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Mirrors > Home > ILE Home > Th. List > permnn | Unicode version |
Description: The number of permutations of objects from a collection of objects is a positive integer. (Contributed by Jason Orendorff, 24-Jan-2007.) |
Ref | Expression |
---|---|
permnn |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elfznn0 10022 | . . 3 | |
2 | 1 | faccld 10621 | . 2 |
3 | fznn0sub 9965 | . . . 4 | |
4 | 3 | faccld 10621 | . . 3 |
5 | 4, 2 | nnmulcld 8887 | . 2 |
6 | elfz3nn0 10023 | . . 3 | |
7 | faccl 10620 | . . . 4 | |
8 | 7 | nncnd 8852 | . . 3 |
9 | 6, 8 | syl 14 | . 2 |
10 | 4 | nncnd 8852 | . . . 4 |
11 | 2 | nncnd 8852 | . . . 4 |
12 | 2 | nnap0d 8884 | . . . 4 # |
13 | 10, 11, 12 | divcanap4d 8673 | . . 3 |
14 | 13, 4 | eqeltrd 2234 | . 2 |
15 | bcval2 10635 | . . 3 | |
16 | bccl2 10653 | . . 3 | |
17 | 15, 16 | eqeltrrd 2235 | . 2 |
18 | nndivtr 8880 | . 2 | |
19 | 2, 5, 9, 14, 17, 18 | syl32anc 1228 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wcel 2128 cfv 5172 (class class class)co 5826 cc 7732 cc0 7734 cmul 7739 cmin 8050 cdiv 8549 cn 8838 cn0 9095 cfz 9918 cfa 10610 cbc 10632 |
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 1427 ax-7 1428 ax-gen 1429 ax-ie1 1473 ax-ie2 1474 ax-8 1484 ax-10 1485 ax-11 1486 ax-i12 1487 ax-bndl 1489 ax-4 1490 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-13 2130 ax-14 2131 ax-ext 2139 ax-coll 4081 ax-sep 4084 ax-nul 4092 ax-pow 4137 ax-pr 4171 ax-un 4395 ax-setind 4498 ax-iinf 4549 ax-cnex 7825 ax-resscn 7826 ax-1cn 7827 ax-1re 7828 ax-icn 7829 ax-addcl 7830 ax-addrcl 7831 ax-mulcl 7832 ax-mulrcl 7833 ax-addcom 7834 ax-mulcom 7835 ax-addass 7836 ax-mulass 7837 ax-distr 7838 ax-i2m1 7839 ax-0lt1 7840 ax-1rid 7841 ax-0id 7842 ax-rnegex 7843 ax-precex 7844 ax-cnre 7845 ax-pre-ltirr 7846 ax-pre-ltwlin 7847 ax-pre-lttrn 7848 ax-pre-apti 7849 ax-pre-ltadd 7850 ax-pre-mulgt0 7851 ax-pre-mulext 7852 |
This theorem depends on definitions: df-bi 116 df-dc 821 df-3or 964 df-3an 965 df-tru 1338 df-fal 1341 df-nf 1441 df-sb 1743 df-eu 2009 df-mo 2010 df-clab 2144 df-cleq 2150 df-clel 2153 df-nfc 2288 df-ne 2328 df-nel 2423 df-ral 2440 df-rex 2441 df-reu 2442 df-rmo 2443 df-rab 2444 df-v 2714 df-sbc 2938 df-csb 3032 df-dif 3104 df-un 3106 df-in 3108 df-ss 3115 df-nul 3396 df-if 3507 df-pw 3546 df-sn 3567 df-pr 3568 df-op 3570 df-uni 3775 df-int 3810 df-iun 3853 df-br 3968 df-opab 4028 df-mpt 4029 df-tr 4065 df-id 4255 df-po 4258 df-iso 4259 df-iord 4328 df-on 4330 df-ilim 4331 df-suc 4333 df-iom 4552 df-xp 4594 df-rel 4595 df-cnv 4596 df-co 4597 df-dm 4598 df-rn 4599 df-res 4600 df-ima 4601 df-iota 5137 df-fun 5174 df-fn 5175 df-f 5176 df-f1 5177 df-fo 5178 df-f1o 5179 df-fv 5180 df-riota 5782 df-ov 5829 df-oprab 5830 df-mpo 5831 df-1st 6090 df-2nd 6091 df-recs 6254 df-frec 6340 df-pnf 7916 df-mnf 7917 df-xr 7918 df-ltxr 7919 df-le 7920 df-sub 8052 df-neg 8053 df-reap 8454 df-ap 8461 df-div 8550 df-inn 8839 df-n0 9096 df-z 9173 df-uz 9445 df-q 9535 df-rp 9567 df-fz 9919 df-seqfrec 10354 df-fac 10611 df-bc 10633 |
This theorem is referenced by: eirraplem 11684 |
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