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| Mirrors > Home > ILE Home > Th. List > nn0opth2d | GIF version | ||
| Description: An ordered pair theorem for nonnegative integers. Theorem 17.3 of [Quine] p. 124. See comments for nn0opthd 11028. (Contributed by Jim Kingdon, 31-Oct-2021.) |
| Ref | Expression |
|---|---|
| nn0opthd.1 | ⊢ (𝜑 → 𝐴 ∈ ℕ0) |
| nn0opthd.2 | ⊢ (𝜑 → 𝐵 ∈ ℕ0) |
| nn0opthd.3 | ⊢ (𝜑 → 𝐶 ∈ ℕ0) |
| nn0opthd.4 | ⊢ (𝜑 → 𝐷 ∈ ℕ0) |
| Ref | Expression |
|---|---|
| nn0opth2d | ⊢ (𝜑 → ((((𝐴 + 𝐵)↑2) + 𝐵) = (((𝐶 + 𝐷)↑2) + 𝐷) ↔ (𝐴 = 𝐶 ∧ 𝐵 = 𝐷))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nn0opthd.1 | . . . . . . 7 ⊢ (𝜑 → 𝐴 ∈ ℕ0) | |
| 2 | nn0opthd.2 | . . . . . . 7 ⊢ (𝜑 → 𝐵 ∈ ℕ0) | |
| 3 | 1, 2 | nn0addcld 9502 | . . . . . 6 ⊢ (𝜑 → (𝐴 + 𝐵) ∈ ℕ0) |
| 4 | 3 | nn0cnd 9500 | . . . . 5 ⊢ (𝜑 → (𝐴 + 𝐵) ∈ ℂ) |
| 5 | 4 | sqvald 10976 | . . . 4 ⊢ (𝜑 → ((𝐴 + 𝐵)↑2) = ((𝐴 + 𝐵) · (𝐴 + 𝐵))) |
| 6 | 5 | oveq1d 6043 | . . 3 ⊢ (𝜑 → (((𝐴 + 𝐵)↑2) + 𝐵) = (((𝐴 + 𝐵) · (𝐴 + 𝐵)) + 𝐵)) |
| 7 | nn0opthd.3 | . . . . . . 7 ⊢ (𝜑 → 𝐶 ∈ ℕ0) | |
| 8 | nn0opthd.4 | . . . . . . 7 ⊢ (𝜑 → 𝐷 ∈ ℕ0) | |
| 9 | 7, 8 | nn0addcld 9502 | . . . . . 6 ⊢ (𝜑 → (𝐶 + 𝐷) ∈ ℕ0) |
| 10 | 9 | nn0cnd 9500 | . . . . 5 ⊢ (𝜑 → (𝐶 + 𝐷) ∈ ℂ) |
| 11 | 10 | sqvald 10976 | . . . 4 ⊢ (𝜑 → ((𝐶 + 𝐷)↑2) = ((𝐶 + 𝐷) · (𝐶 + 𝐷))) |
| 12 | 11 | oveq1d 6043 | . . 3 ⊢ (𝜑 → (((𝐶 + 𝐷)↑2) + 𝐷) = (((𝐶 + 𝐷) · (𝐶 + 𝐷)) + 𝐷)) |
| 13 | 6, 12 | eqeq12d 2246 | . 2 ⊢ (𝜑 → ((((𝐴 + 𝐵)↑2) + 𝐵) = (((𝐶 + 𝐷)↑2) + 𝐷) ↔ (((𝐴 + 𝐵) · (𝐴 + 𝐵)) + 𝐵) = (((𝐶 + 𝐷) · (𝐶 + 𝐷)) + 𝐷))) |
| 14 | 1, 2, 7, 8 | nn0opthd 11028 | . 2 ⊢ (𝜑 → ((((𝐴 + 𝐵) · (𝐴 + 𝐵)) + 𝐵) = (((𝐶 + 𝐷) · (𝐶 + 𝐷)) + 𝐷) ↔ (𝐴 = 𝐶 ∧ 𝐵 = 𝐷))) |
| 15 | 13, 14 | bitrd 188 | 1 ⊢ (𝜑 → ((((𝐴 + 𝐵)↑2) + 𝐵) = (((𝐶 + 𝐷)↑2) + 𝐷) ↔ (𝐴 = 𝐶 ∧ 𝐵 = 𝐷))) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 = wceq 1398 ∈ wcel 2202 (class class class)co 6028 + caddc 8078 · cmul 8080 2c2 9237 ℕ0cn0 9445 ↑cexp 10844 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2204 ax-14 2205 ax-ext 2213 ax-coll 4209 ax-sep 4212 ax-nul 4220 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-setind 4641 ax-iinf 4692 ax-cnex 8166 ax-resscn 8167 ax-1cn 8168 ax-1re 8169 ax-icn 8170 ax-addcl 8171 ax-addrcl 8172 ax-mulcl 8173 ax-mulrcl 8174 ax-addcom 8175 ax-mulcom 8176 ax-addass 8177 ax-mulass 8178 ax-distr 8179 ax-i2m1 8180 ax-0lt1 8181 ax-1rid 8182 ax-0id 8183 ax-rnegex 8184 ax-precex 8185 ax-cnre 8186 ax-pre-ltirr 8187 ax-pre-ltwlin 8188 ax-pre-lttrn 8189 ax-pre-apti 8190 ax-pre-ltadd 8191 ax-pre-mulgt0 8192 ax-pre-mulext 8193 |
| This theorem depends on definitions: df-bi 117 df-dc 843 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ne 2404 df-nel 2499 df-ral 2516 df-rex 2517 df-reu 2518 df-rmo 2519 df-rab 2520 df-v 2805 df-sbc 3033 df-csb 3129 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-nul 3497 df-if 3608 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-int 3934 df-iun 3977 df-br 4094 df-opab 4156 df-mpt 4157 df-tr 4193 df-id 4396 df-po 4399 df-iso 4400 df-iord 4469 df-on 4471 df-ilim 4472 df-suc 4474 df-iom 4695 df-xp 4737 df-rel 4738 df-cnv 4739 df-co 4740 df-dm 4741 df-rn 4742 df-res 4743 df-ima 4744 df-iota 5293 df-fun 5335 df-fn 5336 df-f 5337 df-f1 5338 df-fo 5339 df-f1o 5340 df-fv 5341 df-riota 5981 df-ov 6031 df-oprab 6032 df-mpo 6033 df-1st 6312 df-2nd 6313 df-recs 6514 df-frec 6600 df-pnf 8259 df-mnf 8260 df-xr 8261 df-ltxr 8262 df-le 8263 df-sub 8395 df-neg 8396 df-reap 8798 df-ap 8805 df-div 8896 df-inn 9187 df-2 9245 df-n0 9446 df-z 9523 df-uz 9799 df-seqfrec 10754 df-exp 10845 |
| This theorem is referenced by: nn0opth2 11030 |
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