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Description: Lemma 2 for cnlmod . (Contributed by AV, 20-Sep-2021)
| Ref | Expression | ||
|---|---|---|---|
| Hypothesis | cnlmod.w | ||
| Assertion | cnlmodlem2 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cnlmod.w | ||
| 2 | addex | ||
| 3 | qdass | ||
| 4 | 1 3 | eqtri | |
| 5 | 4 | lmodplusg | |
| 6 | 5 | eqcomd | |
| 7 | 2 6 | ax-mp |