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Mirrors > Home > MPE Home > Th. List > sqge0i | Structured version Unicode version |
Description: A square of a real is nonnegative. (Contributed by NM, 3-Aug-1999.) |
Ref | Expression |
---|---|
resqcl.1 |
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Ref | Expression |
---|---|
sqge0i |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | resqcl.1 |
. . 3
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2 | 1 | msqge0i 9976 |
. 2
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3 | 1 | recni 9496 |
. . 3
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4 | 3 | sqvali 12043 |
. 2
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5 | 2, 4 | breqtrri 4412 |
1
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Colors of variables: wff setvar class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1592 ax-4 1603 ax-5 1671 ax-6 1710 ax-7 1730 ax-8 1760 ax-9 1762 ax-10 1777 ax-11 1782 ax-12 1794 ax-13 1952 ax-ext 2430 ax-sep 4508 ax-nul 4516 ax-pow 4565 ax-pr 4626 ax-un 6469 ax-cnex 9436 ax-resscn 9437 ax-1cn 9438 ax-icn 9439 ax-addcl 9440 ax-addrcl 9441 ax-mulcl 9442 ax-mulrcl 9443 ax-mulcom 9444 ax-addass 9445 ax-mulass 9446 ax-distr 9447 ax-i2m1 9448 ax-1ne0 9449 ax-1rid 9450 ax-rnegex 9451 ax-rrecex 9452 ax-cnre 9453 ax-pre-lttri 9454 ax-pre-lttrn 9455 ax-pre-ltadd 9456 ax-pre-mulgt0 9457 |
This theorem depends on definitions: df-bi 185 df-or 370 df-an 371 df-3or 966 df-3an 967 df-tru 1373 df-ex 1588 df-nf 1591 df-sb 1703 df-eu 2264 df-mo 2265 df-clab 2437 df-cleq 2443 df-clel 2446 df-nfc 2599 df-ne 2644 df-nel 2645 df-ral 2798 df-rex 2799 df-reu 2800 df-rab 2802 df-v 3067 df-sbc 3282 df-csb 3384 df-dif 3426 df-un 3428 df-in 3430 df-ss 3437 df-pss 3439 df-nul 3733 df-if 3887 df-pw 3957 df-sn 3973 df-pr 3975 df-tp 3977 df-op 3979 df-uni 4187 df-iun 4268 df-br 4388 df-opab 4446 df-mpt 4447 df-tr 4481 df-eprel 4727 df-id 4731 df-po 4736 df-so 4737 df-fr 4774 df-we 4776 df-ord 4817 df-on 4818 df-lim 4819 df-suc 4820 df-xp 4941 df-rel 4942 df-cnv 4943 df-co 4944 df-dm 4945 df-rn 4946 df-res 4947 df-ima 4948 df-iota 5476 df-fun 5515 df-fn 5516 df-f 5517 df-f1 5518 df-fo 5519 df-f1o 5520 df-fv 5521 df-riota 6148 df-ov 6190 df-oprab 6191 df-mpt2 6192 df-om 6574 df-2nd 6675 df-recs 6929 df-rdg 6963 df-er 7198 df-en 7408 df-dom 7409 df-sdom 7410 df-pnf 9518 df-mnf 9519 df-xr 9520 df-ltxr 9521 df-le 9522 df-sub 9695 df-neg 9696 df-nn 10421 df-2 10478 df-n0 10678 df-z 10745 df-uz 10960 df-seq 11905 df-exp 11964 |
This theorem is referenced by: siilem1 24383 siii 24385 normlem6 24649 norm-ii-i 24671 pjssge0ii 25217 |
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