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Mirrors > Home > ILE Home > Th. List > fzdifsuc | Unicode version |
Description: Remove a successor from the end of a finite set of sequential integers. (Contributed by AV, 4-Sep-2019.) |
Ref | Expression |
---|---|
fzdifsuc |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elfzelz 9173 |
. . 3
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2 | 1 | adantl 271 |
. 2
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3 | eldifi 3104 |
. . . 4
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4 | elfzelz 9173 |
. . . 4
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5 | 3, 4 | syl 14 |
. . 3
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6 | 5 | adantl 271 |
. 2
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7 | simpr 108 |
. . . 4
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8 | eluzel2 8757 |
. . . . 5
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9 | 8 | adantr 270 |
. . . 4
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10 | eluzelz 8761 |
. . . . 5
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11 | 10 | adantr 270 |
. . . 4
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12 | elfz 9163 |
. . . 4
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13 | 7, 9, 11, 12 | syl3anc 1170 |
. . 3
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14 | eldif 2991 |
. . . . . . 7
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15 | 11 | peano2zd 8605 |
. . . . . . . . 9
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16 | elfz 9163 |
. . . . . . . . 9
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17 | 7, 9, 15, 16 | syl3anc 1170 |
. . . . . . . 8
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18 | velsn 3433 |
. . . . . . . . . . 11
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |
19 | 18 | notbii 627 |
. . . . . . . . . 10
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20 | nesym 2294 |
. . . . . . . . . 10
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21 | 19, 20 | bitr4i 185 |
. . . . . . . . 9
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22 | 21 | a1i 9 |
. . . . . . . 8
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23 | 17, 22 | anbi12d 457 |
. . . . . . 7
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24 | 14, 23 | syl5bb 190 |
. . . . . 6
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25 | anass 393 |
. . . . . 6
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26 | 24, 25 | syl6bb 194 |
. . . . 5
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27 | zltlen 8559 |
. . . . . . 7
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28 | 7, 15, 27 | syl2anc 403 |
. . . . . 6
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29 | 28 | anbi2d 452 |
. . . . 5
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30 | 26, 29 | bitr4d 189 |
. . . 4
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31 | zleltp1 8539 |
. . . . . 6
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32 | 7, 11, 31 | syl2anc 403 |
. . . . 5
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33 | 32 | anbi2d 452 |
. . . 4
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34 | 30, 33 | bitr4d 189 |
. . 3
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35 | 13, 34 | bitr4d 189 |
. 2
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36 | 2, 6, 35 | eqrdav 2082 |
1
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-in1 577 ax-in2 578 ax-io 663 ax-5 1377 ax-7 1378 ax-gen 1379 ax-ie1 1423 ax-ie2 1424 ax-8 1436 ax-10 1437 ax-11 1438 ax-i12 1439 ax-bndl 1440 ax-4 1441 ax-13 1445 ax-14 1446 ax-17 1460 ax-i9 1464 ax-ial 1468 ax-i5r 1469 ax-ext 2065 ax-sep 3916 ax-pow 3968 ax-pr 3992 ax-un 4216 ax-setind 4308 ax-cnex 7181 ax-resscn 7182 ax-1cn 7183 ax-1re 7184 ax-icn 7185 ax-addcl 7186 ax-addrcl 7187 ax-mulcl 7188 ax-mulrcl 7189 ax-addcom 7190 ax-mulcom 7191 ax-addass 7192 ax-mulass 7193 ax-distr 7194 ax-i2m1 7195 ax-0lt1 7196 ax-1rid 7197 ax-0id 7198 ax-rnegex 7199 ax-precex 7200 ax-cnre 7201 ax-pre-ltirr 7202 ax-pre-ltwlin 7203 ax-pre-lttrn 7204 ax-pre-apti 7205 ax-pre-ltadd 7206 ax-pre-mulgt0 7207 |
This theorem depends on definitions: df-bi 115 df-3or 921 df-3an 922 df-tru 1288 df-fal 1291 df-nf 1391 df-sb 1688 df-eu 1946 df-mo 1947 df-clab 2070 df-cleq 2076 df-clel 2079 df-nfc 2212 df-ne 2250 df-nel 2345 df-ral 2358 df-rex 2359 df-reu 2360 df-rab 2362 df-v 2612 df-sbc 2825 df-dif 2984 df-un 2986 df-in 2988 df-ss 2995 df-pw 3402 df-sn 3422 df-pr 3423 df-op 3425 df-uni 3622 df-int 3657 df-br 3806 df-opab 3860 df-mpt 3861 df-id 4076 df-xp 4397 df-rel 4398 df-cnv 4399 df-co 4400 df-dm 4401 df-rn 4402 df-res 4403 df-ima 4404 df-iota 4917 df-fun 4954 df-fn 4955 df-f 4956 df-fv 4960 df-riota 5519 df-ov 5566 df-oprab 5567 df-mpt2 5568 df-pnf 7269 df-mnf 7270 df-xr 7271 df-ltxr 7272 df-le 7273 df-sub 7400 df-neg 7401 df-reap 7794 df-ap 7801 df-inn 8159 df-n0 8408 df-z 8485 df-uz 8753 df-fz 9158 |
This theorem is referenced by: (None) |
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