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Mirrors > Home > ILE Home > Th. List > nnmulcl | Unicode version |
Description: Closure of multiplication of positive integers. (Contributed by NM, 12-Jan-1997.) |
Ref | Expression |
---|---|
nnmulcl |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | oveq2 5844 | . . . . 5 | |
2 | 1 | eleq1d 2233 | . . . 4 |
3 | 2 | imbi2d 229 | . . 3 |
4 | oveq2 5844 | . . . . 5 | |
5 | 4 | eleq1d 2233 | . . . 4 |
6 | 5 | imbi2d 229 | . . 3 |
7 | oveq2 5844 | . . . . 5 | |
8 | 7 | eleq1d 2233 | . . . 4 |
9 | 8 | imbi2d 229 | . . 3 |
10 | oveq2 5844 | . . . . 5 | |
11 | 10 | eleq1d 2233 | . . . 4 |
12 | 11 | imbi2d 229 | . . 3 |
13 | nncn 8856 | . . . 4 | |
14 | mulid1 7887 | . . . . . 6 | |
15 | 14 | eleq1d 2233 | . . . . 5 |
16 | 15 | biimprd 157 | . . . 4 |
17 | 13, 16 | mpcom 36 | . . 3 |
18 | nnaddcl 8868 | . . . . . . . 8 | |
19 | 18 | ancoms 266 | . . . . . . 7 |
20 | nncn 8856 | . . . . . . . . 9 | |
21 | ax-1cn 7837 | . . . . . . . . . . 11 | |
22 | adddi 7876 | . . . . . . . . . . 11 | |
23 | 21, 22 | mp3an3 1315 | . . . . . . . . . 10 |
24 | 14 | oveq2d 5852 | . . . . . . . . . . 11 |
25 | 24 | adantr 274 | . . . . . . . . . 10 |
26 | 23, 25 | eqtrd 2197 | . . . . . . . . 9 |
27 | 13, 20, 26 | syl2an 287 | . . . . . . . 8 |
28 | 27 | eleq1d 2233 | . . . . . . 7 |
29 | 19, 28 | syl5ibr 155 | . . . . . 6 |
30 | 29 | exp4b 365 | . . . . 5 |
31 | 30 | pm2.43b 52 | . . . 4 |
32 | 31 | a2d 26 | . . 3 |
33 | 3, 6, 9, 12, 17, 32 | nnind 8864 | . 2 |
34 | 33 | impcom 124 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wceq 1342 wcel 2135 (class class class)co 5836 cc 7742 c1 7745 caddc 7747 cmul 7749 cn 8848 |
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-io 699 ax-5 1434 ax-7 1435 ax-gen 1436 ax-ie1 1480 ax-ie2 1481 ax-8 1491 ax-10 1492 ax-11 1493 ax-i12 1494 ax-bndl 1496 ax-4 1497 ax-17 1513 ax-i9 1517 ax-ial 1521 ax-i5r 1522 ax-ext 2146 ax-sep 4094 ax-cnex 7835 ax-resscn 7836 ax-1cn 7837 ax-1re 7838 ax-icn 7839 ax-addcl 7840 ax-addrcl 7841 ax-mulcl 7842 ax-mulcom 7845 ax-addass 7846 ax-mulass 7847 ax-distr 7848 ax-1rid 7851 ax-cnre 7855 |
This theorem depends on definitions: df-bi 116 df-3an 969 df-tru 1345 df-nf 1448 df-sb 1750 df-clab 2151 df-cleq 2157 df-clel 2160 df-nfc 2295 df-ral 2447 df-rex 2448 df-rab 2451 df-v 2723 df-un 3115 df-in 3117 df-ss 3124 df-sn 3576 df-pr 3577 df-op 3579 df-uni 3784 df-int 3819 df-br 3977 df-iota 5147 df-fv 5190 df-ov 5839 df-inn 8849 |
This theorem is referenced by: nnmulcli 8870 nndivtr 8890 nnmulcld 8897 nn0mulcl 9141 qaddcl 9564 qmulcl 9566 modqmulnn 10267 nnexpcl 10458 nnsqcl 10514 faccl 10637 facdiv 10640 faclbnd3 10645 bcrpcl 10655 trirecip 11428 fprodnncl 11537 lcmgcdlem 11988 lcmgcdnn 11993 pcmptcl 12249 pcmpt 12250 |
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