ℛ
See also:
Appendix:Variations of "r"
ℛ
U+211B
,
ℛ
SCRIPT CAPITAL R
←
ℚ
[U+211A]
Letterlike Symbols
ℜ
→
[U+211C]
Translingual
Symbol
ℛ
(
mathematics
)
The
Riemann integral
.