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Mirrors > Home > ILE Home > Th. List > resqrexlemfp1 | Unicode version |
Description: Lemma for resqrex 10830. 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 9386 |
. . . . . 6
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2 | 1 | biimpi 119 |
. . . . 5
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3 | 2 | adantl 275 |
. . . 4
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4 | elnnuz 9386 |
. . . . . 6
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5 | resqrexlemex.a |
. . . . . . 7
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6 | resqrexlemex.agt0 |
. . . . . . 7
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7 | 5, 6 | resqrexlem1arp 10809 |
. . . . . 6
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8 | 4, 7 | sylan2br 286 |
. . . . 5
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9 | 8 | adantlr 469 |
. . . 4
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10 | 5, 6 | resqrexlemp1rp 10810 |
. . . . 5
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11 | 10 | adantlr 469 |
. . . 4
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12 | 3, 9, 11 | seq3p1 10266 |
. . 3
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13 | resqrexlemex.seq |
. . . 4
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14 | 13 | fveq1i 5430 |
. . 3
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15 | 13 | fveq1i 5430 |
. . . 4
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16 | 15 | oveq1i 5792 |
. . 3
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17 | 12, 14, 16 | 3eqtr4g 2198 |
. 2
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18 | id 19 |
. . . . . . 7
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19 | oveq2 5790 |
. . . . . . 7
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20 | 18, 19 | oveq12d 5800 |
. . . . . 6
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21 | 20 | oveq1d 5797 |
. . . . 5
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22 | eqidd 2141 |
. . . . 5
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23 | 21, 22 | cbvmpov 5859 |
. . . 4
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24 | 23 | a1i 9 |
. . 3
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25 | id 19 |
. . . . . 6
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26 | oveq2 5790 |
. . . . . 6
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27 | 25, 26 | oveq12d 5800 |
. . . . 5
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28 | 27 | oveq1d 5797 |
. . . 4
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29 | 28 | ad2antrl 482 |
. . 3
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30 | 13, 5, 6 | resqrexlemf 10811 |
. . . 4
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31 | 30 | ffvelrnda 5563 |
. . 3
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32 | peano2nn 8756 |
. . . 4
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33 | 5, 6 | resqrexlem1arp 10809 |
. . . 4
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34 | 32, 33 | sylan2 284 |
. . 3
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35 | 31 | rpred 9513 |
. . . . 5
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36 | 5 | adantr 274 |
. . . . . 6
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37 | 36, 31 | rerpdivcld 9545 |
. . . . 5
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38 | 35, 37 | readdcld 7819 |
. . . 4
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39 | 38 | rehalfcld 8990 |
. . 3
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40 | 24, 29, 31, 34, 39 | ovmpod 5906 |
. 2
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41 | 17, 40 | eqtrd 2173 |
1
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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 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1483 ax-10 1484 ax-11 1485 ax-i12 1486 ax-bndl 1487 ax-4 1488 ax-13 1492 ax-14 1493 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 ax-coll 4051 ax-sep 4054 ax-nul 4062 ax-pow 4106 ax-pr 4139 ax-un 4363 ax-setind 4460 ax-iinf 4510 ax-cnex 7735 ax-resscn 7736 ax-1cn 7737 ax-1re 7738 ax-icn 7739 ax-addcl 7740 ax-addrcl 7741 ax-mulcl 7742 ax-mulrcl 7743 ax-addcom 7744 ax-mulcom 7745 ax-addass 7746 ax-mulass 7747 ax-distr 7748 ax-i2m1 7749 ax-0lt1 7750 ax-1rid 7751 ax-0id 7752 ax-rnegex 7753 ax-precex 7754 ax-cnre 7755 ax-pre-ltirr 7756 ax-pre-ltwlin 7757 ax-pre-lttrn 7758 ax-pre-apti 7759 ax-pre-ltadd 7760 ax-pre-mulgt0 7761 ax-pre-mulext 7762 |
This theorem depends on definitions: df-bi 116 df-3or 964 df-3an 965 df-tru 1335 df-fal 1338 df-nf 1438 df-sb 1737 df-eu 2003 df-mo 2004 df-clab 2127 df-cleq 2133 df-clel 2136 df-nfc 2271 df-ne 2310 df-nel 2405 df-ral 2422 df-rex 2423 df-reu 2424 df-rmo 2425 df-rab 2426 df-v 2691 df-sbc 2914 df-csb 3008 df-dif 3078 df-un 3080 df-in 3082 df-ss 3089 df-nul 3369 df-pw 3517 df-sn 3538 df-pr 3539 df-op 3541 df-uni 3745 df-int 3780 df-iun 3823 df-br 3938 df-opab 3998 df-mpt 3999 df-tr 4035 df-id 4223 df-po 4226 df-iso 4227 df-iord 4296 df-on 4298 df-ilim 4299 df-suc 4301 df-iom 4513 df-xp 4553 df-rel 4554 df-cnv 4555 df-co 4556 df-dm 4557 df-rn 4558 df-res 4559 df-ima 4560 df-iota 5096 df-fun 5133 df-fn 5134 df-f 5135 df-f1 5136 df-fo 5137 df-f1o 5138 df-fv 5139 df-riota 5738 df-ov 5785 df-oprab 5786 df-mpo 5787 df-1st 6046 df-2nd 6047 df-recs 6210 df-frec 6296 df-pnf 7826 df-mnf 7827 df-xr 7828 df-ltxr 7829 df-le 7830 df-sub 7959 df-neg 7960 df-reap 8361 df-ap 8368 df-div 8457 df-inn 8745 df-2 8803 df-n0 9002 df-z 9079 df-uz 9351 df-rp 9471 df-seqfrec 10250 |
This theorem is referenced by: resqrexlemover 10814 resqrexlemdec 10815 resqrexlemlo 10817 resqrexlemcalc1 10818 |
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