Supplemental Mathematical Operators is a Unicode block containing various mathematical symbols, including N-ary operators, summations and integrals, intersections and unions, logical and relational operators, and subset/superset relations.
The Supplemental Mathematical Operators block has eight variation sequences defined for standardized variants.[3][4] They use U+FE00 VARIATION SELECTOR-1 (VS01) to denote variant symbols (depending on the font):
Variation sequences
Base character
Base
+VS01
Description
U+2A3C INTERIOR PRODUCT
⨼
⨼︀
tall variant with narrow foot
U+2A3D RIGHTHAND INTERIOR PRODUCT
⨽
⨽︀
tall variant with narrow foot
U+2A9D SIMILAR OR LESS-THAN
⪝
⪝︀
with similar following the slant of the upper leg
U+2A9E SIMILAR OR GREATER-THAN
⪞
⪞︀
with similar following the slant of the upper leg
U+2AAC SMALLER THAN OR EQUAL TO
⪬
⪬︀
with slanted equal
U+2AAD LARGER THAN OR EQUAL TO
⪭
⪭︀
with slanted equal
U+2ACB SUBSET OF ABOVE NOT EQUAL TO
⫋
⫋︀
with stroke through bottom members
U+2ACC SUPERSET OF ABOVE NOT EQUAL TO
⫌
⫌︀
with stroke through bottom members
History
The following Unicode-related documents record the purpose and process of defining specific characters in the Supplemental Mathematical Operators block:
Suignard, Michel (2001-09-10), "T.9 B.1 List of combining characters/Variation selectors", Comments accompanying the US positive vote on the FPDAM 1 to ISO/IEC 10646-1:2001
