| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > qsqeqor | Unicode version | ||
| Description: The squares of two rational numbers are equal iff one number equals the other or its negative. (Contributed by Jim Kingdon, 1-Nov-2024.) |
| Ref | Expression |
|---|---|
| qsqeqor |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | qre 9920 |
. . . . . . 7
| |
| 2 | 1 | ad3antrrr 492 |
. . . . . 6
|
| 3 | simplr 529 |
. . . . . 6
| |
| 4 | qre 9920 |
. . . . . . 7
| |
| 5 | 4 | ad3antlr 493 |
. . . . . 6
|
| 6 | simpr 110 |
. . . . . 6
| |
| 7 | sq11 10937 |
. . . . . 6
| |
| 8 | 2, 3, 5, 6, 7 | syl22anc 1275 |
. . . . 5
|
| 9 | orc 720 |
. . . . 5
| |
| 10 | 8, 9 | biimtrdi 163 |
. . . 4
|
| 11 | oveq1 6035 |
. . . . . . 7
| |
| 12 | 11 | a1i 9 |
. . . . . 6
|
| 13 | oveq1 6035 |
. . . . . . . . 9
| |
| 14 | 13 | adantl 277 |
. . . . . . . 8
|
| 15 | qcn 9929 |
. . . . . . . . . 10
| |
| 16 | sqneg 10923 |
. . . . . . . . . 10
| |
| 17 | 15, 16 | syl 14 |
. . . . . . . . 9
|
| 18 | 17 | ad2antlr 489 |
. . . . . . . 8
|
| 19 | 14, 18 | eqtrd 2264 |
. . . . . . 7
|
| 20 | 19 | ex 115 |
. . . . . 6
|
| 21 | 12, 20 | jaod 725 |
. . . . 5
|
| 22 | 21 | ad2antrr 488 |
. . . 4
|
| 23 | 10, 22 | impbid 129 |
. . 3
|
| 24 | 17 | eqeq2d 2243 |
. . . . . 6
|
| 25 | 24 | ad3antlr 493 |
. . . . 5
|
| 26 | 1 | ad3antrrr 492 |
. . . . . . 7
|
| 27 | simplr 529 |
. . . . . . 7
| |
| 28 | qnegcl 9931 |
. . . . . . . . 9
| |
| 29 | qre 9920 |
. . . . . . . . 9
| |
| 30 | 28, 29 | syl 14 |
. . . . . . . 8
|
| 31 | 30 | ad3antlr 493 |
. . . . . . 7
|
| 32 | simpr 110 |
. . . . . . . 8
| |
| 33 | 4 | le0neg1d 8756 |
. . . . . . . . 9
|
| 34 | 33 | ad3antlr 493 |
. . . . . . . 8
|
| 35 | 32, 34 | mpbid 147 |
. . . . . . 7
|
| 36 | sq11 10937 |
. . . . . . 7
| |
| 37 | 26, 27, 31, 35, 36 | syl22anc 1275 |
. . . . . 6
|
| 38 | olc 719 |
. . . . . 6
| |
| 39 | 37, 38 | biimtrdi 163 |
. . . . 5
|
| 40 | 25, 39 | sylbird 170 |
. . . 4
|
| 41 | 21 | ad2antrr 488 |
. . . 4
|
| 42 | 40, 41 | impbid 129 |
. . 3
|
| 43 | 0z 9551 |
. . . . . 6
| |
| 44 | zq 9921 |
. . . . . 6
| |
| 45 | 43, 44 | ax-mp 5 |
. . . . 5
|
| 46 | qletric 10564 |
. . . . 5
| |
| 47 | 45, 46 | mpan 424 |
. . . 4
|
| 48 | 47 | ad2antlr 489 |
. . 3
|
| 49 | 23, 42, 48 | mpjaodan 806 |
. 2
|
| 50 | qnegcl 9931 |
. . . . . . . . . 10
| |
| 51 | qre 9920 |
. . . . . . . . . 10
| |
| 52 | 50, 51 | syl 14 |
. . . . . . . . 9
|
| 53 | 52 | ad3antrrr 492 |
. . . . . . . 8
|
| 54 | simplr 529 |
. . . . . . . . 9
| |
| 55 | 1 | le0neg1d 8756 |
. . . . . . . . . 10
|
| 56 | 55 | ad3antrrr 492 |
. . . . . . . . 9
|
| 57 | 54, 56 | mpbid 147 |
. . . . . . . 8
|
| 58 | 4 | ad3antlr 493 |
. . . . . . . 8
|
| 59 | simpr 110 |
. . . . . . . 8
| |
| 60 | sq11 10937 |
. . . . . . . 8
| |
| 61 | 53, 57, 58, 59, 60 | syl22anc 1275 |
. . . . . . 7
|
| 62 | 61 | biimpd 144 |
. . . . . 6
|
| 63 | qcn 9929 |
. . . . . . . . . 10
| |
| 64 | sqneg 10923 |
. . . . . . . . . 10
| |
| 65 | 63, 64 | syl 14 |
. . . . . . . . 9
|
| 66 | 65 | adantr 276 |
. . . . . . . 8
|
| 67 | 66 | eqeq1d 2240 |
. . . . . . 7
|
| 68 | 67 | ad2antrr 488 |
. . . . . 6
|
| 69 | negcon1 8490 |
. . . . . . . . 9
| |
