zihoit - brismu bridi

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Theorem zihoit 477

Description: Delete the second place of a binary bridi. (Contributed by la korvo, 22-Aug-2024.)

**Hypothesis**
Ref	Expression
zihoit.0	⊢ ko'a bu'a ko'e

**Assertion**
Ref	Expression
zihoit	⊢ ko'a bu'a zi'o

**Proof of Theorem zihoit**
Step	Hyp	Ref	Expression
1		zihoit.0	. . . 4 ⊢ ko'a bu'a ko'e
2	1	seri 184	. . 3 ⊢ ko'e se bu'a ko'a
3	2	zihoi 476	. 2 ⊢ zi'o se bu'a ko'a
4	3	sei 183	1 ⊢ ko'a bu'a zi'o

Colors of variables: sumti selbri bridi

Syntax hints: tsb 1 tss 2 se sbs 181 zi'o sziho 474

This theorem was proved from axioms: ax-mp 10 ax-k 11 ax-s 15 ax-ge-le 43 ax-ge-re 44 ax-ge-in 45

This theorem depends on definitions: df-go 61 df-se 182 df-ziho 475

This theorem is referenced by: (None)