U+1D561 "𝕡" Mathematical Double-Struck Small P Unicode Character

Unicode Version 17.0

𝕡

U+1D561 "𝕡" Mathematical Double-Struck Small P is a stylized letter belonging to the Mathematical Alphanumeric Symbols block, used primarily in mathematical contexts to denote a specific set or variable with a bold or blackboard bold appearance. This double‑struck form, characterized by its thick vertical strokes and often associated with open or closed sets, is commonly employed in advanced mathematics to represent objects such as the set of primes, probability measures, or other specialized notation in linear algebra and number theory. Its inclusion in Unicode ensures that mathematicians and researchers can reliably display and exchange such symbols across different digital platforms without relying on font‑specific representations.

General Properties

Code Point U+1D561
Version Added 3.1
Name Mathematical Double-Struck Small P
Block Mathematical Alphanumeric Symbols
General Category Lowercase Letter
Canonical Combining Class Not Reordered
Bidirectional Class Left To Right
Decomposition Type Font
Decomposition Mapping "p" U+0070 Latin Small Letter P

Encodings

HTML Decimal Encoding 𝕡
HTML Hex Encoding 𝕡
UTF-8 Encoding 0xF0 0x9D 0x95 0xA1
UTF-16 Encoding 0xD835 0xDD61
UTF-32 Encoding 0x0001D561
C/C++/Java Escape \ud835\udd61

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 "p" U+0070 Latin Small Letter P
NFKC Simple Casefold "p" U+0070 Latin Small Letter P
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 Rotated
Grapheme Base Yes
Grapheme Cluster Break Other
Word Break Alphabetic letter
Sentence Break Lower