Miscellaneous Mathematical Symbols-B is a Unicode block containing miscellaneous mathematical symbols, including brackets, angles, and circle symbols.
Block
Variant The Miscellaneous Mathematical Symbols-B block has one variation sequence defined for a standardized variant. Variation selector-1 (VS1) (U+FE00) 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. Specifically
The last two symbols are used in combinatorial game theory
History The following Unicode-related documents record the purpose and process of defining specific characters in the Miscellaneous Mathematical Symbols-B block:
Version Count L2 ID WG2 ID Document 3.2 U+2980..2996, 2999..29D7, 29DC..29E5, 29E7..29FB 117 doc) N2093 N2103 N2191 N2195 N2191R txt) N2258 N2278 N2253 N2328 html) N2343 N2389R N4434 doc) N5330 U+2997..2998, 29D8..29DB, 29E6, 29FC..29FF 11 N2318 N2336 N2356 N2344 doc) N2389R
See also Mathematical operators and symbols in Unicode
References