Double Integral ∬

U+222C
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Symbol Meaning

Double Integral. Mathematical Operators.

The symbol “Double Integral” is included in the “Integrals” subblock of the “Mathematical Operators” block and was approved as part of Unicode version 1.1 in 1993.

Unicode Name Double Integral
Unicode Number
HTML Code
CSS Code
Entity ∬
Unicode Block Mathematical Operators
Unicode Subblock Integrals
Unicode Version 1.1 (1993)
Version 1.1
Block Mathematical Operators
Type of paired mirror bracket (bidi) None
Composition Exclusion No
Case change 222C
Simple case change 222C
Math +
Grapheme_Base +
age 1.1
scripts Common
Encoding hex dec (bytes) dec binary
UTF-8 E2 88 AC 226 136 172 14846124 11100010 10001000 10101100
UTF-16BE 22 2C 34 44 8748 00100010 00101100
UTF-16LE 2C 22 44 34 11298 00101100 00100010
UTF-32BE 00 00 22 2C 0 0 34 44 8748 00000000 00000000 00100010 00101100
UTF-32LE 2C 22 00 00 44 34 0 0 740425728 00101100 00100010 00000000 00000000

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