U+1D5F6 "𝗶" Mathematical Sans-Serif Bold Small I Unicode Character

Unicode Version 17.0

𝗶

U+1D5F6 "𝗶" Mathematical Sans-Serif Bold Small I is a specialized typographic glyph used in mathematical and scientific notation to represent the lowercase letter "i" in a sans-serif bold style, distinct from the standard italic "i" often used for imaginary numbers or indices. It belongs to the Mathematical Alphanumeric Symbols block, which was added to Unicode to provide separate characters for various typefaces and weights needed for mathematical expressions. This character allows authors and typesetting systems to clearly differentiate between stylistic variants without relying on formatting alone, ensuring precision in documents where a bold, sans-serif "i" is required for semantic or visual clarity, such as in vector notation or algorithmic symbols.

General Properties

Code Point U+1D5F6
Version Added 3.1
Name Mathematical Sans-Serif Bold Small I
Block Mathematical Alphanumeric Symbols
General Category Lowercase Letter
Canonical Combining Class Not Reordered
Bidirectional Class Left To Right
Decomposition Type Font
Decomposition Mapping "i" U+0069 Latin Small Letter I

Encodings

HTML Decimal Encoding 𝗶
HTML Hex Encoding 𝗶
UTF-8 Encoding 0xF0 0x9D 0x97 0xB6
UTF-16 Encoding 0xD835 0xDDF6
UTF-32 Encoding 0x0001D5F6
C/C++/Java Escape \ud835\uddf6

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 "i" U+0069 Latin Small Letter I
NFKC Simple Casefold "i" U+0069 Latin Small Letter I
Script Common
Script Extensions Common
Indic Syllabic Category Other
ID Start Yes
XID Start Yes
ID Continue Yes
XID Continue Yes
Soft Dotted 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