When allocating arrows, the Unicode committee didn't leave enough expansion space for future arrows. Thus two new code blocks, Supplemental Arrows A and Supplemental Arrows B, were added for version 3.2. They are part of the Unicode 3.2 effort to offer complete suppport for ISO TR 9573-13.

The long arrows encoded in the range U+27F5 to U+27FF map to standard SGML entity sets supported by MathML. Long arrows represent distinct semantics from their short counterparts, rather than mere stylistic glyph differences. For example, the shorter forms of arrows are often used in connection with limits, whereas the longer ones are associated with mappings. The use of the long arrows is so common that they were assigned entity names in the ISOAMSA entity set, one of the suite of mathematical symbol entity sets covered by the Unicode Standard.

See also the code blocks Arrows and Supplemental Arrows B.

Unicode's Supplemental Arrows A code block reserves the 16 code points from U+27F0 to U+27FF, of which all 16 are currently assigned.

Miscellaneous Mathematical Symbols A <-- Supplemental Arrows A --> Braille Patterns

All the characters in this code block were added in Unicode 3.2

All the characters in this code block are in general category Symbol, Math Sm

All the characters in this code block are in bidirectional category Other Neutral ON

The columns below should be interpreted as :

  1. The Unicode code for the character
  2. The character in question
  3. The Unicode name for the character

If the characters below show up poorly, or not at all, see Unicode Support for possible solutions.


Supplemental Arrows A


U+27F0   ⟰   upwards quadruple arrow
ref U+290A   ⤊   upwards triple arrow (Supplemental Arrows B)
ref U+2B45   ⭅   leftwards quadruple arrow (Miscellaneous Symbols and Arrows)
U+27F1   ⟱   downwards quadruple arrow
ref U+290B   ⤋   downwards triple arrow (Supplemental Arrows B)
U+27F2   ⟲   anticlockwise gapped circle arrow
ref U+21BA   ↺   anticlockwise open circle arrow (Arrows)
ref U+2940   ⥀   anticlockwise closed circle arrow (Supplemental Arrows B)
U+27F3   ⟳   clockwise gapped circle arrow
ref U+21BB   ↻   clockwise open circle arrow (Arrows)
ref U+2941   ⥁   clockwise closed circle arrow (Supplemental Arrows B)
U+27F4   ⟴   right arrow with circled plus
ref U+2B32   ⬲   left arrow with circled plus (Miscellaneous Symbols and Arrows)

     Long arrows
The long arrows are used for mapping whereas the short forms would be used in limits. They are also needed for MathML to complete mapping to the AMSA sets.

U+27F5   ⟵   long leftwards arrow
sgml &LongLeftArrow; &longleftarrow; &xlarr;
ref U+2190   ←   leftwards arrow (Arrows)
U+27F6   ⟶   long rightwards arrow
sgml &LongRightArrow; &longrightarrow; &xrarr;
ref U+2192   →   rightwards arrow (Arrows)
U+27F7   ⟷   long left right arrow
sgml &LongLeftRightArrow; &longleftrightarrow; &xharr;
ref U+2194   ↔   left right arrow (Arrows)
U+27F8   ⟸   long leftwards double arrow
sgml &DoubleLongLeftArrow; &Longleftarrow; &xlArr;
ref U+21D0   ⇐   leftwards double arrow (Arrows)
U+27F9   ⟹   long rightwards double arrow
sgml &DoubleLongRightArrow; &Longrightarrow; &xrArr;
ref U+21D2   ⇒   rightwards double arrow (Arrows)
U+27FA   ⟺   long left right double arrow
sgml &DoubleLongLeftRightArrow; &Longleftrightarrow; &xhArr;
ref U+21D4   ⇔   left right double arrow (Arrows)
U+27FB   ⟻   long leftwards arrow from bar
aka maps from
ref U+21A4   ↤   leftwards arrow from bar (Arrows)
U+27FC   ⟼   long rightwards arrow from bar
sgml &longmapsto; &xmap;
aka maps to
ref U+21A6   ↦   rightwards arrow from bar (Arrows)
U+27FD   ⟽   long leftwards double arrow from bar
ref U+2906   ⤆   leftwards double arrow from bar (Supplemental Arrows B)
U+27FE   ⟾   long rightwards double arrow from bar
ref U+2907   ⤇   rightwards double arrow from bar (Supplemental Arrows B)
U+27FF   ⟿   long rightwards squiggle arrow
sgml &dzigrarr;
ref U+21DD   ⇝   rightwards squiggle arrow (Arrows)
ref U+2B33   ⬳   long leftwards squiggle arrow (Miscellaneous Symbols and Arrows)

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