Home: go to the homepage U+1D400 to U+1D7FF Mathematical Alphanumeric Symbols
Glyph for U+1D4B9
Source: Noto Sans Math

U+1D4B9 Mathematical Script Small D

U+1D4B9 was added to Unicode in version 3.1 (2001). It belongs to the block U+1D400 to U+1D7FF Mathematical Alphanumeric Symbols in the U+10000 to U+1FFFF Supplementary Multilingual Plane.

This character is a Lowercase Letter and is commonly used, that is, in no specific script.

The glyph is a Font composition of the glyph Glyph for U+0064 Latin Small Letter D. It has a Neutral East Asian Width. In bidirectional context it acts as Left To Right and is not mirrored. The glyph can, under circumstances, be confused with 1 other glyphs. In text U+1D4B9 behaves as Alphabetic regarding line breaks. It has type Lower for sentence and Alphabetic Letter for word breaks. The Grapheme Cluster Break is Any.

The Wikipedia has the following information about this codepoint:

Mathematical Alphanumeric Symbols is a Unicode block comprising styled forms of Latin and Greek letters and decimal digits that enable mathematicians to denote different notions with different letter styles. The letters in various fonts often have specific, fixed meanings in particular areas of mathematics. By providing uniformity over numerous mathematical articles and books, these conventions help to read mathematical formulas. These also may be used to differentiate between concepts that share a letter in a single problem.

Unicode now includes many such symbols (in the range U+1D400–U+1D7FF).Β The rationale behind this is that it enables design and usage of special mathematical characters (fonts) that include all necessary properties to differentiate from other alphanumerics, e.g. in mathematics an italic "𝐴" can have a different meaning from a roman letter "A". Unicode originally included a limited set of such letter forms in its Letterlike Symbols block before completing the set of Latin and Greek letter forms in this block beginning in version 3.1.

Unicode expressly recommends that these characters not be used in general text as a substitute for presentational markup; the letters are specifically designed to be semantically different from each other. Unicode does not include a set of normal serif letters in the set. Still they have found some usage on social media, for example by people who want a stylized user name, and in email spam, in an attempt to bypass filters.

All these letter shapes may be manipulated with MathML's attribute mathvariant.

The introduction date of some of the more commonly used symbols can be found in the Table of mathematical symbols by introduction date.

Representations

System Representation
NΒΊ 119993
UTF-8 F0 9D 92 B9
UTF-16 D8 35 DC B9
UTF-32 00 01 D4 B9
URL-Quoted %F0%9D%92%B9
HTML hex reference 𝒹
Wrong windows-1252 Mojibake 𝒹
HTML named entity 𝒹
LATEX \mathscr{d}

Related Characters

Confusables

Elsewhere

Complete Record

Property Value
Age 3.1 (2001)
Unicode Name MATHEMATICAL SCRIPT SMALL D
Unicode 1 Name β€”
Block Mathematical Alphanumeric Symbols
General Category Lowercase Letter
Script Common
Bidirectional Category Left To Right
Combining Class Not Reordered
Decomposition Type Font
Decomposition Mapping Glyph for U+0064 Latin Small Letter D
Lowercase βœ”
Simple Lowercase Mapping Glyph for U+1D4B9 Mathematical Script Small D
Lowercase Mapping Glyph for U+1D4B9 Mathematical Script Small D
Uppercase ✘
Simple Uppercase Mapping Glyph for U+1D4B9 Mathematical Script Small D
Uppercase Mapping Glyph for U+1D4B9 Mathematical Script Small D
Simple Titlecase Mapping Glyph for U+1D4B9 Mathematical Script Small D
Titlecase Mapping Glyph for U+1D4B9 Mathematical Script Small D
Case Folding Glyph for U+1D4B9 Mathematical Script Small D
ASCII Hex Digit ✘
Alphabetic βœ”
Bidi Control ✘
Bidi Mirrored ✘
Composition Exclusion ✘
Case Ignorable ✘
Changes When Casefolded ✘
Changes When Casemapped ✘
Changes When NFKC Casefolded βœ”
Changes When Lowercased ✘
Changes When Titlecased ✘
Changes When Uppercased ✘
Cased βœ”
Full Composition Exclusion ✘
Default Ignorable Code Point ✘
Dash ✘
Deprecated ✘
Diacritic ✘
Emoji Modifier Base ✘
Emoji Component ✘
Emoji Modifier ✘
Emoji Presentation ✘
Emoji ✘
Extender ✘
Extended Pictographic ✘
FC NFKC Closure Glyph for U+1D4B9 Mathematical Script Small D
Grapheme Cluster Break Any
Grapheme Base βœ”
Grapheme Extend ✘
Grapheme Link ✘
Hex Digit ✘
Hyphen ✘
ID Continue βœ”
ID Start βœ”
IDS Binary Operator ✘
IDS Trinary Operator and ✘
IDSU 0
ID_Compat_Math_Continue 0
ID_Compat_Math_Start 0
Ideographic ✘
InCB None
Indic Mantra Category β€”
Indic Positional Category NA
Indic Syllabic Category Other
Jamo Short Name β€”
Join Control ✘
Logical Order Exception ✘
Math βœ”
Noncharacter Code Point ✘
NFC Quick Check Yes
NFD Quick Check Yes
NFKC Casefold Glyph for U+0064 Latin Small Letter D
NFKC Quick Check No
NFKC_SCF Glyph for U+0064 Latin Small Letter D
NFKD Quick Check No
Other Alphabetic ✘
Other Default Ignorable Code Point ✘
Other Grapheme Extend ✘
Other ID Continue ✘
Other ID Start ✘
Other Lowercase ✘
Other Math βœ”
Other Uppercase ✘
Prepended Concatenation Mark ✘
Pattern Syntax ✘
Pattern White Space ✘
Quotation Mark ✘
Regional Indicator ✘
Radical ✘
Sentence Break Lower
Soft Dotted ✘
Sentence Terminal ✘
Terminal Punctuation ✘
Unified Ideograph ✘
Variation Selector ✘
Word Break Alphabetic Letter
White Space ✘
XID Continue βœ”
XID Start βœ”
Expands On NFC ✘
Expands On NFD ✘
Expands On NFKC ✘
Expands On NFKD ✘
Bidi Paired Bracket Glyph for U+1D4B9 Mathematical Script Small D
Bidi Paired Bracket Type None
East Asian Width Neutral
Hangul Syllable Type Not Applicable
ISO 10646 Comment β€”
Joining Group No_Joining_Group
Joining Type Non Joining
Line Break Alphabetic
Numeric Type None
Numeric Value not a number
Simple Case Folding Glyph for U+1D4B9 Mathematical Script Small D
Script Extension
Vertical Orientation R