| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 10996 | . . 3 ⊢ (𝐴 ∈ R → (𝐴 ·R 1R) = 𝐴) | |
| 2 | 1 | oveq1d 7367 | . 2 ⊢ (𝐴 ∈ R → ((𝐴 ·R 1R) +R (𝐴 ·R -1R)) = (𝐴 +R (𝐴 ·R -1R))) |
| 3 | distrsr 10989 | . . . 4 ⊢ (𝐴 ·R (-1R +R 1R)) = ((𝐴 ·R -1R) +R (𝐴 ·R 1R)) | |
| 4 | m1p1sr 10990 | . . . . 5 ⊢ (-1R +R 1R) = 0R | |
| 5 | 4 | oveq2i 7363 | . . . 4 ⊢ (𝐴 ·R (-1R +R 1R)) = (𝐴 ·R 0R) |
| 6 | addcomsr 10985 | . . . 4 ⊢ ((𝐴 ·R -1R) +R (𝐴 ·R 1R)) = ((𝐴 ·R 1R) +R (𝐴 ·R -1R)) | |
| 7 | 3, 5, 6 | 3eqtr3i 2764 | . . 3 ⊢ (𝐴 ·R 0R) = ((𝐴 ·R 1R) +R (𝐴 ·R -1R)) |
| 8 | 00sr 10997 | . . 3 ⊢ (𝐴 ∈ R → (𝐴 ·R 0R) = 0R) | |
| 9 | 7, 8 | eqtr3id 2782 | . 2 ⊢ (𝐴 ∈ R → ((𝐴 ·R 1R) +R (𝐴 ·R -1R)) = 0R) |
| 10 | 2, 9 | eqtr3d 2770 | 1 ⊢ (𝐴 ∈ R → (𝐴 +R (𝐴 ·R -1R)) = 0R) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1541 ∈ wcel 2113 (class class class)co 7352 Rcnr 10763 0Rc0r 10764 1Rc1r 10765 -1Rcm1r 10766 +R cplr 10767 ·R cmr 10768 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2705 ax-sep 5236 ax-nul 5246 ax-pow 5305 ax-pr 5372 ax-un 7674 ax-inf2 9538 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2566 df-clab 2712 df-cleq 2725 df-clel 2808 df-nfc 2882 df-ne 2930 df-ral 3049 df-rex 3058 df-rmo 3347 df-reu 3348 df-rab 3397 df-v 3439 df-sbc 3738 df-csb 3847 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-pss 3918 df-nul 4283 df-if 4475 df-pw 4551 df-sn 4576 df-pr 4578 df-op 4582 df-uni 4859 df-int 4898 df-iun 4943 df-br 5094 df-opab 5156 df-mpt 5175 df-tr 5201 df-id 5514 df-eprel 5519 df-po 5527 df-so 5528 df-fr 5572 df-we 5574 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-ima 5632 df-pred 6253 df-ord 6314 df-on 6315 df-lim 6316 df-suc 6317 df-iota 6442 df-fun 6488 df-fn 6489 df-f 6490 df-f1 6491 df-fo 6492 df-f1o 6493 df-fv 6494 df-ov 7355 df-oprab 7356 df-mpo 7357 df-om 7803 df-1st 7927 df-2nd 7928 df-frecs 8217 df-wrecs 8248 df-recs 8297 df-rdg 8335 df-1o 8391 df-oadd 8395 df-omul 8396 df-er 8628 df-ec 8630 df-qs 8634 df-ni 10770 df-pli 10771 df-mi 10772 df-lti 10773 df-plpq 10806 df-mpq 10807 df-ltpq 10808 df-enq 10809 df-nq 10810 df-erq 10811 df-plq 10812 df-mq 10813 df-1nq 10814 df-rq 10815 df-ltnq 10816 df-np 10879 df-1p 10880 df-plp 10881 df-mp 10882 df-ltp 10883 df-enr 10953 df-nr 10954 df-plr 10955 df-mr 10956 df-0r 10958 df-1r 10959 df-m1r 10960 |
| This theorem is referenced by: negexsr 11000 sqgt0sr 11004 map2psrpr 11008 axrnegex 11060 |
| Copyright terms: Public domain | W3C validator |