bu - brismu bridi

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Theorem bu 4

Description: Normal form for unary selbri. (Contributed by la korvo, 14-Aug-2023.)

**Assertion**
Ref	Expression
bu	bridi ko'a bu'a

**Proof of Theorem bu**
Step	Hyp	Ref	Expression
1		btb 3	1 bridi ko'a bu'a

Colors of variables: sumti selbri bridi

Syntax hints: tsb 1 btb 3

This theorem is referenced by: dui 252 duis 253 duri 254 duris 255 du-refl 256 du-trans 257 du-symi 259 zilcmi-nomei 466 cmima-zilcmi 467 selcmi-zilcmi 468 ro-quanti 478 ro-quantri 479 fatcii 508 fatciri 509 frinynahu-kacnahul 707 frinynahu-kacnahur 708