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Mirrors > Home > ILE Home > Th. List > freceq1 | Unicode version |
Description: Equality theorem for the finite recursive definition generator. (Contributed by Jim Kingdon, 30-May-2020.) |
Ref | Expression |
---|---|
freceq1 | frec frec |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simpl 102 | . . . . . . . . . . 11 | |
2 | 1 | fveq1d 5180 | . . . . . . . . . 10 |
3 | 2 | eleq2d 2107 | . . . . . . . . 9 |
4 | 3 | anbi2d 437 | . . . . . . . 8 |
5 | 4 | rexbidv 2327 | . . . . . . 7 |
6 | 5 | orbi1d 705 | . . . . . 6 |
7 | 6 | abbidv 2155 | . . . . 5 |
8 | 7 | mpteq2dva 3847 | . . . 4 |
9 | recseq 5921 | . . . 4 recs recs | |
10 | 8, 9 | syl 14 | . . 3 recs recs |
11 | 10 | reseq1d 4611 | . 2 recs recs |
12 | df-frec 5978 | . 2 frec recs | |
13 | df-frec 5978 | . 2 frec recs | |
14 | 11, 12, 13 | 3eqtr4g 2097 | 1 frec frec |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 97 wo 629 wceq 1243 wcel 1393 cab 2026 wrex 2307 cvv 2557 c0 3224 cmpt 3818 csuc 4102 com 4313 cdm 4345 cres 4347 cfv 4902 recscrecs 5919 freccfrec 5977 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-ia2 100 ax-ia3 101 ax-io 630 ax-5 1336 ax-7 1337 ax-gen 1338 ax-ie1 1382 ax-ie2 1383 ax-8 1395 ax-10 1396 ax-11 1397 ax-i12 1398 ax-bndl 1399 ax-4 1400 ax-17 1419 ax-i9 1423 ax-ial 1427 ax-i5r 1428 ax-ext 2022 |
This theorem depends on definitions: df-bi 110 df-tru 1246 df-nf 1350 df-sb 1646 df-clab 2027 df-cleq 2033 df-clel 2036 df-nfc 2167 df-ral 2311 df-rex 2312 df-v 2559 df-in 2924 df-uni 3581 df-br 3765 df-opab 3819 df-mpt 3820 df-res 4357 df-iota 4867 df-fv 4910 df-recs 5920 df-frec 5978 |
This theorem is referenced by: iseqeq1 9214 iseqeq2 9215 iseqeq3 9216 iseqeq4 9217 iseqval 9220 |
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