0x21D5

0x21D5 is the hexadecimal encoding used to refer to the Unicode code point U+21D5, which belongs to the Arrows block of the Unicode standard. This code point designates a specific arrow symbol that appears in math, logic, and technical contexts.

Appearance and glyphs vary by font. In many fonts, the character is rendered as a vertical double-headed arrow, indicating bidirectional relation or movement. Some typefaces may render variations of the symbol, such as an upward arrow with extra stroke or a two-headed vertical arrow, depending on design choices in the font and rendering engine.

Usage and context. The symbol represented by U+21D5 is used in specialized notation rather than in everyday prose. It can appear in mathematical expressions, diagrams, or software interfaces to convey concepts like bidirectionality, transformation steps, or reversal, depending on the conventions of a given field or document. Its exact semantic meaning is determined by context and may differ across disciplines.

Encoding and representation. The code point can be written in HTML as ⇕ or decimal as ⇥. In Unicode, it is part of the standard set of arrows and is commonly supported across modern fonts and systems. In data interchange, it is typically treated as a single code point within the Unicode encoding scheme.

See also. Related symbols reside in the Unicode Arrows block (U+2190 to U+21FF) and include other directional arrows used in mathematical and technical notation.