U+2136 "ℶ" Bet Symbol Unicode Character

Unicode Version 17.0

U+2136 "ℶ" Bet Symbol is a typographic representation of the second letter of the Hebrew alphabet, aleph-bet, and is used primarily in mathematical and linguistic contexts to denote the second transfinite cardinal number in set theory, following the aleph numbers introduced by Georg Cantor. In notation, it specifically represents the cardinality of the continuum or other large infinite sets within the beth sequence, where beth‑zero equals aleph‑null and beth‑one equals the cardinality of the real numbers. Unlike the aleph symbol, which has a distinct Unicode code point, the bet symbol appears in mathematical works to clarify which infinite cardinal hierarchy is being referenced. It is also sometimes used in Jewish textual studies to represent the letter bet, though in modern digital text it may require specific fonts for proper rendering.

General Properties

Code Point U+2136
Version Added 1.1
Name Bet Symbol
Unicode 1.0 Name Second Transfinite Cardinal
Block Letterlike Symbols
General Category Other Letter
Canonical Combining Class Not Reordered
Bidirectional Class Left To Right
Decomposition Type Compat
Decomposition Mapping "ב" U+05D1 Hebrew Letter Bet

Encodings

HTML Decimal Encoding ℶ
HTML Hex Encoding ℶ
UTF-8 Encoding 0xE2 0x84 0xB6
UTF-16 Encoding 0x2136
UTF-32 Encoding 0x00002136
C/C++/Java Escape \u2136

Unicode Properties

NFC Quick Check Yes
NFD Quick Check Yes
Numeric Type None
Numeric Value NaN
Line Break Alphabetic
Changes When NFKC Casefolded Yes
NFKC Casefold "ב" U+05D1 Hebrew Letter Bet
NFKC Simple Casefold "ב" U+05D1 Hebrew Letter Bet
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 Upright
Grapheme Base Yes
Grapheme Cluster Break Other
Word Break Alphabetic letter
Sentence Break OLetter