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| Mirrors > Home > ILE Home > Th. List > sqrt2irrap | Unicode version | ||
| Description: The square root of 2 is
irrational. That is, for any rational number,
|
| Ref | Expression |
|---|---|
| sqrt2irrap |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elq 9834 |
. . 3
| |
| 2 | 1 | biimpi 120 |
. 2
|
| 3 | simplrl 535 |
. . . . . . . . 9
| |
| 4 | 3 | adantr 276 |
. . . . . . . 8
|
| 5 | simplrr 536 |
. . . . . . . . 9
| |
| 6 | 5 | adantr 276 |
. . . . . . . 8
|
| 7 | znq 9836 |
. . . . . . . . 9
| |
| 8 | qre 9837 |
. . . . . . . . 9
| |
| 9 | 7, 8 | syl 14 |
. . . . . . . 8
|
| 10 | 4, 6, 9 | syl2anc 411 |
. . . . . . 7
|
| 11 | sqrt2re 12706 |
. . . . . . . 8
| |
| 12 | 11 | a1i 9 |
. . . . . . 7
|
| 13 | 0red 8163 |
. . . . . . . 8
| |
| 14 | 4 | zcnd 9586 |
. . . . . . . . . 10
|
| 15 | 6 | nncnd 9140 |
. . . . . . . . . 10
|
| 16 | 6 | nnap0d 9172 |
. . . . . . . . . 10
|
| 17 | 14, 15, 16 | divrecapd 8956 |
. . . . . . . . 9
|
| 18 | 4 | zred 9585 |
. . . . . . . . . 10
|
| 19 | 6 | nnrecred 9173 |
. . . . . . . . . 10
|
| 20 | simpr 110 |
. . . . . . . . . 10
| |
| 21 | 1red 8177 |
. . . . . . . . . . 11
| |
| 22 | 6 | nnrpd 9907 |
. . . . . . . . . . 11
|
| 23 | 0le1 8644 |
. . . . . . . . . . . 12
| |
| 24 | 23 | a1i 9 |
. . . . . . . . . . 11
|
| 25 | 21, 22, 24 | divge0d 9950 |
. . . . . . . . . 10
|
| 26 | mulle0r 9107 |
. . . . . . . . . 10
| |
| 27 | 18, 19, 20, 25, 26 | syl22anc 1272 |
. . . . . . . . 9
|
| 28 | 17, 27 | eqbrtrd 4105 |
. . . . . . . 8
|
| 29 | 2re 9196 |
. . . . . . . . . 10
| |
| 30 | 2pos 9217 |
. . . . . . . . . 10
| |
| 31 | 29, 30 | sqrtgt0ii 11663 |
. . . . . . . . 9
|
| 32 | 31 | a1i 9 |
. . . . . . . 8
|
| 33 | 10, 13, 12, 28, 32 | lelttrd 8287 |
. . . . . . 7
|
| 34 | 10, 12, 33 | gtapd 8800 |
. . . . . 6
|
| 35 | 3 | adantr 276 |
. . . . . . . 8
|
| 36 | simpr 110 |
. . . . . . . 8
| |
| 37 | elnnz 9472 |
. . . . . . . 8
| |
| 38 | 35, 36, 37 | sylanbrc 417 |
. . . . . . 7
|
| 39 | 5 | adantr 276 |
. . . . . . 7
|
| 40 | sqrt2irraplemnn 12722 |
. . . . . . 7
| |
| 41 | 38, 39, 40 | syl2anc 411 |
. . . . . 6
|
| 42 | 0z 9473 |
. . . . . . . . 9
| |
| 43 | zlelttric 9507 |
. . . . . . . . 9
| |
| 44 | 42, 43 | mpan2 425 |
. . . . . . . 8
|
| 45 | 44 | ad2antrl 490 |
. . . . . . 7
|
| 46 | 45 | adantr 276 |
. . . . . 6
|
| 47 | 34, 41, 46 | mpjaodan 803 |
. . . . 5
|
| 48 | simpr 110 |
. . . . 5
| |
| 49 | 47, 48 | breqtrrd 4111 |
. . . 4
|
| 50 | 49 | ex 115 |
. . 3
|
| 51 | 50 | rexlimdvva 2656 |
. 2
|
| 52 | 2, 51 | mpd 13 |
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 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-coll 4199 ax-sep 4202 ax-nul 4210 ax-pow 4259 ax-pr 4294 ax-un 4525 ax-setind 4630 ax-iinf 4681 ax-cnex 8106 ax-resscn 8107 ax-1cn 8108 ax-1re 8109 ax-icn 8110 ax-addcl 8111 ax-addrcl 8112 ax-mulcl 8113 ax-mulrcl 8114 ax-addcom 8115 ax-mulcom 8116 ax-addass 8117 ax-mulass 8118 ax-distr 8119 ax-i2m1 8120 ax-0lt1 8121 ax-1rid 8122 ax-0id 8123 ax-rnegex 8124 ax-precex 8125 ax-cnre 8126 ax-pre-ltirr 8127 ax-pre-ltwlin 8128 ax-pre-lttrn 8129 ax-pre-apti 8130 ax-pre-ltadd 8131 ax-pre-mulgt0 8132 ax-pre-mulext 8133 ax-arch 8134 ax-caucvg 8135 |
| This theorem depends on definitions: df-bi 117 df-stab 836 df-dc 840 df-3or 1003 df-3an 1004 df-tru 1398 df-fal 1401 df-xor 1418 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ne 2401 df-nel 2496 df-ral 2513 df-rex 2514 df-reu 2515 df-rmo 2516 df-rab 2517 df-v 2801 df-sbc 3029 df-csb 3125 df-dif 3199 df-un 3201 df-in 3203 df-ss 3210 df-nul 3492 df-if 3603 df-pw 3651 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3889 df-int 3924 df-iun 3967 df-br 4084 df-opab 4146 df-mpt 4147 df-tr 4183 df-id 4385 df-po 4388 df-iso 4389 df-iord 4458 df-on 4460 df-ilim 4461 df-suc 4463 df-iom 4684 df-xp 4726 df-rel 4727 df-cnv 4728 df-co 4729 df-dm 4730 df-rn 4731 df-res 4732 df-ima 4733 df-iota 5281 df-fun 5323 df-fn 5324 df-f 5325 df-f1 5326 df-fo 5327 df-f1o 5328 df-fv 5329 df-riota 5963 df-ov 6013 df-oprab 6014 df-mpo 6015 df-1st 6295 df-2nd 6296 df-recs 6462 df-frec 6548 df-1o 6573 df-2o 6574 df-er 6693 df-en 6901 df-sup 7167 df-pnf 8199 df-mnf 8200 df-xr 8201 df-ltxr 8202 df-le 8203 df-sub 8335 df-neg 8336 df-reap 8738 df-ap 8745 df-div 8836 df-inn 9127 df-2 9185 df-3 9186 df-4 9187 df-n0 9386 df-z 9463 df-uz 9739 df-q 9832 df-rp 9867 df-fz 10222 df-fzo 10356 df-fl 10507 df-mod 10562 df-seqfrec 10687 df-exp 10778 df-cj 11374 df-re 11375 df-im 11376 df-rsqrt 11530 df-abs 11531 df-dvds 12320 df-gcd 12496 df-prm 12651 |
| This theorem is referenced by: 2irrexpqap 15673 |
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