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| Mirrors > Home > MPE Home > Th. List > nn0opth2i | Structured version Visualization version GIF version | ||
| Description: An ordered pair theorem for nonnegative integers. Theorem 17.3 of [Quine] p. 124. See comments for nn0opthi 14211. (Contributed by NM, 22-Jul-2004.) |
| Ref | Expression |
|---|---|
| nn0opth.1 | ⊢ 𝐴 ∈ ℕ0 |
| nn0opth.2 | ⊢ 𝐵 ∈ ℕ0 |
| nn0opth.3 | ⊢ 𝐶 ∈ ℕ0 |
| nn0opth.4 | ⊢ 𝐷 ∈ ℕ0 |
| Ref | Expression |
|---|---|
| nn0opth2i | ⊢ ((((𝐴 + 𝐵)↑2) + 𝐵) = (((𝐶 + 𝐷)↑2) + 𝐷) ↔ (𝐴 = 𝐶 ∧ 𝐵 = 𝐷)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nn0opth.1 | . . . . . . 7 ⊢ 𝐴 ∈ ℕ0 | |
| 2 | 1 | nn0cni 12430 | . . . . . 6 ⊢ 𝐴 ∈ ℂ |
| 3 | nn0opth.2 | . . . . . . 7 ⊢ 𝐵 ∈ ℕ0 | |
| 4 | 3 | nn0cni 12430 | . . . . . 6 ⊢ 𝐵 ∈ ℂ |
| 5 | 2, 4 | addcli 11156 | . . . . 5 ⊢ (𝐴 + 𝐵) ∈ ℂ |
| 6 | 5 | sqvali 14121 | . . . 4 ⊢ ((𝐴 + 𝐵)↑2) = ((𝐴 + 𝐵) · (𝐴 + 𝐵)) |
| 7 | 6 | oveq1i 7379 | . . 3 ⊢ (((𝐴 + 𝐵)↑2) + 𝐵) = (((𝐴 + 𝐵) · (𝐴 + 𝐵)) + 𝐵) |
| 8 | nn0opth.3 | . . . . . . 7 ⊢ 𝐶 ∈ ℕ0 | |
| 9 | 8 | nn0cni 12430 | . . . . . 6 ⊢ 𝐶 ∈ ℂ |
| 10 | nn0opth.4 | . . . . . . 7 ⊢ 𝐷 ∈ ℕ0 | |
| 11 | 10 | nn0cni 12430 | . . . . . 6 ⊢ 𝐷 ∈ ℂ |
| 12 | 9, 11 | addcli 11156 | . . . . 5 ⊢ (𝐶 + 𝐷) ∈ ℂ |
| 13 | 12 | sqvali 14121 | . . . 4 ⊢ ((𝐶 + 𝐷)↑2) = ((𝐶 + 𝐷) · (𝐶 + 𝐷)) |
| 14 | 13 | oveq1i 7379 | . . 3 ⊢ (((𝐶 + 𝐷)↑2) + 𝐷) = (((𝐶 + 𝐷) · (𝐶 + 𝐷)) + 𝐷) |
| 15 | 7, 14 | eqeq12i 2747 | . 2 ⊢ ((((𝐴 + 𝐵)↑2) + 𝐵) = (((𝐶 + 𝐷)↑2) + 𝐷) ↔ (((𝐴 + 𝐵) · (𝐴 + 𝐵)) + 𝐵) = (((𝐶 + 𝐷) · (𝐶 + 𝐷)) + 𝐷)) |
| 16 | 1, 3, 8, 10 | nn0opthi 14211 | . 2 ⊢ ((((𝐴 + 𝐵) · (𝐴 + 𝐵)) + 𝐵) = (((𝐶 + 𝐷) · (𝐶 + 𝐷)) + 𝐷) ↔ (𝐴 = 𝐶 ∧ 𝐵 = 𝐷)) |
| 17 | 15, 16 | bitri 275 | 1 ⊢ ((((𝐴 + 𝐵)↑2) + 𝐵) = (((𝐶 + 𝐷)↑2) + 𝐷) ↔ (𝐴 = 𝐶 ∧ 𝐵 = 𝐷)) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 206 ∧ wa 395 = wceq 1540 ∈ wcel 2109 (class class class)co 7369 + caddc 11047 · cmul 11049 2c2 12217 ℕ0cn0 12418 ↑cexp 14002 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5246 ax-nul 5256 ax-pow 5315 ax-pr 5382 ax-un 7691 ax-cnex 11100 ax-resscn 11101 ax-1cn 11102 ax-icn 11103 ax-addcl 11104 ax-addrcl 11105 ax-mulcl 11106 ax-mulrcl 11107 ax-mulcom 11108 ax-addass 11109 ax-mulass 11110 ax-distr 11111 ax-i2m1 11112 ax-1ne0 11113 ax-1rid 11114 ax-rnegex 11115 ax-rrecex 11116 ax-cnre 11117 ax-pre-lttri 11118 ax-pre-lttrn 11119 ax-pre-ltadd 11120 ax-pre-mulgt0 11121 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-reu 3352 df-rab 3403 df-v 3446 df-sbc 3751 df-csb 3860 df-dif 3914 df-un 3916 df-in 3918 df-ss 3928 df-pss 3931 df-nul 4293 df-if 4485 df-pw 4561 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4868 df-iun 4953 df-br 5103 df-opab 5165 df-mpt 5184 df-tr 5210 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6262 df-ord 6323 df-on 6324 df-lim 6325 df-suc 6326 df-iota 6452 df-fun 6501 df-fn 6502 df-f 6503 df-f1 6504 df-fo 6505 df-f1o 6506 df-fv 6507 df-riota 7326 df-ov 7372 df-oprab 7373 df-mpo 7374 df-om 7823 df-2nd 7948 df-frecs 8237 df-wrecs 8268 df-recs 8317 df-rdg 8355 df-er 8648 df-en 8896 df-dom 8897 df-sdom 8898 df-pnf 11186 df-mnf 11187 df-xr 11188 df-ltxr 11189 df-le 11190 df-sub 11383 df-neg 11384 df-nn 12163 df-2 12225 df-n0 12419 df-z 12506 df-uz 12770 df-seq 13943 df-exp 14003 |
| This theorem is referenced by: nn0opth2 14213 |
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