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Description: Closure of a word with permuted symbols. (Contributed by Thierry Arnoux, 27-May-2025)
| Ref | Expression | ||
|---|---|---|---|
| Hypotheses | wrdpmcl.1 | ||
| wrdpmcl.2 | |||
| wrdpmcl.3 | |||
| Assertion | wrdpmcl |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | wrdpmcl.1 | ||
| 2 | wrdpmcl.2 | ||
| 3 | wrdpmcl.3 | ||
| 4 | eqidd | ||
| 5 | 4 3 | wrdfd | |
| 6 | f1oeq23 | ||
| 7 | 1 1 6 | mp2an | |
| 8 | 2 7 | sylib | |
| 9 | f1of | ||
| 10 | 8 9 | syl | |
| 11 | 5 10 | fcod | |
| 12 | iswrdi | ||
| 13 | 11 12 | syl |