U+2AD1 • mathematics
Symbol called Closed Subset or Equal To, combining a closed subset symbol with an equality condition. It is used in set theory or logic to express a subset relation that is closed and includes equality. This symbol is distinct from standard subset or equal to symbols by its closed form and combined meaning.
The Symbol For Closed Subset or Equal To (⫑) is a unicode character in the Basic Multilingual Plane Plane. It is found in the Supplemental Mathematical Operators block and was approved as part of Unicode Version 3.2 in 2002
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