U+2AE4 • mathematics
Symbol named Vertical Bar Double Left Turnstile, depicting a vertical bar followed by a double left turnstile. Used in logic or proof theory to represent entailment or derivability with specific qualifiers indicated by the combination of bars and turnstiles. It is distinct from other turnstile symbols by this combination.
The Symbol For Vertical Bar Double Left Turnstile (⫤) is a unicode character in the Basic Multilingual Plane Plane. It is found in the Supplemental Mathematical Operators block and was approved as part of Unicode Version 3.2 in 2002
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