U+1D67E "𝙾" Mathematical Monospace Capital O Unicode Character

U+1D67E "𝙾" Mathematical Monospace Capital O is a typographic symbol belonging to the Mathematical Alphanumeric Symbols block, designed for use in mathematical and scientific notation where a monospace, typewriter style capital O is needed. It is distinct from the standard Latin capital O, as it is intended to convey a specific semantic meaning within formal contexts, such as representing a set, a constant, or a variable in a plain, fixed width typeface. This character helps authors and publishers avoid ambiguous typographic substitutions when rendering mathematical expressions, ensuring that the glyph retains its intended shape and spacing even in environments that may default to proportional fonts.

General Properties

Code Point	U+1D67E
Version Added	3.1
Name	Mathematical Monospace Capital O
Block	Mathematical Alphanumeric Symbols
General Category	Uppercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"O" U+004F Latin Capital Letter O

Encodings

HTML Decimal Encoding	𝙾
HTML Hex Encoding	𝙾
UTF-8 Encoding	0xF0 0x9D 0x99 0xBE
UTF-16 Encoding	0xD835 0xDE7E
UTF-32 Encoding	0x0001D67E
C/C++/Java Escape	\ud835\ude7e

Unicode Properties

NFC Quick Check	Yes
NFD Quick Check	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Alphabetic
Uppercase	Yes
Cased	Yes
Changes When NFKC Casefolded	Yes
NFKC Casefold	"o" U+006F Latin Small Letter O
NFKC Simple Casefold	"o" U+006F Latin Small Letter O
Script	Common
Script Extensions	Common
Indic Syllabic Category	Other
ID Start	Yes
XID Start	Yes
ID Continue	Yes
XID Continue	Yes
Alphabetic	Yes
Math	Yes
Other Math	Yes
Vertical Orientation	Rotated
Grapheme Base	Yes
Grapheme Cluster Break	Other
Word Break	Alphabetic letter
Sentence Break	Upper