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Mirrors > Home > MPE Home > Th. List > facavg | Structured version Visualization version Unicode version |
Description: The product of two factorials is greater than or equal to the factorial of (the floor of) their average. (Contributed by NM, 9-Dec-2005.) |
Ref | Expression |
---|---|
facavg |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nn0readdcl 11357 | . . . . . 6 | |
2 | 1 | rehalfcld 11279 | . . . . 5 |
3 | flle 12600 | . . . . 5 | |
4 | 2, 3 | syl 17 | . . . 4 |
5 | reflcl 12597 | . . . . . 6 | |
6 | 2, 5 | syl 17 | . . . . 5 |
7 | nn0re 11301 | . . . . . 6 | |
8 | 7 | adantr 481 | . . . . 5 |
9 | letr 10131 | . . . . 5 | |
10 | 6, 2, 8, 9 | syl3anc 1326 | . . . 4 |
11 | 4, 10 | mpand 711 | . . 3 |
12 | nn0addcl 11328 | . . . . . . 7 | |
13 | 12 | nn0ge0d 11354 | . . . . . 6 |
14 | halfnneg2 11263 | . . . . . . 7 | |
15 | 1, 14 | syl 17 | . . . . . 6 |
16 | 13, 15 | mpbid 222 | . . . . 5 |
17 | flge0nn0 12621 | . . . . 5 | |
18 | 2, 16, 17 | syl2anc 693 | . . . 4 |
19 | simpl 473 | . . . 4 | |
20 | facwordi 13076 | . . . . 5 | |
21 | 20 | 3exp 1264 | . . . 4 |
22 | 18, 19, 21 | sylc 65 | . . 3 |
23 | faccl 13070 | . . . . . . . 8 | |
24 | 23 | nncnd 11036 | . . . . . . 7 |
25 | 24 | mulid1d 10057 | . . . . . 6 |
26 | 25 | adantr 481 | . . . . 5 |
27 | faccl 13070 | . . . . . . . 8 | |
28 | 27 | nnred 11035 | . . . . . . 7 |
29 | 28 | adantl 482 | . . . . . 6 |
30 | 23 | nnred 11035 | . . . . . . . 8 |
31 | 23 | nnnn0d 11351 | . . . . . . . . 9 |
32 | 31 | nn0ge0d 11354 | . . . . . . . 8 |
33 | 30, 32 | jca 554 | . . . . . . 7 |
34 | 33 | adantr 481 | . . . . . 6 |
35 | 27 | nnge1d 11063 | . . . . . . 7 |
36 | 35 | adantl 482 | . . . . . 6 |
37 | 1re 10039 | . . . . . . 7 | |
38 | lemul2a 10878 | . . . . . . 7 | |
39 | 37, 38 | mp3anl1 1418 | . . . . . 6 |
40 | 29, 34, 36, 39 | syl21anc 1325 | . . . . 5 |
41 | 26, 40 | eqbrtrrd 4677 | . . . 4 |
42 | faccl 13070 | . . . . . . 7 | |
43 | 18, 42 | syl 17 | . . . . . 6 |
44 | 43 | nnred 11035 | . . . . 5 |
45 | 30 | adantr 481 | . . . . 5 |
46 | remulcl 10021 | . . . . . 6 | |
47 | 30, 28, 46 | syl2an 494 | . . . . 5 |
48 | letr 10131 | . . . . 5 | |
49 | 44, 45, 47, 48 | syl3anc 1326 | . . . 4 |
50 | 41, 49 | mpan2d 710 | . . 3 |
51 | 11, 22, 50 | 3syld 60 | . 2 |
52 | nn0re 11301 | . . . . . 6 | |
53 | 52 | adantl 482 | . . . . 5 |
54 | letr 10131 | . . . . 5 | |
55 | 6, 2, 53, 54 | syl3anc 1326 | . . . 4 |
56 | 4, 55 | mpand 711 | . . 3 |
57 | simpr 477 | . . . 4 | |
58 | facwordi 13076 | . . . . 5 | |
59 | 58 | 3exp 1264 | . . . 4 |
60 | 18, 57, 59 | sylc 65 | . . 3 |
