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| Mirrors > Home > MPE Home > Th. List > funcnvs1 | Structured version Visualization version GIF version | ||
| Description: The converse of a singleton word is a function. (Contributed by AV, 22-Jan-2021.) |
| Ref | Expression |
|---|---|
| funcnvs1 | ⊢ Fun ◡〈“𝐴”〉 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | funcnvsn 6575 | . 2 ⊢ Fun ◡{〈0, ( I ‘𝐴)〉} | |
| 2 | df-s1 14624 | . . . 4 ⊢ 〈“𝐴”〉 = {〈0, ( I ‘𝐴)〉} | |
| 3 | 2 | cnveqi 5851 | . . 3 ⊢ ◡〈“𝐴”〉 = ◡{〈0, ( I ‘𝐴)〉} |
| 4 | 3 | funeqi 6546 | . 2 ⊢ (Fun ◡〈“𝐴”〉 ↔ Fun ◡{〈0, ( I ‘𝐴)〉}) |
| 5 | 1, 4 | mpbir 234 | 1 ⊢ Fun ◡〈“𝐴”〉 |
| Colors of variables: wff setvar class |
| Syntax hints: {csn 4585 〈cop 4591 I cid 5546 ◡ccnv 5651 Fun wfun 6519 ‘cfv 6525 0cc0 11088 〈“cs1 14623 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-ext 2737 ax-sep 5251 ax-pr 5395 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-sb 2094 df-mo 2569 df-clab 2744 df-cleq 2757 df-clel 2840 df-ral 3080 df-rex 3090 df-rab 3418 df-v 3459 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-nul 4289 df-if 4484 df-sn 4586 df-pr 4588 df-op 4592 df-br 5106 df-opab 5168 df-id 5547 df-xp 5658 df-rel 5659 df-cnv 5660 df-co 5661 df-fun 6527 df-s1 14624 |
| This theorem is referenced by: uhgrwkspthlem1 30011 1trld 30402 |
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