U+2213 "∓" Minus-or-Plus Sign Unicode Character

U+2213 "∓" Minus-or-Plus Sign is a mathematical symbol that represents the opposite relationship to the more common plus-minus sign "±", serving as a compact notation for expressing an alternative sign order, typically appearing in pair with "±" in expressions like "a ∓ b = c ± d" where the upper sign of "∓" corresponds to the lower sign of "±". It is frequently used in formulas for trigonometric identities, such as cos(A ± B) = cos A cos B ∓ sin A sin B, and in quadratic equations to denote two distinct but related solutions without writing them out separately, though it remains less common in everyday text than its counterpart.

General Properties

Code Point	U+2213
Version Added	1.1
Name	Minus-or-Plus Sign
Block	Mathematical Operators
General Category	Math Symbol
Canonical Combining Class	Not Reordered
Bidirectional Class	European Terminator

Encodings

HTML Decimal Encoding	∓
HTML Hex Encoding	∓
UTF-8 Encoding	0xE2 0x88 0x93
UTF-16 Encoding	0x2213
UTF-32 Encoding	0x00002213
C/C++/Java Escape	\u2213

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	Prefix Numeric
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