to non-integer values, in fluid dynamics (circulation), and physics (decay width in particle physics). Unlike many capital Greek letters, Γ is visually distinctive and widely used in notation.