U+22AE • logic
Does not force (⊮) is a symbol used in logic and set theory to indicate that a condition does not force a formula to hold in a forcing extension. It negates the forcing relation, important in forcing arguments and model theory.
The Symbol For Does Not Force (⊮) 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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