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| Mirrors > Home > ILE Home > Th. List > phplem4dom | Unicode version | ||
| Description: Dominance of successors implies dominance of the original natural numbers. (Contributed by Jim Kingdon, 1-Sep-2021.) |
| Ref | Expression |
|---|---|
| phplem4dom |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | peano2 4742 |
. . . . . 6
| |
| 2 | 1 | adantl 277 |
. . . . 5
|
| 3 | brdomg 7032 |
. . . . 5
| |
| 4 | 2, 3 | syl 14 |
. . . 4
|
| 5 | 4 | biimpa 296 |
. . 3
|
| 6 | simpr 110 |
. . . . . . 7
| |
| 7 | 2 | ad2antrr 492 |
. . . . . . 7
|
| 8 | sssucid 4560 |
. . . . . . . 8
| |
| 9 | 8 | a1i 9 |
. . . . . . 7
|
| 10 | simplll 539 |
. . . . . . 7
| |
| 11 | f1imaen2g 7080 |
. . . . . . 7
| |
| 12 | 6, 7, 9, 10, 11 | syl22anc 1279 |
. . . . . 6
|
| 13 | 12 | ensymd 7070 |
. . . . 5
|
| 14 | difexg 4275 |
. . . . . . 7
| |
| 15 | 7, 14 | syl 14 |
. . . . . 6
|
| 16 | nnord 4759 |
. . . . . . . . . 10
| |
| 17 | orddif 4694 |
. . . . . . . . . 10
| |
| 18 | 16, 17 | syl 14 |
. . . . . . . . 9
|
| 19 | 18 | imaeq2d 5126 |
. . . . . . . 8
|
| 20 | 10, 19 | syl 14 |
. . . . . . 7
|
| 21 | f1fn 5600 |
. . . . . . . . . . . 12
| |
| 22 | 21 | adantl 277 |
. . . . . . . . . . 11
|
| 23 | sucidg 4561 |
. . . . . . . . . . . 12
| |
| 24 | 10, 23 | syl 14 |
. . . . . . . . . . 11
|
| 25 | fnsnfv 5762 |
. . . . . . . . . . 11
| |
| 26 | 22, 24, 25 | syl2anc 415 |
. . . . . . . . . 10
|
| 27 | 26 | difeq2d 3347 |
. . . . . . . . 9
|
| 28 | df-f1 5382 |
. . . . . . . . . . . 12
| |
| 29 | 28 | simprbi 275 |
. . . . . . . . . . 11
|
| 30 | imadif 5461 |
. . . . . . . . . . 11
| |
| 31 | 29, 30 | syl 14 |
. . . . . . . . . 10
|
| 32 | 31 | adantl 277 |
. . . . . . . . 9
|
| 33 | 27, 32 | eqtr4d 2274 |
. . . . . . . 8
|
| 34 | f1f 5598 |
. . . . . . . . . . 11
| |
| 35 | 34 | adantl 277 |
. . . . . . . . . 10
|
| 36 | imassrn 5137 |
. . . . . . . . . . 11
| |
| 37 | frn 5542 |
. . . . . . . . . . 11
| |
| 38 | 36, 37 | sstrid 3259 |
. . . . . . . . . 10
|
| 39 | 35, 38 | syl 14 |
. . . . . . . . 9
|
| 40 | 39 | ssdifd 3365 |
. . . . . . . 8
|
| 41 | 33, 40 | eqsstrrd 3285 |
. . . . . . 7
|
| 42 | 20, 41 | eqsstrd 3284 |
. . . . . 6
|
| 43 | ssdomg 7065 |
. . . . . 6
| |
| 44 | 15, 42, 43 | sylc 62 |
. . . . 5
|
| 45 | endomtr 7077 |
. . . . 5
| |
| 46 | 13, 44, 45 | syl2anc 415 |
. . . 4
|
| 47 | simpllr 540 |
. . . . . 6
| |
| 48 | 35, 24 | ffvelcdmd 5844 |
. . . . . 6
|
| 49 | phplem3g 7157 |
. . . . . 6
| |
| 50 | 47, 48, 49 | syl2anc 415 |
. . . . 5
|
| 51 | 50 | ensymd 7070 |
. . . 4
|
| 52 | domentr 7078 |
. . . 4
| |
| 53 | 46, 51, 52 | syl2anc 415 |
. . 3
|
| 54 | 5, 53 | exlimddv 1954 |
. 2
|
| 55 | 54 | ex 115 |
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-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-rab 2537 df-v 2823 df-sbc 3052 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-br 4131 df-opab 4193 df-tr 4230 df-id 4438 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-er 6807 df-en 7023 df-dom 7024 |
| This theorem is used by: php5dom 7164 |
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