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Theorem nakunaku 256

Description: Double negation is a functor. (Contributed by la korvo, 4-Jan-2025.)

**Assertion**
Ref	Expression
nakunaku	⊢ ganai broda gi naku naku broda

**Proof of Theorem nakunaku**
Step	Hyp	Ref	Expression
1		id 18	. 2 ⊢ ganai naku broda gi naku broda
2	1	con2i 255	1 ⊢ ganai broda gi naku naku broda

Colors of variables: sumti selbri bridi

Syntax hints: naku bnk 236

This theorem was proved from axioms: ax-mp 10 ax-k 11 ax-s 15 ax-sdo 245 ax-efq 248

This theorem is referenced by: nakunakui 257