Miscellaneous Mathematical Symbols-B
Miscellaneous Mathematical Symbols-B is a Unicode block containing miscellaneous mathematical symbols, including brackets, angles, and circle symbols.
Variant
The Miscellaneous Mathematical Symbols-B block has one variation sequence defined for a standardized variant.Variation selector-1 can be used with to request a glyph where the parallel lines touch the circle.
Usage
Some of these symbols are used in Z notation. SpecificallyThe last two symbols are used in combinatorial game theory