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Mirrors > Home > MPE Home > Th. List > atandm4 | Structured version Visualization version GIF version |
Description: A compact form of atandm 26828. (Contributed by Mario Carneiro, 3-Apr-2015.) |
Ref | Expression |
---|---|
atandm4 | ⊢ (𝐴 ∈ dom arctan ↔ (𝐴 ∈ ℂ ∧ (1 + (𝐴↑2)) ≠ 0)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | atandm3 26830 | . 2 ⊢ (𝐴 ∈ dom arctan ↔ (𝐴 ∈ ℂ ∧ (𝐴↑2) ≠ -1)) | |
2 | sqcl 14122 | . . . . . 6 ⊢ (𝐴 ∈ ℂ → (𝐴↑2) ∈ ℂ) | |
3 | neg1cn 12364 | . . . . . 6 ⊢ -1 ∈ ℂ | |
4 | subeq0 11524 | . . . . . 6 ⊢ (((𝐴↑2) ∈ ℂ ∧ -1 ∈ ℂ) → (((𝐴↑2) − -1) = 0 ↔ (𝐴↑2) = -1)) | |
5 | 2, 3, 4 | sylancl 584 | . . . . 5 ⊢ (𝐴 ∈ ℂ → (((𝐴↑2) − -1) = 0 ↔ (𝐴↑2) = -1)) |
6 | ax-1cn 11204 | . . . . . . . 8 ⊢ 1 ∈ ℂ | |
7 | subneg 11547 | . . . . . . . 8 ⊢ (((𝐴↑2) ∈ ℂ ∧ 1 ∈ ℂ) → ((𝐴↑2) − -1) = ((𝐴↑2) + 1)) | |
8 | 2, 6, 7 | sylancl 584 | . . . . . . 7 ⊢ (𝐴 ∈ ℂ → ((𝐴↑2) − -1) = ((𝐴↑2) + 1)) |
9 | addcom 11438 | . . . . . . . 8 ⊢ (((𝐴↑2) ∈ ℂ ∧ 1 ∈ ℂ) → ((𝐴↑2) + 1) = (1 + (𝐴↑2))) | |
10 | 2, 6, 9 | sylancl 584 | . . . . . . 7 ⊢ (𝐴 ∈ ℂ → ((𝐴↑2) + 1) = (1 + (𝐴↑2))) |
11 | 8, 10 | eqtrd 2768 | . . . . . 6 ⊢ (𝐴 ∈ ℂ → ((𝐴↑2) − -1) = (1 + (𝐴↑2))) |
12 | 11 | eqeq1d 2730 | . . . . 5 ⊢ (𝐴 ∈ ℂ → (((𝐴↑2) − -1) = 0 ↔ (1 + (𝐴↑2)) = 0)) |
13 | 5, 12 | bitr3d 280 | . . . 4 ⊢ (𝐴 ∈ ℂ → ((𝐴↑2) = -1 ↔ (1 + (𝐴↑2)) = 0)) |
14 | 13 | necon3bid 2982 | . . 3 ⊢ (𝐴 ∈ ℂ → ((𝐴↑2) ≠ -1 ↔ (1 + (𝐴↑2)) ≠ 0)) |
15 | 14 | pm5.32i 573 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ (𝐴↑2) ≠ -1) ↔ (𝐴 ∈ ℂ ∧ (1 + (𝐴↑2)) ≠ 0)) |
16 | 1, 15 | bitri 274 | 1 ⊢ (𝐴 ∈ dom arctan ↔ (𝐴 ∈ ℂ ∧ (1 + (𝐴↑2)) ≠ 0)) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 205 ∧ wa 394 = wceq 1533 ∈ wcel 2098 ≠ wne 2937 dom cdm 5682 (class class class)co 7426 ℂcc 11144 0cc0 11146 1c1 11147 + caddc 11149 − cmin 11482 -cneg 11483 2c2 12305 ↑cexp 14066 arctancatan 26816 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2166 ax-ext 2699 ax-sep 5303 ax-nul 5310 ax-pow 5369 ax-pr 5433 ax-un 7746 ax-cnex 11202 ax-resscn 11203 ax-1cn 11204 ax-icn 11205 ax-addcl 11206 ax-addrcl 11207 ax-mulcl 11208 ax-mulrcl 11209 ax-mulcom 11210 ax-addass 11211 ax-mulass 11212 ax-distr 11213 ax-i2m1 11214 ax-1ne0 11215 ax-1rid 11216 ax-rnegex 11217 ax-rrecex 11218 ax-cnre 11219 ax-pre-lttri 11220 ax-pre-lttrn 11221 ax-pre-ltadd 11222 ax-pre-mulgt0 11223 |
This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2529 df-eu 2558 df-clab 2706 df-cleq 2720 df-clel 2806 df-nfc 2881 df-ne 2938 df-nel 3044 df-ral 3059 df-rex 3068 df-reu 3375 df-rab 3431 df-v 3475 df-sbc 3779 df-csb 3895 df-dif 3952 df-un 3954 df-in 3956 df-ss 3966 df-pss 3968 df-nul 4327 df-if 4533 df-pw 4608 df-sn 4633 df-pr 4635 df-op 4639 df-uni 4913 df-iun 5002 df-br 5153 df-opab 5215 df-mpt 5236 df-tr 5270 df-id 5580 df-eprel 5586 df-po 5594 df-so 5595 df-fr 5637 df-we 5639 df-xp 5688 df-rel 5689 df-cnv 5690 df-co 5691 df-dm 5692 df-rn 5693 df-res 5694 df-ima 5695 df-pred 6310 df-ord 6377 df-on 6378 df-lim 6379 df-suc 6380 df-iota 6505 df-fun 6555 df-fn 6556 df-f 6557 df-f1 6558 df-fo 6559 df-f1o 6560 df-fv 6561 df-riota 7382 df-ov 7429 df-oprab 7430 df-mpo 7431 df-om 7877 df-2nd 8000 df-frecs 8293 df-wrecs 8324 df-recs 8398 df-rdg 8437 df-er 8731 df-en 8971 df-dom 8972 df-sdom 8973 df-pnf 11288 df-mnf 11289 df-xr 11290 df-ltxr 11291 df-le 11292 df-sub 11484 df-neg 11485 df-nn 12251 df-2 12313 df-n0 12511 df-z 12597 df-uz 12861 df-seq 14007 df-exp 14067 df-atan 26819 |
This theorem is referenced by: efiatan2 26869 cosatan 26873 cosatanne0 26874 atansssdm 26885 dvatan 26887 |
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