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| Mirrors > Home > MPE Home > Th. List > Mathboxes > constraddcl | Structured version Visualization version GIF version | ||
| Description: Constructive numbers are closed under complex addition. Item (1) of Theorem 7.10 of [Stewart] p. 96. (Contributed by Thierry Arnoux, 2-Nov-2025.) |
| Ref | Expression |
|---|---|
| constraddcl.1 | ⊢ (𝜑 → 𝑋 ∈ Constr) |
| constraddcl.2 | ⊢ (𝜑 → 𝑌 ∈ Constr) |
| Ref | Expression |
|---|---|
| constraddcl | ⊢ (𝜑 → (𝑋 + 𝑌) ∈ Constr) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simpr 490 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 = 𝑌) → 𝑋 = 𝑌) | |
| 2 | 1 | oveq2d 7428 | . . 3 ⊢ ((𝜑 ∧ 𝑋 = 𝑌) → (𝑋 + 𝑋) = (𝑋 + 𝑌)) |
| 3 | 0nn0 12602 | . . . . . . 7 ⊢ 0 ∈ ℕ0 | |
| 4 | 3 | a1i 11 | . . . . . 6 ⊢ (𝜑 → 0 ∈ ℕ0) |
| 5 | 4 | nn0constr 34375 | . . . . 5 ⊢ (𝜑 → 0 ∈ Constr) |
| 6 | constraddcl.1 | . . . . 5 ⊢ (𝜑 → 𝑋 ∈ Constr) | |
| 7 | 2re 12398 | . . . . . 6 ⊢ 2 ∈ ℝ | |
| 8 | 7 | a1i 11 | . . . . 5 ⊢ (𝜑 → 2 ∈ ℝ) |
| 9 | 6 | constrcn 34374 | . . . . . 6 ⊢ (𝜑 → 𝑋 ∈ ℂ) |
| 10 | 9, 9 | addcld 11309 | . . . . 5 ⊢ (𝜑 → (𝑋 + 𝑋) ∈ ℂ) |
| 11 | 2cnd 12402 | . . . . . . . 8 ⊢ (𝜑 → 2 ∈ ℂ) | |
| 12 | 0cnd 11280 | . . . . . . . . 9 ⊢ (𝜑 → 0 ∈ ℂ) | |
| 13 | 9, 12 | subcld 11650 | . . . . . . . 8 ⊢ (𝜑 → (𝑋 − 0) ∈ ℂ) |
| 14 | 11, 13 | mulcld 11310 | . . . . . . 7 ⊢ (𝜑 → (2 · (𝑋 − 0)) ∈ ℂ) |
| 15 | 14 | addlidd 11492 | . . . . . 6 ⊢ (𝜑 → (0 + (2 · (𝑋 − 0))) = (2 · (𝑋 − 0))) |
| 16 | 9 | subid1d 11639 | . . . . . . 7 ⊢ (𝜑 → (𝑋 − 0) = 𝑋) |
| 17 | 16 | oveq2d 7428 | . . . . . 6 ⊢ (𝜑 → (2 · (𝑋 − 0)) = (2 · 𝑋)) |
| 18 | 9 | 2timesd 12570 | . . . . . 6 ⊢ (𝜑 → (2 · 𝑋) = (𝑋 + 𝑋)) |
| 19 | 15, 17, 18 | 3eqtrrd 2801 | . . . . 5 ⊢ (𝜑 → (𝑋 + 𝑋) = (0 + (2 · (𝑋 − 0)))) |
| 20 | 9, 9 | pncand 11651 | . . . . . . 7 ⊢ (𝜑 → ((𝑋 + 𝑋) − 𝑋) = 𝑋) |
| 21 | 20, 16 | eqtr4d 2799 | . . . . . 6 ⊢ (𝜑 → ((𝑋 + 𝑋) − 𝑋) = (𝑋 − 0)) |
| 22 | 21 | fveq2d 6881 | . . . . 5 ⊢ (𝜑 → (abs‘((𝑋 + 𝑋) − 𝑋)) = (abs‘(𝑋 − 0))) |
| 23 | 5, 6, 6, 6, 5, 8, 10, 19, 22 | constrlccl 34371 | . . . 4 ⊢ (𝜑 → (𝑋 + 𝑋) ∈ Constr) |
| 24 | 23 | adantr 486 | . . 3 ⊢ ((𝜑 ∧ 𝑋 = 𝑌) → (𝑋 + 𝑋) ∈ Constr) |
| 25 | 2, 24 | eqeltrrd 2862 | . 2 ⊢ ((𝜑 ∧ 𝑋 = 𝑌) → (𝑋 + 𝑌) ∈ Constr) |
| 26 | 6 | adantr 486 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → 𝑋 ∈ Constr) |
| 27 | constraddcl.2 | . . . 4 ⊢ (𝜑 → 𝑌 ∈ Constr) | |
| 28 | 27 | adantr 486 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → 𝑌 ∈ Constr) |
| 29 | 5 | adantr 486 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → 0 ∈ Constr) |
| 30 | 9 | adantr 486 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → 𝑋 ∈ ℂ) |
| 31 | 27 | constrcn 34374 | . . . . 5 ⊢ (𝜑 → 𝑌 ∈ ℂ) |
| 32 | 31 | adantr 486 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → 𝑌 ∈ ℂ) |
