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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 7433 | . . 3 ⊢ ((𝜑 ∧ 𝑋 = 𝑌) → (𝑋 + 𝑋) = (𝑋 + 𝑌)) |
| 3 | 0nn0 12547 | . . . . . . 7 ⊢ 0 ∈ ℕ0 | |
| 4 | 3 | a1i 11 | . . . . . 6 ⊢ (𝜑 → 0 ∈ ℕ0) |
| 5 | 4 | nn0constr 34279 | . . . . 5 ⊢ (𝜑 → 0 ∈ Constr) |
| 6 | constraddcl.1 | . . . . 5 ⊢ (𝜑 → 𝑋 ∈ Constr) | |
| 7 | 2re 12343 | . . . . . 6 ⊢ 2 ∈ ℝ | |
| 8 | 7 | a1i 11 | . . . . 5 ⊢ (𝜑 → 2 ∈ ℝ) |
| 9 | 6 | constrcn 34278 | . . . . . 6 ⊢ (𝜑 → 𝑋 ∈ ℂ) |
| 10 | 9, 9 | addcld 11256 | . . . . 5 ⊢ (𝜑 → (𝑋 + 𝑋) ∈ ℂ) |
| 11 | 2cnd 12347 | . . . . . . . 8 ⊢ (𝜑 → 2 ∈ ℂ) | |
| 12 | 0cnd 11227 | . . . . . . . . 9 ⊢ (𝜑 → 0 ∈ ℂ) | |
| 13 | 9, 12 | subcld 11597 | . . . . . . . 8 ⊢ (𝜑 → (𝑋 − 0) ∈ ℂ) |
| 14 | 11, 13 | mulcld 11257 | . . . . . . 7 ⊢ (𝜑 → (2 · (𝑋 − 0)) ∈ ℂ) |
| 15 | 14 | addlidd 11439 | . . . . . 6 ⊢ (𝜑 → (0 + (2 · (𝑋 − 0))) = (2 · (𝑋 − 0))) |
| 16 | 9 | subid1d 11586 | . . . . . . 7 ⊢ (𝜑 → (𝑋 − 0) = 𝑋) |
| 17 | 16 | oveq2d 7433 | . . . . . 6 ⊢ (𝜑 → (2 · (𝑋 − 0)) = (2 · 𝑋)) |
| 18 | 9 | 2timesd 12515 | . . . . . 6 ⊢ (𝜑 → (2 · 𝑋) = (𝑋 + 𝑋)) |
| 19 | 15, 17, 18 | 3eqtrrd 2802 | . . . . 5 ⊢ (𝜑 → (𝑋 + 𝑋) = (0 + (2 · (𝑋 − 0)))) |
| 20 | 9, 9 | pncand 11598 | . . . . . . 7 ⊢ (𝜑 → ((𝑋 + 𝑋) − 𝑋) = 𝑋) |
| 21 | 20, 16 | eqtr4d 2800 | . . . . . 6 ⊢ (𝜑 → ((𝑋 + 𝑋) − 𝑋) = (𝑋 − 0)) |
| 22 | 21 | fveq2d 6886 | . . . . 5 ⊢ (𝜑 → (abs‘((𝑋 + 𝑋) − 𝑋)) = (abs‘(𝑋 − 0))) |
| 23 | 5, 6, 6, 6, 5, 8, 10, 19, 22 | constrlccl 34275 | . . . 4 ⊢ (𝜑 → (𝑋 + 𝑋) ∈ Constr) |
| 24 | 23 | adantr 486 | . . 3 ⊢ ((𝜑 ∧ 𝑋 = 𝑌) → (𝑋 + 𝑋) ∈ Constr) |
| 25 | 2, 24 | eqeltrrd 2863 | . 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 34278 | . . . . 5 ⊢ (𝜑 → 𝑌 ∈ ℂ) |
| 32 | 31 | adantr 486 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → 𝑌 ∈ ℂ) |
| 33 | 30, 32 | addcld 11256 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → (𝑋 + 𝑌) ∈ ℂ) |
| 34 | simpr 490 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → 𝑋 ≠ 𝑌) | |
| 35 | 30, 32 | pncan2d 11599 | . . . . 5 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → ((𝑋 + 𝑌) − 𝑋) = 𝑌) |
| 36 | 32 | subid1d 11586 | . . . . 5 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → (𝑌 − 0) = 𝑌) |
| 37 | 35, 36 | eqtr4d 2800 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → ((𝑋 + 𝑌) − 𝑋) = (𝑌 − 0)) |
| 38 | 37 | fveq2d 6886 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → (abs‘((𝑋 + 𝑌) − 𝑋)) = (abs‘(𝑌 − 0))) |
| 39 | 30, 32 | pncand 11598 | . . . . 5 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → ((𝑋 + 𝑌) − 𝑌) = 𝑋) |
| 40 | 30 | subid1d 11586 | . . . . 5 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → (𝑋 − 0) = 𝑋) |
| 41 | 39, 40 | eqtr4d 2800 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → ((𝑋 + 𝑌) − 𝑌) = (𝑋 − 0)) |
| 42 | 41 | fveq2d 6886 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → (abs‘((𝑋 + 𝑌) − 𝑌)) = (abs‘(𝑋 − 0))) |
| 43 | 26, 28, 29, 28, 26, 29, 33, 34, 38, 42 | constrcccl 34276 | . 2 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → (𝑋 + 𝑌) ∈ Constr) |
| 44 | 25, 43 | pm2.61dane 3044 | 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 2957 (class class class)co 7417 ℂcc 11126 ℝcr 11127 0cc0 11128 + caddc 11131 · cmul 11133 − cmin 11469 2c2 12323 ℕ0cn0 12532 abscabs 15325 Constrcconstr 34247 |
| 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 2215 ax-ext 2734 ax-rep 5236 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 ax-un 7740 ax-cnex 11184 ax-resscn 11185 ax-1cn 11186 ax-icn 11187 ax-addcl 11188 ax-addrcl 11189 ax-mulcl 11190 ax-mulrcl 11191 ax-mulcom 11192 ax-addass 11193 ax-mulass 11194 ax-distr 11195 ax-i2m1 11196 ax-1ne0 11197 ax-1rid 11198 ax-rnegex 11199 ax-rrecex 11200 ax-cnre 11201 ax-pre-lttri 11202 ax-pre-lttrn 11203 ax-pre-ltadd 11204 ax-pre-mulgt0 11205 |
| 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 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-reu 3368 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-tp 4592 df-op 4594 df-uni 4871 df-iun 4956 df-br 5108 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5554 df-eprel 5559 df-po 5567 df-so 5568 df-fr 5612 df-we 5614 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7374 df-ov 7420 df-oprab 7421 df-mpo 7422 df-om 7867 df-2nd 7991 df-frecs 8284 df-wrecs 8315 df-recs 8364 df-rdg 8403 df-1o 8459 df-2o 8460 df-er 8700 df-en 8957 df-dom 8958 df-sdom 8959 df-fin 8960 df-pnf 11273 df-mnf 11274 df-xr 11275 df-ltxr 11276 df-le 11277 df-sub 11471 df-neg 11472 df-nn 12262 df-2 12331 df-n0 12533 df-z 12620 df-constr 34248 |
| This theorem is used by: constrremulcl 34285 constrimcl 34288 constrmulcl 34289 constrreinvcl 34290 constrsdrg 34293 constrresqrtcl 34295 constrsqrtcl 34297 cos9thpinconstr 34309 |
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