isod-lem - brismu bridi

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Theorem isod-lem 93

Description: Lemma for isod 94 known as theorem impbid21d in [ILE] p. 0. (Contributed by la korvo, 31-Jul-2023.)

**Hypotheses**
Ref	Expression
isod-lem.0	⊢ ganai brode gi ganai brodi gi brodo
isod-lem.1	⊢ ganai broda gi ganai brodo gi brodi

**Assertion**
Ref	Expression
isod-lem	⊢ ganai broda gi ganai brode gi go brodi gi brodo

**Proof of Theorem isod-lem**
Step	Hyp	Ref	Expression
1		isod-lem.0	. . 3 ⊢ ganai brode gi ganai brodi gi brodo
2	1	ki 12	. 2 ⊢ ganai broda gi ganai brode gi ganai brodi gi brodo
3		isod-lem.1	. . 3 ⊢ ganai broda gi ganai brodo gi brodi
4	3	kd 27	. 2 ⊢ ganai broda gi ganai brode gi ganai brodo gi brodi
5	2, 4	isodd 92	1 ⊢ ganai broda gi ganai brode gi go brodi gi brodo

Colors of variables: sumti selbri bridi

Syntax hints: ganai bgan 9

This theorem was proved from axioms: ax-mp 10 ax-k 11 ax-s 15 ax-ge-re 49 ax-ge-in 50

This theorem depends on definitions: df-go 83

This theorem is referenced by: isod 94