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| Mirrors > Home > MPE Home > Th. List > pn0sr | Structured version Visualization version GIF version | ||
| Description: A signed real plus its negative is zero. (Contributed by NM, 14-May-1996.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| pn0sr | ⊢ (𝐴 ∈ R → (𝐴 +R (𝐴 ·R -1R)) = 0R) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1idsr 11058 | . . 3 ⊢ (𝐴 ∈ R → (𝐴 ·R 1R) = 𝐴) | |
| 2 | 1 | oveq1d 7413 | . 2 ⊢ (𝐴 ∈ R → ((𝐴 ·R 1R) +R (𝐴 ·R -1R)) = (𝐴 +R (𝐴 ·R -1R))) |
| 3 | distrsr 11051 | . . . 4 ⊢ (𝐴 ·R (-1R +R 1R)) = ((𝐴 ·R -1R) +R (𝐴 ·R 1R)) | |
| 4 | m1p1sr 11052 | . . . . 5 ⊢ (-1R +R 1R) = 0R | |
| 5 | 4 | oveq2i 7409 | . . . 4 ⊢ (𝐴 ·R (-1R +R 1R)) = (𝐴 ·R 0R) |
| 6 | addcomsr 11047 | . . . 4 ⊢ ((𝐴 ·R -1R) +R (𝐴 ·R 1R)) = ((𝐴 ·R 1R) +R (𝐴 ·R -1R)) | |
| 7 | 3, 5, 6 | 3eqtr3i 2795 | . . 3 ⊢ (𝐴 ·R 0R) = ((𝐴 ·R 1R) +R (𝐴 ·R -1R)) |
| 8 | 00sr 11059 | . . 3 ⊢ (𝐴 ∈ R → (𝐴 ·R 0R) = 0R) | |
| 9 | 7, 8 | eqtr3id 2813 | . 2 ⊢ (𝐴 ∈ R → ((𝐴 ·R 1R) +R (𝐴 ·R -1R)) = 0R) |
| 10 | 2, 9 | eqtr3d 2801 | 1 ⊢ (𝐴 ∈ R → (𝐴 +R (𝐴 ·R -1R)) = 0R) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1562 ∈ wcel 2144 (class class class)co 7398 Rcnr 10825 0Rc0r 10826 1Rc1r 10827 -1Rcm1r 10828 +R cplr 10829 ·R cmr 10830 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1817 ax-4 1831 ax-5 1932 ax-6 1989 ax-7 2030 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2214 ax-ext 2736 ax-sep 5248 ax-nul 5258 ax-pow 5324 ax-pr 5392 ax-un 7720 ax-inf2 9598 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1100 df-3an 1101 df-tru 1565 df-fal 1575 df-ex 1802 df-nf 1806 df-sb 2093 df-mo 2568 df-eu 2598 df-clab 2743 df-cleq 2756 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3079 df-rex 3089 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3458 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4288 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-int 4908 df-iun 4953 df-br 5103 df-opab 5165 df-mpt 5184 df-tr 5210 df-id 5544 df-eprel 5549 df-po 5557 df-so 5558 df-fr 5602 df-we 5604 df-xp 5655 df-rel 5656 df-cnv 5657 df-co 5658 df-dm 5659 df-rn 5660 df-res 5661 df-ima 5662 df-pred 6290 df-ord 6351 df-on 6352 df-lim 6353 df-suc 6354 df-iota 6479 df-fun 6525 df-fn 6526 df-f 6527 df-f1 6528 df-fo 6529 df-f1o 6530 df-fv 6531 df-ov 7401 df-oprab 7402 df-mpo 7403 df-om 7849 df-1st 7972 df-2nd 7973 df-frecs 8264 df-wrecs 8295 df-recs 8344 df-rdg 8383 df-1o 8439 df-oadd 8443 df-omul 8444 df-er 8680 df-ec 8682 df-qs 8686 df-ni 10832 df-pli 10833 df-mi 10834 df-lti 10835 df-plpq 10868 df-mpq 10869 df-ltpq 10870 df-enq 10871 df-nq 10872 df-erq 10873 df-plq 10874 df-mq 10875 df-1nq 10876 df-rq 10877 df-ltnq 10878 df-np 10941 df-1p 10942 df-plp 10943 df-mp 10944 df-ltp 10945 df-enr 11015 df-nr 11016 df-plr 11017 df-mr 11018 df-0r 11020 df-1r 11021 df-m1r 11022 |
| This theorem is referenced by: negexsr 11062 sqgt0sr 11066 map2psrpr 11070 axrnegex 11122 |
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