U+213D "ℽ" Double-Struck Small Gamma Unicode Character

Unicode Version 17.0

U+213D "ℽ" Double-Struck Small Gamma is a specialized typographic symbol that represents the lowercase Greek letter gamma in a double-struck or blackboard bold style, a variant font typically used in mathematical and scientific contexts. It is part of the Letterlike Symbols block, which includes characters designed to resemble letters but serve as distinct symbols in technical notation. This particular gamma often denotes a specific number, function, or variable in fields such as number theory, combinatorics, and physics, where double-struck letters help differentiate mathematical constants from ordinary variables. Unlike the standard Greek gamma, its double-struck form visually emphasizes its role as a conventionally defined or abstract entity, though it is less commonly used than its uppercase counterpart or the single-struck gamma in everyday writing. Its inclusion in Unicode ensures consistent representation across digital platforms for precise mathematical communication.

General Properties

Code Point U+213D
Version Added 3.2
Name Double-Struck Small Gamma
Block Letterlike Symbols
General Category Lowercase Letter
Canonical Combining Class Not Reordered
Bidirectional Class Left To Right
Decomposition Type Font
Decomposition Mapping "γ" U+03B3 Greek Small Letter Gamma

Encodings

HTML Decimal Encoding ℽ
HTML Hex Encoding ℽ
UTF-8 Encoding 0xE2 0x84 0xBD
UTF-16 Encoding 0x213D
UTF-32 Encoding 0x0000213D
C/C++/Java Escape \u213d

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 "γ" U+03B3 Greek Small Letter Gamma
NFKC Simple Casefold "γ" U+03B3 Greek Small Letter Gamma
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 Lower