| 33 | 30, 32 | addcld 11309 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → (𝑋 + 𝑌) ∈ ℂ) |
| 34 | simpr 490 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → 𝑋 ≠ 𝑌) | |
| 35 | 30, 32 | pncan2d 11652 | . . . . 5 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → ((𝑋 + 𝑌) − 𝑋) = 𝑌) |
| 36 | 32 | subid1d 11639 | . . . . 5 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → (𝑌 − 0) = 𝑌) |
| 37 | 35, 36 | eqtr4d 2799 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → ((𝑋 + 𝑌) − 𝑋) = (𝑌 − 0)) |
| 38 | 37 | fveq2d 6881 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → (abs‘((𝑋 + 𝑌) − 𝑋)) = (abs‘(𝑌 − 0))) |
| 39 | 30, 32 | pncand 11651 | . . . . 5 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → ((𝑋 + 𝑌) − 𝑌) = 𝑋) |
| 40 | 30 | subid1d 11639 | . . . . 5 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → (𝑋 − 0) = 𝑋) |
| 41 | 39, 40 | eqtr4d 2799 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → ((𝑋 + 𝑌) − 𝑌) = (𝑋 − 0)) |
| 42 | 41 | fveq2d 6881 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → (abs‘((𝑋 + 𝑌) − 𝑌)) = (abs‘(𝑋 − 0))) |
| 43 | 26, 28, 29, 28, 26, 29, 33, 34, 38, 42 | constrcccl 34372 | . 2 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → (𝑋 + 𝑌) ∈ Constr) |
| 44 | 25, 43 | pm2.61dane 3043 | 1 ⊢ (𝜑 → (𝑋 + 𝑌) ∈ Constr) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2145 ≠ wne 2956 (class class class)co 7412 ℂcc 11179 ℝcr 11180 0cc0 11181 + caddc 11184 · cmul 11186 − cmin 11522 2c2 12378 ℕ0cn0 12587 abscabs 15381 Constrcconstr 34343 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-rep 5232 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7740 ax-cnex 11237 ax-resscn 11238 ax-1cn 11239 ax-icn 11240 ax-addcl 11241 ax-addrcl 11242 ax-mulcl 11243 ax-mulrcl 11244 ax-mulcom 11245 ax-addass 11246 ax-mulass 11247 ax-distr 11248 ax-i2m1 11249 ax-1ne0 11250 ax-1rid 11251 ax-rnegex 11252 ax-rrecex 11253 ax-cnre 11254 ax-pre-lttri 11255 ax-pre-lttrn 11256 ax-pre-ltadd 11257 ax-pre-mulgt0 11258 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-tp 4589 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6297 df-ord 6358 df-on 6359 df-lim 6360 df-suc 6361 df-iota 6487 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7867 df-2nd 7991 df-frecs 8283 df-wrecs 8314 df-recs 8363 df-rdg 8402 df-1o 8460 df-2o 8461 df-er 8701 df-en 8958 df-dom 8959 df-sdom 8960 df-fin 8961 df-pnf 11326 df-mnf 11327 df-xr 11328 df-ltxr 11329 df-le 11330 df-sub 11524 df-neg 11525 df-nn 12317 df-2 12386 df-n0 12588 df-z 12675 df-constr 34344 |
| This theorem is used by: constrremulcl 34381 constrimcl 34384 constrmulcl 34385 constrreinvcl 34386 constrsdrg 34389 constrresqrtcl 34391 constrsqrtcl 34393 cos9thpinconstr 34405 |
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