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Double-struck symbols

The following table shows Unicode symbol, HTML code, CSS code, and official HTML name for the characters categorized under double-struck symbols.

Double-struck symbols

Symbol
HTML Code
HTML Entity
CSS Code
Hex Code
Unicode
Description
HTML CODE
ℂ
ENTITY
ℂ
CSS CODE
\2102
HEX CODE
ℂ
UNICODE
U+02102
double-struck capital c, the set of complex numbers
HTML CODE
ℍ
ENTITY
ℍ
CSS CODE
\210D
HEX CODE
ℍ
UNICODE
U+0210D
double-struck capital h
HTML CODE
ℕ
ENTITY
ℕ
CSS CODE
\2115
HEX CODE
ℕ
UNICODE
U+02115
double-struck capital n, natural number
HTML CODE
ℙ
ENTITY
ℙ
CSS CODE
\2119
HEX CODE
ℙ
UNICODE
U+02119
double-struck capital p
HTML CODE
ℚ
ENTITY
ℚ
CSS CODE
\211A
HEX CODE
ℚ
UNICODE
U+0211A
double-struck capital q, the set of rational numbers
HTML CODE
ℝ
ENTITY
ℝ
CSS CODE
\211D
HEX CODE
ℝ
UNICODE
U+0211D
double-struck capital r, the set of real numbers
HTML CODE
ℤ
ENTITY
ℤ
CSS CODE
\2124
HEX CODE
ℤ
UNICODE
U+02124
double-struck capital z, the set of integers
HTML CODE
ℼ
ENTITY
CSS CODE
\213C
HEX CODE
ℼ
UNICODE
U+0213C
double-struck small pi
HTML CODE
ℽ
ENTITY
CSS CODE
\213D
HEX CODE
ℽ
UNICODE
U+0213D
double-struck small gamma
HTML CODE
ℾ
ENTITY
CSS CODE
\213E
HEX CODE
ℾ
UNICODE
U+0213E
double-struck capital gamma
HTML CODE
ℿ
ENTITY
CSS CODE
\213F
HEX CODE
ℿ
UNICODE
U+0213F
double-struck capital pi
HTML CODE
⅀
ENTITY
CSS CODE
\2140
HEX CODE
⅀
UNICODE
U+02140
double-struck n-ary summation
HTML CODE
ⅅ
ENTITY
ⅅ
CSS CODE
\2145
HEX CODE
ⅅ
UNICODE
U+02145
double-struck italic capital d, sometimes used for the differential
HTML CODE
ⅆ
ENTITY
ⅆ
CSS CODE
\2146
HEX CODE
ⅆ
UNICODE
U+02146
double-struck italic small d, sometimes used for the differential
HTML CODE
ⅇ
ENTITY
ⅇ
CSS CODE
\2147
HEX CODE
ⅇ
UNICODE
U+02147
double-struck italic small e, sometimes used for the natural exponent
HTML CODE
ⅈ
ENTITY
ⅈ
CSS CODE
\2148
HEX CODE
ⅈ
UNICODE
U+02148
double-struck italic small i, sometimes used for the imaginary unit
HTML CODE
ⅉ
ENTITY
CSS CODE
\2149
HEX CODE
ⅉ
UNICODE
U+02149
double-struck italic small j, sometimes used for the imaginary unit

References