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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 484 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 = 𝑌) → 𝑋 = 𝑌) | |
| 2 | 1 | oveq2d 7374 | . . 3 ⊢ ((𝜑 ∧ 𝑋 = 𝑌) → (𝑋 + 𝑋) = (𝑋 + 𝑌)) |
| 3 | 0nn0 12416 | . . . . . . 7 ⊢ 0 ∈ ℕ0 | |
| 4 | 3 | a1i 11 | . . . . . 6 ⊢ (𝜑 → 0 ∈ ℕ0) |
| 5 | 4 | nn0constr 33918 | . . . . 5 ⊢ (𝜑 → 0 ∈ Constr) |
| 6 | constraddcl.1 | . . . . 5 ⊢ (𝜑 → 𝑋 ∈ Constr) | |
| 7 | 2re 12219 | . . . . . 6 ⊢ 2 ∈ ℝ | |
| 8 | 7 | a1i 11 | . . . . 5 ⊢ (𝜑 → 2 ∈ ℝ) |
| 9 | 6 | constrcn 33917 | . . . . . 6 ⊢ (𝜑 → 𝑋 ∈ ℂ) |
| 10 | 9, 9 | addcld 11151 | . . . . 5 ⊢ (𝜑 → (𝑋 + 𝑋) ∈ ℂ) |
| 11 | 2cnd 12223 | . . . . . . . 8 ⊢ (𝜑 → 2 ∈ ℂ) | |
| 12 | 0cnd 11125 | . . . . . . . . 9 ⊢ (𝜑 → 0 ∈ ℂ) | |
| 13 | 9, 12 | subcld 11492 | . . . . . . . 8 ⊢ (𝜑 → (𝑋 − 0) ∈ ℂ) |
| 14 | 11, 13 | mulcld 11152 | . . . . . . 7 ⊢ (𝜑 → (2 · (𝑋 − 0)) ∈ ℂ) |
| 15 | 14 | addlidd 11334 | . . . . . 6 ⊢ (𝜑 → (0 + (2 · (𝑋 − 0))) = (2 · (𝑋 − 0))) |
| 16 | 9 | subid1d 11481 | . . . . . . 7 ⊢ (𝜑 → (𝑋 − 0) = 𝑋) |
| 17 | 16 | oveq2d 7374 | . . . . . 6 ⊢ (𝜑 → (2 · (𝑋 − 0)) = (2 · 𝑋)) |
| 18 | 9 | 2timesd 12384 | . . . . . 6 ⊢ (𝜑 → (2 · 𝑋) = (𝑋 + 𝑋)) |
| 19 | 15, 17, 18 | 3eqtrrd 2776 | . . . . 5 ⊢ (𝜑 → (𝑋 + 𝑋) = (0 + (2 · (𝑋 − 0)))) |
| 20 | 9, 9 | pncand 11493 | . . . . . . 7 ⊢ (𝜑 → ((𝑋 + 𝑋) − 𝑋) = 𝑋) |
| 21 | 20, 16 | eqtr4d 2774 | . . . . . 6 ⊢ (𝜑 → ((𝑋 + 𝑋) − 𝑋) = (𝑋 − 0)) |
| 22 | 21 | fveq2d 6838 | . . . . 5 ⊢ (𝜑 → (abs‘((𝑋 + 𝑋) − 𝑋)) = (abs‘(𝑋 − 0))) |
| 23 | 5, 6, 6, 6, 5, 8, 10, 19, 22 | constrlccl 33914 | . . . 4 ⊢ (𝜑 → (𝑋 + 𝑋) ∈ Constr) |
| 24 | 23 | adantr 480 | . . 3 ⊢ ((𝜑 ∧ 𝑋 = 𝑌) → (𝑋 + 𝑋) ∈ Constr) |
| 25 | 2, 24 | eqeltrrd 2837 | . 2 ⊢ ((𝜑 ∧ 𝑋 = 𝑌) → (𝑋 + 𝑌) ∈ Constr) |
| 26 | 6 | adantr 480 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → 𝑋 ∈ Constr) |
| 27 | constraddcl.2 | . . . 4 ⊢ (𝜑 → 𝑌 ∈ Constr) | |
| 28 | 27 | adantr 480 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → 𝑌 ∈ Constr) |
| 29 | 5 | adantr 480 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → 0 ∈ Constr) |
| 30 | 9 | adantr 480 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → 𝑋 ∈ ℂ) |
| 31 | 27 | constrcn 33917 | . . . . 5 ⊢ (𝜑 → 𝑌 ∈ ℂ) |
| 32 | 31 | adantr 480 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → 𝑌 ∈ ℂ) |
| 33 | 30, 32 | addcld 11151 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → (𝑋 + 𝑌) ∈ ℂ) |
| 34 | simpr 484 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → 𝑋 ≠ 𝑌) | |
| 35 | 30, 32 | pncan2d 11494 | . . . . 5 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → ((𝑋 + 𝑌) − 𝑋) = 𝑌) |
| 36 | 32 | subid1d 11481 | . . . . 5 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → (𝑌 − 0) = 𝑌) |
