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Mirrors > Home > ILE Home > Th. List > facp1 | Unicode version |
Description: The factorial of a successor. (Contributed by NM, 2-Dec-2004.) (Revised by Mario Carneiro, 13-Jul-2013.) |
Ref | Expression |
---|---|
facp1 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elnn0 9003 |
. 2
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2 | elnnuz 9386 |
. . . . . . 7
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3 | 2 | biimpi 119 |
. . . . . 6
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4 | fvi 5486 |
. . . . . . . 8
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5 | eluzelcn 9361 |
. . . . . . . 8
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6 | 4, 5 | eqeltrd 2217 |
. . . . . . 7
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7 | 6 | adantl 275 |
. . . . . 6
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8 | mulcl 7771 |
. . . . . . 7
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9 | 8 | adantl 275 |
. . . . . 6
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10 | 3, 7, 9 | seq3p1 10266 |
. . . . 5
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11 | peano2nn 8756 |
. . . . . . 7
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12 | fvi 5486 |
. . . . . . 7
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13 | 11, 12 | syl 14 |
. . . . . 6
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14 | 13 | oveq2d 5798 |
. . . . 5
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15 | 10, 14 | eqtrd 2173 |
. . . 4
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16 | facnn 10505 |
. . . . 5
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17 | 11, 16 | syl 14 |
. . . 4
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18 | facnn 10505 |
. . . . 5
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19 | 18 | oveq1d 5797 |
. . . 4
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20 | 15, 17, 19 | 3eqtr4d 2183 |
. . 3
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21 | 0p1e1 8858 |
. . . . . 6
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22 | 21 | fveq2i 5432 |
. . . . 5
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23 | fac1 10507 |
. . . . 5
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24 | 22, 23 | eqtri 2161 |
. . . 4
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25 | fvoveq1 5805 |
. . . 4
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26 | fveq2 5429 |
. . . . . 6
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27 | oveq1 5789 |
. . . . . 6
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28 | 26, 27 | oveq12d 5800 |
. . . . 5
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29 | fac0 10506 |
. . . . . . 7
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30 | 29, 21 | oveq12i 5794 |
. . . . . 6
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31 | 1t1e1 8896 |
. . . . . 6
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32 | 30, 31 | eqtri 2161 |
. . . . 5
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33 | 28, 32 | eqtrdi 2189 |
. . . 4
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34 | 24, 25, 33 | 3eqtr4a 2199 |
. . 3
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35 | 20, 34 | jaoi 706 |
. 2
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36 | 1, 35 | sylbi 120 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1483 ax-10 1484 ax-11 1485 ax-i12 1486 ax-bndl 1487 ax-4 1488 ax-13 1492 ax-14 1493 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 ax-coll 4051 ax-sep 4054 ax-nul 4062 ax-pow 4106 ax-pr 4139 ax-un 4363 ax-setind 4460 ax-iinf 4510 ax-cnex 7735 ax-resscn 7736 ax-1cn 7737 ax-1re 7738 ax-icn 7739 ax-addcl 7740 ax-addrcl 7741 ax-mulcl 7742 ax-addcom 7744 ax-mulcom 7745 ax-addass 7746 ax-mulass 7747 ax-distr 7748 ax-i2m1 7749 ax-0lt1 7750 ax-1rid 7751 ax-0id 7752 ax-rnegex 7753 ax-cnre 7755 ax-pre-ltirr 7756 ax-pre-ltwlin 7757 ax-pre-lttrn 7758 ax-pre-ltadd 7760 |
This theorem depends on definitions: df-bi 116 df-3or 964 df-3an 965 df-tru 1335 df-fal 1338 df-nf 1438 df-sb 1737 df-eu 2003 df-mo 2004 df-clab 2127 df-cleq 2133 df-clel 2136 df-nfc 2271 df-ne 2310 df-nel 2405 df-ral 2422 df-rex 2423 df-reu 2424 df-rab 2426 df-v 2691 df-sbc 2914 df-csb 3008 df-dif 3078 df-un 3080 df-in 3082 df-ss 3089 df-nul 3369 df-pw 3517 df-sn 3538 df-pr 3539 df-op 3541 df-uni 3745 df-int 3780 df-iun 3823 df-br 3938 df-opab 3998 df-mpt 3999 df-tr 4035 df-id 4223 df-iord 4296 df-on 4298 df-ilim 4299 df-suc 4301 df-iom 4513 df-xp 4553 df-rel 4554 df-cnv 4555 df-co 4556 df-dm 4557 df-rn 4558 df-res 4559 df-ima 4560 df-iota 5096 df-fun 5133 df-fn 5134 df-f 5135 df-f1 5136 df-fo 5137 df-f1o 5138 df-fv 5139 df-riota 5738 df-ov 5785 df-oprab 5786 df-mpo 5787 df-1st 6046 df-2nd 6047 df-recs 6210 df-frec 6296 df-pnf 7826 df-mnf 7827 df-xr 7828 df-ltxr 7829 df-le 7830 df-sub 7959 df-neg 7960 df-inn 8745 df-n0 9002 df-z 9079 df-uz 9351 df-seqfrec 10250 df-fac 10504 |
This theorem is referenced by: fac2 10509 fac3 10510 fac4 10511 facnn2 10512 faccl 10513 facdiv 10516 facwordi 10518 faclbnd 10519 faclbnd6 10522 facubnd 10523 bcm1k 10538 bcp1n 10539 4bc2eq6 10552 efcllemp 11401 ef01bndlem 11499 eirraplem 11519 dvdsfac 11594 prmfac1 11866 ex-fac 13111 |
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