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| Description: Lemma for unbnn 4521. The value of the function |
| Ref | Expression |
|---|---|
| unblem.1 |
|
| unblem.2 |
|
| Ref | Expression |
|---|---|
| unblem2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fveq2 3709 |
. . . 4
| |
| 2 | 1 | eleq1d 1532 |
. . 3
|
| 3 | fveq2 3709 |
. . . 4
| |
| 4 | 3 | eleq1d 1532 |
. . 3
|
| 5 | fveq2 3709 |
. . . 4
| |
| 6 | 5 | eleq1d 1532 |
. . 3
|
| 7 | onint 2996 |
. . . . 5
| |
| 8 | omsson 3126 |
. . . . . 6
| |
| 9 | sstr 2062 |
. . . . . 6
| |
| 10 | 8, 9 | mpan2 694 |
. . . . 5
|
| 11 | peano1 3139 |
. . . . . . . . 9
| |
| 12 | eleq1 1526 |
. . . . . . . . . . 11
| |
| 13 | 12 | rexbidv 1656 |
. . . . . . . . . 10
|
| 14 | 13 | rcla4v 1864 |
. . . . . . . . 9
|
| 15 | 11, 14 | ax-mp 7 |
. . . . . . . 8
|
| 16 | df-rex 1642 |
. . . . . . . 8
| |
| 17 | 15, 16 | sylib 198 |
. . . . . . 7
|
| 18 | pm3.26 319 |
. . . . . . . 8
| |
| 19 | 18 | 19.22i 1036 |
. . . . . . 7
|
| 20 | 17, 19 | syl 10 |
. . . . . 6
|
| 21 | ne0 2278 |
. . . . . 6
| |
| 22 | 20, 21 | sylibr 200 |
. . . . 5
|
| 23 | 7, 10, 22 | syl2an 454 |
. . . 4
|
| 24 | fr0t 3937 |
. . . . . . 7
| |
| 25 | unblem.2 |
. . . . . . . 8
| |
| 26 | 25 | fveq1i 3710 |
. . . . . . 7
|
| 27 | 24, 26 | syl5req 1512 |
. . . . . 6
|
| 28 | 27 | eleq1d 1532 |
. . . . 5
|
| 29 | 28 | ibi 590 |
. . . 4
|
| 30 | 23, 29 | syl 10 |
. . 3
|
| 31 | ax-17 968 |
. . . . . . . . . 10
| |
| 32 | ax-17 968 |
. . . . . . . . . 10
| |
| 33 | ax-17 968 |
. . . . . . . . . . . 12
| |
| 34 | unblem.1 |
. . . . . . . . . . . . . 14
| |
| 35 | 34, 32 | hbfv 3714 |
. . . . . . . . . . . . 13
|
| 36 | 35 | hbsuc 3030 |
. . . . . . . . . . . 12
|
| 37 | 33, 36 | hbdif 2151 |
. . . . . . . . . . 11
|
| 38 | 37 | hbint 2533 |
. . . . . . . . . 10
|
| 39 | suceq 3024 |
. . . . . . . . . . . 12
| |
| 40 | 39 | difeq2d 2149 |
. . . . . . . . . . 11
|
| 41 | 40 | inteqd 2528 |
. . . . . . . . . 10
|
| 42 | 31, 32, 38, 25, 41 | frsucopab 3939 |
. . . . . . . . 9
|
| 43 | 42 | eqcomd 1472 |
. . . . . . . 8
|
| 44 | 43 | eleq1d 1532 |
. . . . . . 7
|
| 45 | 44 | ex 373 |
. . . . . 6
|
| 46 | 45 | ibd 592 |
. . . . 5
|
| 47 | unblem1 4517 |
. . . . 5
| |
| 48 | 46, 47 | syl5 21 |
. . . 4
|
| 49 | 48 | exp3a 375 |
. . 3
|
| 50 | 2, 4, 6, 30, 49 | finds2 3148 |
. 2
|
| 51 | 50 | com12 11 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: unblem3 4519 unblem4 4520 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 959 ax-gen 960 ax-8 961 ax-9 962 ax-10 963 ax-11 964 ax-12 965 ax-13 966 ax-14 967 ax-17 968 ax-4 970 ax-5o 972 ax-6o 975 ax-9o 1119 ax-10o 1136 ax-16 1206 ax-11o 1213 ax-ext 1452 ax-rep 2683 ax-sep 2693 ax-nul 2700 ax-pow 2732 ax-pr 2769 ax-un 2857 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-3or 774 df-3an 775 df-ex 978 df-sb 1168 df-eu 1375 df-mo 1376 df-clab 1457 df-cleq 1462 df-clel 1465 df-ne 1579 df-ral 1641 df-rex 1642 df-rab 1644 df-v 1803 df-sbc 1932 df-dif 2039 df-un 2040 df-in 2041 df-ss 2043 df-nul 2271 df-if 2352 df-pw 2392 df-sn 2402 df-pr 2403 df-tp 2405 df-op 2406 df-uni 2494 df-int 2524 df-iun 2558 df-br 2610 df-opab 2657 df-tr 2671 df-eprel 2821 df-id 2824 df-po 2831 df-so 2841 df-fr 2907 df-we 2924 df-ord 2941 df-on 2942 df-lim 2943 df-suc 2944 df-om 3122 df-xp 3174 df-rel 3175 df-cnv 3176 df-co 3177 df-dm 3178 df-rn 3179 df-res 3180 df-ima 3181 df-fun 3182 df-fn 3183 df-fv 3188 df-rdg 3917 |