U+1D5DB "𝗛" Mathematical Sans-Serif Bold Capital H Unicode Character

U+1D5DB "𝗛" Mathematical Sans-Serif Bold Capital H is a typographic variant of the standard Latin capital letter H, designed for use in mathematical and scientific notation to distinguish variables or constants from plain text. It belongs to the Mathematical Alphanumeric Symbols block, which was introduced to provide distinct, style-specific characters for formulas without relying on font formatting. This character appears as a bold, sans-serif version of H, making it ideal for denoting vectors, matrices, or set symbols in academic writing and digital typesetting. Its inclusion in Unicode ensures consistent representation across different platforms and software, aiding clarity in complex mathematical expressions.

General Properties

Code Point	U+1D5DB
Version Added	3.1
Name	Mathematical Sans-Serif Bold Capital H
Block	Mathematical Alphanumeric Symbols
General Category	Uppercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"H" U+0048 Latin Capital Letter H

Encodings

HTML Decimal Encoding	𝗛
HTML Hex Encoding	𝗛
UTF-8 Encoding	0xF0 0x9D 0x97 0x9B
UTF-16 Encoding	0xD835 0xDDDB
UTF-32 Encoding	0x0001D5DB
C/C++/Java Escape	\ud835\udddb

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	"h" U+0068 Latin Small Letter H
NFKC Simple Casefold	"h" U+0068 Latin Small Letter H
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