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| Mirrors > Home > ILE Home > Th. List > peano2nnnn | Unicode version | ||
| Description: A successor of a positive integer is a positive integer. This is a counterpart to peano2nn 9316 designed for real number axioms which involve to natural numbers (notably, axcaucvg 8267). (Contributed by Jim Kingdon, 14-Jul-2021.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| peano1nnnn.n |
|
| Ref | Expression |
|---|---|
| peano2nnnn |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | peano1nnnn.n |
. . . . . 6
| |
| 2 | 1 | eleq2i 2305 |
. . . . 5
|
| 3 | elintg 3978 |
. . . . 5
| |
| 4 | 2, 3 | bitrid 192 |
. . . 4
|
| 5 | 4 | ibi 176 |
. . 3
|
| 6 | vex 2824 |
. . . . . . . 8
| |
| 7 | eleq2 2302 |
. . . . . . . . 9
| |
| 8 | eleq2 2302 |
. . . . . . . . . 10
| |
| 9 | 8 | raleqbi1dv 2761 |
. . . . . . . . 9
|
| 10 | 7, 9 | anbi12d 477 |
. . . . . . . 8
|
| 11 | 6, 10 | elab 2970 |
. . . . . . 7
|
| 12 | 11 | simprbi 275 |
. . . . . 6
|
| 13 | oveq1 6092 |
. . . . . . . 8
| |
| 14 | 13 | eleq1d 2307 |
. . . . . . 7
|
| 15 | 14 | rspcva 2927 |
. . . . . 6
|
| 16 | 12, 15 | sylan2 286 |
. . . . 5
|
| 17 | 16 | expcom 116 |
. . . 4
|
| 18 | 17 | ralimia 2611 |
. . 3
|
| 19 | 5, 18 | syl 14 |
. 2
|
| 20 | df-1 8187 |
. . . . 5
| |
| 21 | 1sr 8118 |
. . . . . 6
| |
| 22 | 0r 8117 |
. . . . . 6
| |
| 23 | opexg 4368 |
. . . . . 6
| |
| 24 | 21, 22, 23 | mp2an 430 |
. . . . 5
|
| 25 | 20, 24 | eqeltri 2311 |
. . . 4
|
| 26 | addvalex 8211 |
. . . 4
| |
| 27 | 25, 26 | mpan2 429 |
. . 3
|
| 28 | 1 | eleq2i 2305 |
. . . 4
|
| 29 | elintg 3978 |
. . . 4
| |
| 30 | 28, 29 | bitrid 192 |
. . 3
|
| 31 | 27, 30 | syl 14 |
. 2
|
| 32 | 19, 31 | mpbird 167 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-coll 4246 ax-sep 4249 ax-nul 4259 ax-pow 4311 ax-pr 4346 ax-un 4578 ax-setind 4684 ax-iinf 4735 |
| This proof depends on definitions: df-bi 117 df-dc 847 df-3or 1010 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-ral 2533 df-rex 2534 df-reu 2535 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-iun 4014 df-br 4131 df-opab 4193 df-mpt 4194 df-tr 4230 df-eprel 4434 df-id 4438 df-po 4441 df-iso 4442 df-iord 4511 df-on 4513 df-suc 4516 df-iom 4738 df-xp 4780 df-rel 4781 df-cnv 4782 df-co 4783 df-dm 4784 df-rn 4785 df-res 4786 df-ima 4787 df-iota 5337 df-fun 5379 df-fn 5380 df-f 5381 df-f1 5382 df-fo 5383 df-f1o 5384 df-fv 5385 df-ov 6088 df-oprab 6089 df-mpo 6090 df-1st 6374 df-2nd 6375 df-recs 6576 df-irdg 6641 df-1o 6687 df-2o 6688 df-oadd 6691 df-omul 6692 df-er 6807 df-ec 6809 df-qs 6813 df-ni 7671 df-pli 7672 df-mi 7673 df-lti 7674 df-plpq 7711 df-mpq 7712 df-enq 7714 df-nqqs 7715 df-plqqs 7716 df-mqqs 7717 df-1nqqs 7718 df-rq 7719 df-ltnqqs 7720 df-enq0 7791 df-nq0 7792 df-0nq0 7793 df-plq0 7794 df-mq0 7795 df-inp 7833 df-i1p 7834 df-iplp 7835 df-enr 8093 df-nr 8094 df-0r 8098 df-1r 8099 df-c 8185 df-1 8187 df-add 8190 |
| This theorem is used by: nnindnn 8260 |
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