U+1D41D "𝐝" Mathematical Bold Small D Unicode Character

Unicode Version 17.0

𝐝

U+1D41D "𝐝" Mathematical Bold Small D is a typographic variant of the lowercase letter D, specifically designed for mathematical and scientific notation where a bold, distinguishing style is required to represent a vector, a variable, or a constant within a formula. It belongs to the Mathematical Alphanumeric Symbols block, which provides a wide range of stylized letters and numbers to avoid ambiguity in technical texts. This character is not intended for use in standard written language but serves a specialized purpose in disciplines like mathematics, physics, and engineering, where it helps clarify the meaning of symbols within complex equations. Its inclusion in Unicode ensures consistent rendering across different digital platforms and fonts, supporting precise communication in academic and professional documents.

General Properties

Code Point U+1D41D
Version Added 3.1
Name Mathematical Bold Small D
Block Mathematical Alphanumeric Symbols
General Category Lowercase Letter
Canonical Combining Class Not Reordered
Bidirectional Class Left To Right
Decomposition Type Font
Decomposition Mapping "d" U+0064 Latin Small Letter D

Encodings

HTML Decimal Encoding 𝐝
HTML Hex Encoding 𝐝
UTF-8 Encoding 0xF0 0x9D 0x90 0x9D
UTF-16 Encoding 0xD835 0xDC1D
UTF-32 Encoding 0x0001D41D
C/C++/Java Escape \ud835\udc1d

Unicode Properties

NFC Quick Check Yes
NFD Quick Check Yes
Numeric Type None
Numeric Value NaN
Line Break Alphabetic
Lowercase Yes
Cased Yes
Changes When NFKC Casefolded Yes
NFKC Casefold "d" U+0064 Latin Small Letter D
NFKC Simple Casefold "d" U+0064 Latin Small Letter D
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 Lower