UnicodeCharactercom
𝐣
U+1D423 Β· MATHEMATICAL BOLD SMALL J

Mathematical Bold Small J

  • CodepointU+1D423
  • NameMATHEMATICAL BOLD SMALL J
  • Decimal119843
  • BlockMathematical Alphanumeric Symbols (U+1D400–U+1D7FF)
  • Plane1 β€” Supplementary Multilingual Plane
  • ScriptCommon
  • CategoryLl β€” Lowercase Letter
  • Unicode version3.1 (2001)
  • Bidi classL β€” Left-to-Right
  • Combining class0
  • East Asian widthN β€” Neutral
  • MirroredNo

About this character

U+1D423 (𝐣) is MATHEMATICAL BOLD SMALL J, a lowercase letter in the Mathematical Alphanumeric Symbols block. Its script is Common: it is shared by many writing systems rather than belonging to one. It was added in Unicode 3.1 (2001).

It is a font variant of U+006A j (compatibility decomposition <font>). NFC and NFD leave it alone, but NFKC and NFKD replace it with U+006A j. Search engines, identifier checks and username systems that apply NFKC will treat the two as the same text.

How to type 𝐣

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Encodings & escapes

UTF-8 encoder β†’
UTF-8F0 9D 90 A34 bytes
UTF-16D835 DC23surrogate pair
UTF-320001D4234 bytes
HTML decimal&#119843;
HTML hex&#x1D423;
CSS\1D423in content: "…"
JavaScript\u{1D423}ES2015+
JavaScript\uD835\uDC23surrogate pair
JSON\uD835\uDC23
Python\U0001D423
Python\N{MATHEMATICAL BOLD SMALL J}by name
Java / C#\uD835\uDC23
C / C++\U0001D423universal character name
Rust / Swift / PHP\u{1D423}
Go\U0001D423
Ruby\u{1D423}
Excel / Sheets=UNICHAR(119843)
URL-encoded%F0%9D%90%A3percent-encoded UTF-8
Β§

Normalization forms

Normalizer β†’
NFCunchanged
NFDunchanged
NFKCU+006A j
NFKDU+006A j
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Looks similar

Characters that Unicode’s security data (UTS #39 confusables) lists as visually confusable with this one. Useful for spotting lookalike spoofing in URLs and usernames.

U+006AjLatin Small Letter J U+03F3Ο³Greek Letter Yot U+0458јCyrillic Small Letter Je U+2149β…‰Double-Struck Italic Small J U+FF4AｊFullwidth Latin Small Letter J U+1D457𝑗Mathematical Italic Small J U+1D48B𝒋Mathematical Bold Italic Small J U+1D4BF𝒿Mathematical Script Small J U+1D4F3𝓳Mathematical Bold Script Small J U+1D527𝔧Mathematical Fraktur Small J U+1D55B𝕛Mathematical Double-Struck Small J U+1D58F𝖏Mathematical Bold Fraktur Small J U+1D5C3𝗃Mathematical Sans-Serif Small J U+1D5F7𝗷Mathematical Sans-Serif Bold Small J U+1D62B𝘫Mathematical Sans-Serif Italic Small J U+1D65Fπ™ŸMathematical Sans-Serif Bold Italic Small J
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Nearby in Mathematical Alphanumeric Symbols

All in block β†’
U+1D41D𝐝Mathematical Bold Small D U+1D41E𝐞Mathematical Bold Small E U+1D41F𝐟Mathematical Bold Small F U+1D420𝐠Mathematical Bold Small G U+1D421𝐑Mathematical Bold Small H U+1D422𝐒Mathematical Bold Small I U+1D424𝐀Mathematical Bold Small K U+1D425π₯Mathematical Bold Small L U+1D426𝐦Mathematical Bold Small M U+1D427𝐧Mathematical Bold Small N U+1D428𝐨Mathematical Bold Small O U+1D429𝐩Mathematical Bold Small P