U+2280 • mathematics
The 'Does Not Precede' symbol (⊀) is used in order theory and mathematics to indicate that one element does not precede another in a given ordering. It negates the 'precedes' relation.
The Symbol For Does Not Precede (⊀) is a unicode character in the Basic Multilingual Plane Plane. It is found in the Mathematical Operators block and was approved as part of Unicode Version 1.1 in 1993
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