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Theorem du-refl 171

Description: {du} is reflexive. (Contributed by la korvo, 16-Aug-2023.)

Assertion

Ref	Expression
du-refl	⊢ ko'a du ko'a

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Proof of Theorem du-refl

Step	Hyp	Ref	Expression
1		ax-du-refl 170	1 ⊢ ko'a du ko'a

Colors of variables: sumti selbri bridi

This theorem was proved from axioms:  ax-du-refl 170

This theorem is referenced by:  ceihi  179  ce-left  271  ce-right  272

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