U+2916 "⤖" Rightwards Two-Headed Arrow with Tail Unicode Character

U+2916 "⤖" Rightwards Two-Headed Arrow with Tail is a mathematical and logical symbol that represents a specific directional mapping or implication, often indicating a function that is both injective and surjective (a bijection) with a constrained or resultant outcome, as the two heads signify bidirectionality or a two-way relationship while the tail attaches a condition or limitation. It belongs to the Supplemental Arrows-B block and is used in advanced notation within set theory, category theory, and formal logic to denote an isomorphic or strongly reversible transformation. Its design combines a standard rightward arrow with an additional arrowhead on the left and a small vertical tail at the bottom of the shaft, distinguishing it from simpler arrow symbols.

General Properties

Code Point	U+2916
Version Added	3.2
Name	Rightwards Two-Headed Arrow with Tail
Block	Supplemental Arrows-B
General Category	Math Symbol
Canonical Combining Class	Not Reordered
Bidirectional Class	Other Neutral

Encodings

HTML Decimal Encoding	⤖
HTML Hex Encoding	⤖
UTF-8 Encoding	0xE2 0xA4 0x96
UTF-16 Encoding	0x2916
UTF-32 Encoding	0x00002916
C/C++/Java Escape	\u2916

Unicode Properties

NFC Quick Check	Yes
NFD Quick Check	Yes
NFKC Quick Check	Yes
NFKD Quick Check	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Alphabetic
Script	Common
Script Extensions	Common
Indic Syllabic Category	Other
Pattern Syntax	Yes
Math	Yes
Vertical Orientation	Rotated
Grapheme Base	Yes
Grapheme Cluster Break	Other
Word Break	Other
Sentence Break	Other