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| Mirrors > Home > ILE Home > Th. List > fimaxq | Unicode version | ||
| Description: A finite set of rational numbers has a maximum. (Contributed by Jim Kingdon, 6-Sep-2022.) |
| Ref | Expression |
|---|---|
| fimaxq |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | qssre 9788 |
. . . . 5
| |
| 2 | sstr 3210 |
. . . . . 6
| |
| 3 | ltso 8187 |
. . . . . . 7
| |
| 4 | sopo 4379 |
. . . . . . 7
| |
| 5 | 3, 4 | ax-mp 5 |
. . . . . 6
|
| 6 | poss 4364 |
. . . . . 6
| |
| 7 | 2, 5, 6 | mpisyl 1467 |
. . . . 5
|
| 8 | 1, 7 | mpan2 425 |
. . . 4
|
| 9 | 8 | 3ad2ant1 1021 |
. . 3
|
| 10 | simpl1 1003 |
. . . . . 6
| |
| 11 | simprl 529 |
. . . . . 6
| |
| 12 | 10, 11 | sseldd 3203 |
. . . . 5
|
| 13 | simprr 531 |
. . . . . 6
| |
| 14 | 10, 13 | sseldd 3203 |
. . . . 5
|
| 15 | qtri3or 10422 |
. . . . 5
| |
| 16 | 12, 14, 15 | syl2anc 411 |
. . . 4
|
| 17 | 16 | ralrimivva 2590 |
. . 3
|
| 18 | simp2 1001 |
. . 3
| |
| 19 | simp3 1002 |
. . 3
| |
| 20 | 9, 17, 18, 19 | fimax2gtri 7026 |
. 2
|
| 21 | simpll1 1039 |
. . . . . . 7
| |
| 22 | simpr 110 |
. . . . . . 7
| |
| 23 | 21, 22 | sseldd 3203 |
. . . . . 6
|
| 24 | qre 9783 |
. . . . . 6
| |
| 25 | 23, 24 | syl 14 |
. . . . 5
|
| 26 | simplr 528 |
. . . . . . 7
| |
| 27 | 21, 26 | sseldd 3203 |
. . . . . 6
|
| 28 | qre 9783 |
. . . . . 6
| |
| 29 | 27, 28 | syl 14 |
. . . . 5
|
| 30 | 25, 29 | lenltd 8227 |
. . . 4
|
| 31 | 30 | ralbidva 2504 |
. . 3
|
| 32 | 31 | rexbidva 2505 |
. 2
|
| 33 | 20, 32 | mpbird 167 |
1
|
| 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 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-13 2180 ax-14 2181 ax-ext 2189 ax-coll 4176 ax-sep 4179 ax-nul 4187 ax-pow 4235 ax-pr 4270 ax-un 4499 ax-setind 4604 ax-iinf 4655 ax-cnex 8053 ax-resscn 8054 ax-1cn 8055 ax-1re 8056 ax-icn 8057 ax-addcl 8058 ax-addrcl 8059 ax-mulcl 8060 ax-mulrcl 8061 ax-addcom 8062 ax-mulcom 8063 ax-addass 8064 ax-mulass 8065 ax-distr 8066 ax-i2m1 8067 ax-0lt1 8068 ax-1rid 8069 ax-0id 8070 ax-rnegex 8071 ax-precex 8072 ax-cnre 8073 ax-pre-ltirr 8074 ax-pre-ltwlin 8075 ax-pre-lttrn 8076 ax-pre-apti 8077 ax-pre-ltadd 8078 ax-pre-mulgt0 8079 ax-pre-mulext 8080 |
| This theorem depends on definitions: df-bi 117 df-dc 837 df-3or 982 df-3an 983 df-tru 1376 df-fal 1379 df-nf 1485 df-sb 1787 df-eu 2058 df-mo 2059 df-clab 2194 df-cleq 2200 df-clel 2203 df-nfc 2339 df-ne 2379 df-nel 2474 df-ral 2491 df-rex 2492 df-reu 2493 df-rmo 2494 df-rab 2495 df-v 2779 df-sbc 3007 df-csb 3103 df-dif 3177 df-un 3179 df-in 3181 df-ss 3188 df-nul 3470 df-if 3581 df-pw 3629 df-sn 3650 df-pr 3651 df-op 3653 df-uni 3866 df-int 3901 df-iun 3944 df-br 4061 df-opab 4123 df-mpt 4124 df-tr 4160 df-id 4359 df-po 4362 df-iso 4363 df-iord 4432 df-on 4434 df-suc 4437 df-iom 4658 df-xp 4700 df-rel 4701 df-cnv 4702 df-co 4703 df-dm 4704 df-rn 4705 df-res 4706 df-ima 4707 df-iota 5252 df-fun 5293 df-fn 5294 df-f 5295 df-f1 5296 df-fo 5297 df-f1o 5298 df-fv 5299 df-riota 5924 df-ov 5972 df-oprab 5973 df-mpo 5974 df-1st 6251 df-2nd 6252 df-er 6645 df-en 6853 df-fin 6855 df-pnf 8146 df-mnf 8147 df-xr 8148 df-ltxr 8149 df-le 8150 df-sub 8282 df-neg 8283 df-reap 8685 df-ap 8692 df-div 8783 df-inn 9074 df-n0 9333 df-z 9410 df-q 9778 df-rp 9813 |
| This theorem is referenced by: fiubm 11012 zfz1iso 11025 |
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