| Intuitionistic Logic Explorer | 
      
      
      < Previous  
      Next >
      
       Nearby theorems  | 
  ||
| Mirrors > Home > ILE Home > Th. List > sqrt2irraplemnn | Unicode version | ||
| Description: Lemma for sqrt2irrap 12348. The square root of 2 is apart from a positive rational expressed as a numerator and denominator. (Contributed by Jim Kingdon, 2-Oct-2021.) | 
| Ref | Expression | 
|---|---|
| sqrt2irraplemnn | 
 | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | simpl 109 | 
. . . . . . 7
 | |
| 2 | 1 | nnsqcld 10786 | 
. . . . . 6
 | 
| 3 | 2 | nnred 9003 | 
. . . . 5
 | 
| 4 | 0red 8027 | 
. . . . . 6
 | |
| 5 | 2 | nngt0d 9034 | 
. . . . . 6
 | 
| 6 | 4, 3, 5 | ltled 8145 | 
. . . . 5
 | 
| 7 | simpr 110 | 
. . . . . . 7
 | |
| 8 | 7 | nnsqcld 10786 | 
. . . . . 6
 | 
| 9 | 8 | nnrpd 9769 | 
. . . . 5
 | 
| 10 | 3, 6, 9 | sqrtdivd 11333 | 
. . . 4
 | 
| 11 | 1 | nnred 9003 | 
. . . . . 6
 | 
| 12 | 1 | nngt0d 9034 | 
. . . . . . 7
 | 
| 13 | 4, 11, 12 | ltled 8145 | 
. . . . . 6
 | 
| 14 | 11, 13 | sqrtsqd 11330 | 
. . . . 5
 | 
| 15 | 7 | nnred 9003 | 
. . . . . 6
 | 
| 16 | 7 | nngt0d 9034 | 
. . . . . . 7
 | 
| 17 | 4, 15, 16 | ltled 8145 | 
. . . . . 6
 | 
| 18 | 15, 17 | sqrtsqd 11330 | 
. . . . 5
 | 
| 19 | 14, 18 | oveq12d 5940 | 
. . . 4
 | 
| 20 | 10, 19 | eqtrd 2229 | 
. . 3
 | 
| 21 | sqne2sq 12345 | 
. . . . . 6
 | |
| 22 | 2 | nncnd 9004 | 
. . . . . . . 8
 | 
| 23 | 2cnd 9063 | 
. . . . . . . 8
 | |
| 24 | 8 | nncnd 9004 | 
. . . . . . . 8
 | 
| 25 | 8 | nnap0d 9036 | 
. . . . . . . 8
 | 
| 26 | 22, 23, 24, 25 | divmulap3d 8852 | 
. . . . . . 7
 | 
| 27 | 26 | necon3bid 2408 | 
. . . . . 6
 | 
| 28 | 21, 27 | mpbird 167 | 
. . . . 5
 | 
| 29 | 2 | nnzd 9447 | 
. . . . . . 7
 | 
| 30 | znq 9698 | 
. . . . . . 7
 | |
| 31 | 29, 8, 30 | syl2anc 411 | 
. . . . . 6
 | 
| 32 | 2z 9354 | 
. . . . . . 7
 | |
| 33 | zq 9700 | 
. . . . . . 7
 | |
| 34 | 32, 33 | mp1i 10 | 
. . . . . 6
 | 
| 35 | qapne 9713 | 
. . . . . 6
 | |
| 36 | 31, 34, 35 | syl2anc 411 | 
. . . . 5
 | 
| 37 | 28, 36 | mpbird 167 | 
. . . 4
 | 
| 38 | qre 9699 | 
. . . . . 6
 | |
| 39 | 31, 38 | syl 14 | 
. . . . 5
 | 
| 40 | 8 | nnred 9003 | 
. . . . . . 7
 | 
| 41 | 8 | nngt0d 9034 | 
. . . . . . 7
 | 
| 42 | 3, 40, 5, 41 | divgt0d 8962 | 
. . . . . 6
 | 
| 43 | 4, 39, 42 | ltled 8145 | 
. . . . 5
 | 
| 44 | 2re 9060 | 
. . . . . 6
 | |
| 45 | 44 | a1i 9 | 
. . . . 5
 | 
| 46 | 0le2 9080 | 
. . . . . 6
 | |
| 47 | 46 | a1i 9 | 
. . . . 5
 | 
| 48 | sqrt11ap 11203 | 
. . . . 5
 | |
| 49 | 39, 43, 45, 47, 48 | syl22anc 1250 | 
. . . 4
 | 
| 50 | 37, 49 | mpbird 167 | 
