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Mirrors > Home > ILE Home > Th. List > resqrexlemfp1 | Unicode version |
Description: Lemma for resqrex 11055. Recursion rule. This sequence is the ancient method for computing square roots, often known as the babylonian method, although known to many ancient cultures. (Contributed by Mario Carneiro and Jim Kingdon, 27-Jul-2021.) |
Ref | Expression |
---|---|
resqrexlemex.seq |
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resqrexlemex.a |
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resqrexlemex.agt0 |
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Ref | Expression |
---|---|
resqrexlemfp1 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elnnuz 9584 |
. . . . . 6
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2 | 1 | biimpi 120 |
. . . . 5
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3 | 2 | adantl 277 |
. . . 4
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4 | elnnuz 9584 |
. . . . . 6
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |
5 | resqrexlemex.a |
. . . . . . 7
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6 | resqrexlemex.agt0 |
. . . . . . 7
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7 | 5, 6 | resqrexlem1arp 11034 |
. . . . . 6
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
8 | 4, 7 | sylan2br 288 |
. . . . 5
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9 | 8 | adantlr 477 |
. . . 4
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10 | 5, 6 | resqrexlemp1rp 11035 |
. . . . 5
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11 | 10 | adantlr 477 |
. . . 4
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12 | 3, 9, 11 | seq3p1 10482 |
. . 3
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13 | resqrexlemex.seq |
. . . 4
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14 | 13 | fveq1i 5532 |
. . 3
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15 | 13 | fveq1i 5532 |
. . . 4
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16 | 15 | oveq1i 5902 |
. . 3
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17 | 12, 14, 16 | 3eqtr4g 2247 |
. 2
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18 | id 19 |
. . . . . . 7
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19 | oveq2 5900 |
. . . . . . 7
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20 | 18, 19 | oveq12d 5910 |
. . . . . 6
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21 | 20 | oveq1d 5907 |
. . . . 5
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22 | eqidd 2190 |
. . . . 5
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23 | 21, 22 | cbvmpov 5972 |
. . . 4
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24 | 23 | a1i 9 |
. . 3
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25 | id 19 |
. . . . . 6
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26 | oveq2 5900 |
. . . . . 6
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |
27 | 25, 26 | oveq12d 5910 |
. . . . 5
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28 | 27 | oveq1d 5907 |
. . . 4
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29 | 28 | ad2antrl 490 |
. . 3
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30 | 13, 5, 6 | resqrexlemf 11036 |
. . . 4
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31 | 30 | ffvelcdmda 5668 |
. . 3
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32 | peano2nn 8951 |
. . . 4
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33 | 5, 6 | resqrexlem1arp 11034 |
. . . 4
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34 | 32, 33 | sylan2 286 |
. . 3
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35 | 31 | rpred 9716 |
. . . . 5
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
36 | 5 | adantr 276 |
. . . . . 6
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37 | 36, 31 | rerpdivcld 9748 |
. . . . 5
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38 | 35, 37 | readdcld 8007 |
. . . 4
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39 | 38 | rehalfcld 9185 |
. . 3
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40 | 24, 29, 31, 34, 39 | ovmpod 6020 |
. 2
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41 | 17, 40 | eqtrd 2222 |
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 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-13 2162 ax-14 2163 ax-ext 2171 ax-coll 4133 ax-sep 4136 ax-nul 4144 ax-pow 4189 ax-pr 4224 ax-un 4448 ax-setind 4551 ax-iinf 4602 ax-cnex 7922 ax-resscn 7923 ax-1cn 7924 ax-1re 7925 ax-icn 7926 ax-addcl 7927 ax-addrcl 7928 ax-mulcl 7929 ax-mulrcl 7930 ax-addcom 7931 ax-mulcom 7932 ax-addass 7933 ax-mulass 7934 ax-distr 7935 ax-i2m1 7936 ax-0lt1 7937 ax-1rid 7938 ax-0id 7939 ax-rnegex 7940 ax-precex 7941 ax-cnre 7942 ax-pre-ltirr 7943 ax-pre-ltwlin 7944 ax-pre-lttrn 7945 ax-pre-apti 7946 ax-pre-ltadd 7947 ax-pre-mulgt0 7948 ax-pre-mulext 7949 |
This theorem depends on definitions: df-bi 117 df-3or 981 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1472 df-sb 1774 df-eu 2041 df-mo 2042 df-clab 2176 df-cleq 2182 df-clel 2185 df-nfc 2321 df-ne 2361 df-nel 2456 df-ral 2473 df-rex 2474 df-reu 2475 df-rmo 2476 df-rab 2477 df-v 2754 df-sbc 2978 df-csb 3073 df-dif 3146 df-un 3148 df-in 3150 df-ss 3157 df-nul 3438 df-pw 3592 df-sn 3613 df-pr 3614 df-op 3616 df-uni 3825 df-int 3860 df-iun 3903 df-br 4019 df-opab 4080 df-mpt 4081 df-tr 4117 df-id 4308 df-po 4311 df-iso 4312 df-iord 4381 df-on 4383 df-ilim 4384 df-suc 4386 df-iom 4605 df-xp 4647 df-rel 4648 df-cnv 4649 df-co 4650 df-dm 4651 df-rn 4652 df-res 4653 df-ima 4654 df-iota 5193 df-fun 5234 df-fn 5235 df-f 5236 df-f1 5237 df-fo 5238 df-f1o 5239 df-fv 5240 df-riota 5848 df-ov 5895 df-oprab 5896 df-mpo 5897 df-1st 6160 df-2nd 6161 df-recs 6325 df-frec 6411 df-pnf 8014 df-mnf 8015 df-xr 8016 df-ltxr 8017 df-le 8018 df-sub 8150 df-neg 8151 df-reap 8552 df-ap 8559 df-div 8650 df-inn 8940 df-2 8998 df-n0 9197 df-z 9274 df-uz 9549 df-rp 9674 df-seqfrec 10466 |
This theorem is referenced by: resqrexlemover 11039 resqrexlemdec 11040 resqrexlemlo 11042 resqrexlemcalc1 11043 |
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