Tee (symbol)

The tee (⊤), also called down tack (as opposed to the up tack) or verum is a symbol used to represent:

单词	Down tack
释义	Down tack 英语百科 Tee (symbol) The tee (⊤), also called down tack (as opposed to the up tack) or verum is a symbol used to represent: The top element in lattice theory. A logical constant denoting a tautology in logic. The top type in type theory.
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Down tack