U+2084 "₄" Subscript Four Unicode Character

U+2084 "₄" Subscript Four is a numeric glyph used primarily in mathematical, scientific, and chemical notation to denote the number four in a subscripted position, such as in chemical formulas like H₂SO₄ or in indexing variables in equations. It is part of the Superscripts and Subscripts block within Unicode, standardized for digital text to ensure consistent rendering across platforms, and is distinct from a regular digit four placed below the baseline through formatting. This character enables precise representation of subscripts without relying on proprietary formatting or markup languages.