| 70 | 63, 15, 69 | syl2an 289 |
. . . . . . . 8
|
| 71 | eqcom 2233 |
. . . . . . . 8
| |
| 72 | 70, 71 | bitrdi 196 |
. . . . . . 7
|
| 73 | 72 | ad2antrr 488 |
. . . . . 6
|
| 74 | 62, 68, 73 | 3imtr3d 202 |
. . . . 5
|
| 75 | 74, 38 | syl6 33 |
. . . 4
|
| 76 | 21 | ad2antrr 488 |
. . . 4
|
| 77 | 75, 76 | impbid 129 |
. . 3
|
| 78 | 52 | ad3antrrr 492 |
. . . . . . 7
|
| 79 | simplr 529 |
. . . . . . . 8
| |
| 80 | 55 | ad3antrrr 492 |
. . . . . . . 8
|
| 81 | 79, 80 | mpbid 147 |
. . . . . . 7
|
| 82 | 30 | ad3antlr 493 |
. . . . . . 7
|
| 83 | simpr 110 |
. . . . . . . 8
| |
| 84 | 33 | ad3antlr 493 |
. . . . . . . 8
|
| 85 | 83, 84 | mpbid 147 |
. . . . . . 7
|
| 86 | sq11 10937 |
. . . . . . 7
| |
| 87 | 78, 81, 82, 85, 86 | syl22anc 1275 |
. . . . . 6
|
| 88 | 65, 17 | eqeqan12d 2247 |
. . . . . . 7
|
| 89 | 88 | ad2antrr 488 |
. . . . . 6
|
| 90 | 63 | ad3antrrr 492 |
. . . . . . 7
|
| 91 | 15 | ad3antlr 493 |
. . . . . . 7
|
| 92 | 90, 91 | neg11ad 8545 |
. . . . . 6
|
| 93 | 87, 89, 92 | 3bitr3d 218 |
. . . . 5
|
| 94 | 93, 9 | biimtrdi 163 |
. . . 4
|
| 95 | 21 | ad2antrr 488 |
. . . 4
|
| 96 | 94, 95 | impbid 129 |
. . 3
|
| 97 | 47 | ad2antlr 489 |
. . 3
|
| 98 | 77, 96, 97 | mpjaodan 806 |
. 2
|
| 99 | qletric 10564 |
. . . 4
| |
| 100 | 45, 99 | mpan 424 |
. . 3
|
| 101 | 100 | adantr 276 |
. 2
|
| 102 | 49, 98, 101 | mpjaodan 806 |
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 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2204 ax-14 2205 ax-ext 2213 ax-coll 4209 ax-sep 4212 ax-nul 4220 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-setind 4641 ax-iinf 4692 ax-cnex 8183 ax-resscn 8184 ax-1cn 8185 ax-1re 8186 ax-icn 8187 ax-addcl 8188 ax-addrcl 8189 ax-mulcl 8190 ax-mulrcl 8191 ax-addcom 8192 ax-mulcom 8193 ax-addass 8194 ax-mulass 8195 ax-distr 8196 ax-i2m1 8197 ax-0lt1 8198 ax-1rid 8199 ax-0id 8200 ax-rnegex 8201 ax-precex 8202 ax-cnre 8203 ax-pre-ltirr 8204 ax-pre-ltwlin 8205 ax-pre-lttrn 8206 ax-pre-apti 8207 ax-pre-ltadd 8208 ax-pre-mulgt0 8209 ax-pre-mulext 8210 |
| This theorem depends on definitions: df-bi 117 df-dc 843 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ne 2404 df-nel 2499 df-ral 2516 df-rex 2517 df-reu 2518 df-rmo 2519 df-rab 2520 df-v 2805 df-sbc 3033 df-csb 3129 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-nul 3497 df-if 3608 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-int 3934 df-iun 3977 df-br 4094 df-opab 4156 df-mpt 4157 df-tr 4193 df-id 4396 df-po 4399 df-iso 4400 df-iord 4469 df-on 4471 df-ilim 4472 df-suc 4474 df-iom 4695 df-xp 4737 df-rel 4738 df-cnv 4739 df-co 4740 df-dm 4741 df-rn 4742 df-res 4743 df-ima 4744 df-iota 5293 df-fun 5335 df-fn 5336 df-f 5337 df-f1 5338 df-fo 5339 df-f1o 5340 df-fv 5341 df-riota 5981 df-ov 6031 df-oprab 6032 df-mpo 6033 df-1st 6312 df-2nd 6313 df-recs 6514 df-frec 6600 df-pnf 8275 df-mnf 8276 df-xr 8277 df-ltxr 8278 df-le 8279 df-sub 8411 df-neg 8412 df-reap 8814 df-ap 8821 df-div 8912 df-inn 9203 df-2 9261 df-n0 9462 df-z 9541 df-uz 9817 df-q 9915 df-rp 9950 df-seqfrec 10773 df-exp 10864 |
| This theorem is referenced by: 4sqlem10 13040 |
| Copyright terms: Public domain | W3C validator |