| 37 | 35, 36 | eqtr4d 2774 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → ((𝑋 + 𝑌) − 𝑋) = (𝑌 − 0)) |
| 38 | 37 | fveq2d 6838 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → (abs‘((𝑋 + 𝑌) − 𝑋)) = (abs‘(𝑌 − 0))) |
| 39 | 30, 32 | pncand 11493 | . . . . 5 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → ((𝑋 + 𝑌) − 𝑌) = 𝑋) |
| 40 | 30 | subid1d 11481 | . . . . 5 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → (𝑋 − 0) = 𝑋) |
| 41 | 39, 40 | eqtr4d 2774 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → ((𝑋 + 𝑌) − 𝑌) = (𝑋 − 0)) |
| 42 | 41 | fveq2d 6838 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → (abs‘((𝑋 + 𝑌) − 𝑌)) = (abs‘(𝑋 − 0))) |
| 43 | 26, 28, 29, 28, 26, 29, 33, 34, 38, 42 | constrcccl 33915 | . 2 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → (𝑋 + 𝑌) ∈ Constr) |
| 44 | 25, 43 | pm2.61dane 3019 | 1 ⊢ (𝜑 → (𝑋 + 𝑌) ∈ Constr) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1541 ∈ wcel 2113 ≠ wne 2932 (class class class)co 7358 ℂcc 11024 ℝcr 11025 0cc0 11026 + caddc 11029 · cmul 11031 − cmin 11364 2c2 12200 ℕ0cn0 12401 abscabs 15157 Constrcconstr 33886 |
| 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 2184 ax-ext 2708 ax-rep 5224 ax-sep 5241 ax-nul 5251 ax-pow 5310 ax-pr 5377 ax-un 7680 ax-cnex 11082 ax-resscn 11083 ax-1cn 11084 ax-icn 11085 ax-addcl 11086 ax-addrcl 11087 ax-mulcl 11088 ax-mulrcl 11089 ax-mulcom 11090 ax-addass 11091 ax-mulass 11092 ax-distr 11093 ax-i2m1 11094 ax-1ne0 11095 ax-1rid 11096 ax-rnegex 11097 ax-rrecex 11098 ax-cnre 11099 ax-pre-lttri 11100 ax-pre-lttrn 11101 ax-pre-ltadd 11102 ax-pre-mulgt0 11103 |
| 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 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3061 df-reu 3351 df-rab 3400 df-v 3442 df-sbc 3741 df-csb 3850 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-pss 3921 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-tp 4585 df-op 4587 df-uni 4864 df-iun 4948 df-br 5099 df-opab 5161 df-mpt 5180 df-tr 5206 df-id 5519 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5577 df-we 5579 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-pred 6259 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-riota 7315 df-ov 7361 df-oprab 7362 df-mpo 7363 df-om 7809 df-2nd 7934 df-frecs 8223 df-wrecs 8254 df-recs 8303 df-rdg 8341 df-1o 8397 df-2o 8398 df-er 8635 df-en 8884 df-dom 8885 df-sdom 8886 df-fin 8887 df-pnf 11168 df-mnf 11169 df-xr 11170 df-ltxr 11171 df-le 11172 df-sub 11366 df-neg 11367 df-nn 12146 df-2 12208 df-n0 12402 df-z 12489 df-constr 33887 |
| This theorem is referenced by: constrremulcl 33924 constrimcl 33927 constrmulcl 33928 constrreinvcl 33929 constrsdrg 33932 constrresqrtcl 33934 constrsqrtcl 33936 cos9thpinconstr 33948 |
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