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Unicode character block
Mathematical Operators Range U+2200..U+22FFMathematical Operators is a Unicode block containing characters for mathematical, logical, and set notation.
Notably absent are the plus sign (+), greater than sign (>) and less than sign (<), due to them already appearing in the Basic Latin Unicode block, and the plus-or-minus sign (±), multiplication sign (×) and obelus (÷), due to them already appearing in the Latin-1 Supplement block, although a distinct minus sign (−) is included, semantically different from the Basic Latin hyphen-minus (-).
Variation sequences[edit]The Mathematical Operators block has sixteen 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+2205 EMPTY SET ∅ ∅︀ zero with long diagonal stroke overlay form U+2229 INTERSECTION ∩ ∩︀ with serifs U+222A UNION ∪ ∪︀ with serifs U+2268 LESS-THAN BUT NOT EQUAL TO ≨ ≨︀ with vertical stroke U+2269 GREATER-THAN BUT NOT EQUAL TO ≩ ≩︀ with vertical stroke U+2272 LESS-THAN OR EQUIVALENT TO ≲ ≲︀ following the slant of the lower leg U+2273 GREATER-THAN OR EQUIVALENT TO ≳ ≳︀ following the slant of the lower leg U+228A SUBSET OF WITH NOT EQUAL TO ⊊ ⊊︀ with stroke through bottom members U+228B SUPERSET OF WITH NOT EQUAL TO ⊋ ⊋︀ with stroke through bottom members U+2293 SQUARE CAP ⊓ ⊓︀ with serifs U+2294 SQUARE CUP ⊔ ⊔︀ with serifs U+2295 CIRCLED PLUS ⊕ ⊕︀ with white rim U+2297 CIRCLED TIMES ⊗ ⊗︀ with white rim U+229C CIRCLED EQUALS ⊜ ⊜︀ with equal sign touching the circle U+22DA LESS-THAN EQUAL TO OR GREATER-THAN ⋚ ⋚︀ with slanted equal U+22DB GREATER-THAN EQUAL TO OR LESS-THAN ⋛ ⋛︀ with slanted equalThe following Unicode-related documents record the purpose and process of defining specific characters in the Mathematical Operators block:
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