61 | 27 | nncnd 11036 | . . . . . . 7 |
62 | 61 | mulid2d 10058 | . . . . . 6 |
63 | 62 | adantl 482 | . . . . 5 |
64 | 27 | nnnn0d 11351 | . . . . . . . . 9 |
65 | 64 | nn0ge0d 11354 | . . . . . . . 8 |
66 | 28, 65 | jca 554 | . . . . . . 7 |
67 | 66 | adantl 482 | . . . . . 6 |
68 | 23 | nnge1d 11063 | . . . . . . 7 |
69 | 68 | adantr 481 | . . . . . 6 |
70 | lemul1a 10877 | . . . . . . 7 | |
71 | 37, 70 | mp3anl1 1418 | . . . . . 6 |
72 | 45, 67, 69, 71 | syl21anc 1325 | . . . . 5 |
73 | 63, 72 | eqbrtrrd 4677 | . . . 4 |
74 | letr 10131 | . . . . 5 | |
75 | 44, 29, 47, 74 | syl3anc 1326 | . . . 4 |
76 | 73, 75 | mpan2d 710 | . . 3 |
77 | 56, 60, 76 | 3syld 60 | . 2 |
78 | avgle 11274 | . . 3 | |
79 | 7, 52, 78 | syl2an 494 | . 2 |
80 | 51, 77, 79 | mpjaod 396 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 196 wo 383 wa 384 wceq 1483 wcel 1990 class class class wbr 4653 cfv 5888 (class class class)co 6650 cr 9935 cc0 9936 c1 9937 caddc 9939 cmul 9941 cle 10075 cdiv 10684 cn 11020 c2 11070 cn0 11292 cfl 12591 cfa 13060 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 ax-un 6949 ax-cnex 9992 ax-resscn 9993 ax-1cn 9994 ax-icn 9995 ax-addcl 9996 ax-addrcl 9997 ax-mulcl 9998 ax-mulrcl 9999 ax-mulcom 10000 ax-addass 10001 ax-mulass 10002 ax-distr 10003 ax-i2m1 10004 ax-1ne0 10005 ax-1rid 10006 ax-rnegex 10007 ax-rrecex 10008 ax-cnre 10009 ax-pre-lttri 10010 ax-pre-lttrn 10011 ax-pre-ltadd 10012 ax-pre-mulgt0 10013 ax-pre-sup 10014 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3or 1038 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-nel 2898 df-ral 2917 df-rex 2918 df-reu 2919 df-rmo 2920 df-rab 2921 df-v 3202 df-sbc 3436 df-csb 3534 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-pss 3590 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-tp 4182 df-op 4184 df-uni 4437 df-iun 4522 df-br 4654 df-opab 4713 df-mpt 4730 df-tr 4753 df-id 5024 df-eprel 5029 df-po 5035 df-so 5036 df-fr 5073 df-we 5075 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-pred 5680 df-ord 5726 df-on 5727 df-lim 5728 df-suc 5729 df-iota 5851 df-fun 5890 df-fn 5891 df-f 5892 df-f1 5893 df-fo 5894 df-f1o 5895 df-fv 5896 df-riota 6611 df-ov 6653 df-oprab 6654 df-mpt2 6655 df-om 7066 df-2nd 7169 df-wrecs 7407 df-recs 7468 df-rdg 7506 df-er 7742 df-en 7956 df-dom 7957 df-sdom 7958 df-sup 8348 df-inf 8349 df-pnf 10076 df-mnf 10077 df-xr 10078 df-ltxr 10079 df-le 10080 df-sub 10268 df-neg 10269 df-div 10685 df-nn 11021 df-2 11079 df-n0 11293 df-z 11378 df-uz 11688 df-fl 12593 df-seq 12802 df-fac 13061 |
This theorem is referenced by: (None) |
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