UnicodeCharactercom
ℵ
U+2135 · ALEF SYMBOL

Alef Symbol

  • CodepointU+2135
  • NameALEF SYMBOL
  • Decimal8501
  • BlockLetterlike Symbols (U+2100–U+214F)
  • Plane0 — Basic Multilingual Plane
  • ScriptCommon
  • CategoryLo — Other Letter
  • Unicode version1.1 (1993)
  • Bidi classL — Left-to-Right
  • Combining class0
  • East Asian widthN — Neutral
  • MirroredNo

About this character

U+2135 (ℵ) is ALEF SYMBOL, a letter in the Letterlike Symbols block. Its script is Common: it is shared by many writing systems rather than belonging to one. It was added in Unicode 1.1 (1993).

It is a compatibility variant of U+05D0 א (compatibility decomposition <compat>). NFC and NFD leave it alone, but NFKC and NFKD replace it with U+05D0 א. Search engines, identifier checks and username systems that apply NFKC will treat the two as the same text.

How to type ℵ

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Encodings & escapes

UTF-8 encoder →
UTF-8E2 84 B53 bytes
UTF-1621351 code unit
UTF-32000021354 bytes
HTML named&aleph;named character reference
HTML named&alefsym;named character reference
HTML decimal&#8501;
HTML hex&#x2135;
CSS\2135in content: "…"
JavaScript\u2135
JSON\u2135
Python\u2135
Python\N{ALEF SYMBOL}by name
Java / C#\u2135
C / C++\u2135universal character name
Rust / Swift / PHP\u{2135}
Go\u2135
Ruby\u2135
Excel / Sheets=UNICHAR(8501)
URL-encoded%E2%84%B5percent-encoded UTF-8
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Normalization forms

Normalizer →
NFCunchanged
NFDunchanged
NFKCU+05D0 א
NFKDU+05D0 א
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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+05D0אHebrew Letter Alef U+FB21ﬡHebrew Letter Wide Alef
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Nearby in Letterlike Symbols

All in block →
U+212FℯScript Small E U+2130ℰScript Capital E U+2131ℱScript Capital F U+2132ℲTurned Capital F U+2133ℳScript Capital M U+2134ℴScript Small O U+2136ℶBet Symbol U+2137ℷGimel Symbol U+2138ℸDalet Symbol U+2139ℹInformation Source U+213A℺Rotated Capital Q U+213B℻Facsimile Sign