. . 3
 | 
| 51 | 20, 50 | eqbrtrrd 4057 | 
. 2
 | 
| 52 | nnz 9345 | 
. . . . 5
 | |
| 53 | znq 9698 | 
. . . . 5
 | |
| 54 | 52, 53 | sylan 283 | 
. . . 4
 | 
| 55 | qcn 9708 | 
. . . 4
 | |
| 56 | 54, 55 | syl 14 | 
. . 3
 | 
| 57 | sqrt2re 12331 | 
. . . . 5
 | |
| 58 | 57 | recni 8038 | 
. . . 4
 | 
| 59 | 58 | a1i 9 | 
. . 3
 | 
| 60 | apsym 8633 | 
. . 3
 | |
| 61 | 56, 59, 60 | syl2anc 411 | 
. 2
 | 
| 62 | 51, 61 | mpbid 147 | 
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 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-13 2169 ax-14 2170 ax-ext 2178 ax-coll 4148 ax-sep 4151 ax-nul 4159 ax-pow 4207 ax-pr 4242 ax-un 4468 ax-setind 4573 ax-iinf 4624 ax-cnex 7970 ax-resscn 7971 ax-1cn 7972 ax-1re 7973 ax-icn 7974 ax-addcl 7975 ax-addrcl 7976 ax-mulcl 7977 ax-mulrcl 7978 ax-addcom 7979 ax-mulcom 7980 ax-addass 7981 ax-mulass 7982 ax-distr 7983 ax-i2m1 7984 ax-0lt1 7985 ax-1rid 7986 ax-0id 7987 ax-rnegex 7988 ax-precex 7989 ax-cnre 7990 ax-pre-ltirr 7991 ax-pre-ltwlin 7992 ax-pre-lttrn 7993 ax-pre-apti 7994 ax-pre-ltadd 7995 ax-pre-mulgt0 7996 ax-pre-mulext 7997 ax-arch 7998 ax-caucvg 7999 | 
| This theorem depends on definitions: df-bi 117 df-stab 832 df-dc 836 df-3or 981 df-3an 982 df-tru 1367 df-fal 1370 df-xor 1387 df-nf 1475 df-sb 1777 df-eu 2048 df-mo 2049 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ne 2368 df-nel 2463 df-ral 2480 df-rex 2481 df-reu 2482 df-rmo 2483 df-rab 2484 df-v 2765 df-sbc 2990 df-csb 3085 df-dif 3159 df-un 3161 df-in 3163 df-ss 3170 df-nul 3451 df-if 3562 df-pw 3607 df-sn 3628 df-pr 3629 df-op 3631 df-uni 3840 df-int 3875 df-iun 3918 df-br 4034 df-opab 4095 df-mpt 4096 df-tr 4132 df-id 4328 df-po 4331 df-iso 4332 df-iord 4401 df-on 4403 df-ilim 4404 df-suc 4406 df-iom 4627 df-xp 4669 df-rel 4670 df-cnv 4671 df-co 4672 df-dm 4673 df-rn 4674 df-res 4675 df-ima 4676 df-iota 5219 df-fun 5260 df-fn 5261 df-f 5262 df-f1 5263 df-fo 5264 df-f1o 5265 df-fv 5266 df-riota 5877 df-ov 5925 df-oprab 5926 df-mpo 5927 df-1st 6198 df-2nd 6199 df-recs 6363 df-frec 6449 df-1o 6474 df-2o 6475 df-er 6592 df-en 6800 df-sup 7050 df-pnf 8063 df-mnf 8064 df-xr 8065 df-ltxr 8066 df-le 8067 df-sub 8199 df-neg 8200 df-reap 8602 df-ap 8609 df-div 8700 df-inn 8991 df-2 9049 df-3 9050 df-4 9051 df-n0 9250 df-z 9327 df-uz 9602 df-q 9694 df-rp 9729 df-fz 10084 df-fzo 10218 df-fl 10360 df-mod 10415 df-seqfrec 10540 df-exp 10631 df-cj 11007 df-re 11008 df-im 11009 df-rsqrt 11163 df-abs 11164 df-dvds 11953 df-gcd 12121 df-prm 12276 | 
| This theorem is referenced by: sqrt2irrap 12348 | 
| Copyright terms: Public domain | W3C validator |