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Mirrors > Home > ILE Home > Th. List > exp1 | GIF version |
Description: Value of a complex number raised to the first power. (Contributed by NM, 20-Oct-2004.) (Revised by Mario Carneiro, 2-Jul-2013.) |
Ref | Expression |
---|---|
exp1 | ⊢ (𝐴 ∈ ℂ → (𝐴↑1) = 𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1nn 8117 | . . 3 ⊢ 1 ∈ ℕ | |
2 | expinnval 9576 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 1 ∈ ℕ) → (𝐴↑1) = (seq1( · , (ℕ × {𝐴}), ℂ)‘1)) | |
3 | 1, 2 | mpan2 416 | . 2 ⊢ (𝐴 ∈ ℂ → (𝐴↑1) = (seq1( · , (ℕ × {𝐴}), ℂ)‘1)) |
4 | 1zzd 8459 | . . 3 ⊢ (𝐴 ∈ ℂ → 1 ∈ ℤ) | |
5 | elnnuz 8736 | . . . . 5 ⊢ (𝑥 ∈ ℕ ↔ 𝑥 ∈ (ℤ≥‘1)) | |
6 | fvconst2g 5407 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝑥 ∈ ℕ) → ((ℕ × {𝐴})‘𝑥) = 𝐴) | |
7 | 5, 6 | sylan2br 282 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝑥 ∈ (ℤ≥‘1)) → ((ℕ × {𝐴})‘𝑥) = 𝐴) |
8 | simpl 107 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝑥 ∈ (ℤ≥‘1)) → 𝐴 ∈ ℂ) | |
9 | 7, 8 | eqeltrd 2156 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝑥 ∈ (ℤ≥‘1)) → ((ℕ × {𝐴})‘𝑥) ∈ ℂ) |
10 | mulcl 7162 | . . . 4 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℂ) → (𝑥 · 𝑦) ∈ ℂ) | |
11 | 10 | adantl 271 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ (𝑥 ∈ ℂ ∧ 𝑦 ∈ ℂ)) → (𝑥 · 𝑦) ∈ ℂ) |
12 | 4, 9, 11 | iseq1 9533 | . 2 ⊢ (𝐴 ∈ ℂ → (seq1( · , (ℕ × {𝐴}), ℂ)‘1) = ((ℕ × {𝐴})‘1)) |
13 | fvconst2g 5407 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 1 ∈ ℕ) → ((ℕ × {𝐴})‘1) = 𝐴) | |
14 | 1, 13 | mpan2 416 | . 2 ⊢ (𝐴 ∈ ℂ → ((ℕ × {𝐴})‘1) = 𝐴) |
15 | 3, 12, 14 | 3eqtrd 2118 | 1 ⊢ (𝐴 ∈ ℂ → (𝐴↑1) = 𝐴) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 102 = wceq 1285 ∈ wcel 1434 {csn 3406 × cxp 4369 ‘cfv 4932 (class class class)co 5543 ℂcc 7041 1c1 7044 · cmul 7048 ℕcn 8106 ℤ≥cuz 8700 seqcseq 9521 ↑cexp 9572 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-in1 577 ax-in2 578 ax-io 663 ax-5 1377 ax-7 1378 ax-gen 1379 ax-ie1 1423 ax-ie2 1424 ax-8 1436 ax-10 1437 ax-11 1438 ax-i12 1439 ax-bndl 1440 ax-4 1441 ax-13 1445 ax-14 1446 ax-17 1460 ax-i9 1464 ax-ial 1468 ax-i5r 1469 ax-ext 2064 ax-coll 3901 ax-sep 3904 ax-nul 3912 ax-pow 3956 ax-pr 3972 ax-un 4196 ax-setind 4288 ax-iinf 4337 ax-cnex 7129 ax-resscn 7130 ax-1cn 7131 ax-1re 7132 ax-icn 7133 ax-addcl 7134 ax-addrcl 7135 ax-mulcl 7136 ax-mulrcl 7137 ax-addcom 7138 ax-mulcom 7139 ax-addass 7140 ax-mulass 7141 ax-distr 7142 ax-i2m1 7143 ax-0lt1 7144 ax-1rid 7145 ax-0id 7146 ax-rnegex 7147 ax-precex 7148 ax-cnre 7149 ax-pre-ltirr 7150 ax-pre-ltwlin 7151 ax-pre-lttrn 7152 ax-pre-apti 7153 ax-pre-ltadd 7154 ax-pre-mulgt0 7155 ax-pre-mulext 7156 |
This theorem depends on definitions: df-bi 115 df-dc 777 df-3or 921 df-3an 922 df-tru 1288 df-fal 1291 df-nf 1391 df-sb 1687 df-eu 1945 df-mo 1946 df-clab 2069 df-cleq 2075 df-clel 2078 df-nfc 2209 df-ne 2247 df-nel 2341 df-ral 2354 df-rex 2355 df-reu 2356 df-rmo 2357 df-rab 2358 df-v 2604 df-sbc 2817 df-csb 2910 df-dif 2976 df-un 2978 df-in 2980 df-ss 2987 df-nul 3259 df-if 3360 df-pw 3392 df-sn 3412 df-pr 3413 df-op 3415 df-uni 3610 df-int 3645 df-iun 3688 df-br 3794 df-opab 3848 df-mpt 3849 df-tr 3884 df-id 4056 df-po 4059 df-iso 4060 df-iord 4129 df-on 4131 df-ilim 4132 df-suc 4134 df-iom 4340 df-xp 4377 df-rel 4378 df-cnv 4379 df-co 4380 df-dm 4381 df-rn 4382 df-res 4383 df-ima 4384 df-iota 4897 df-fun 4934 df-fn 4935 df-f 4936 df-f1 4937 df-fo 4938 df-f1o 4939 df-fv 4940 df-riota 5499 df-ov 5546 df-oprab 5547 df-mpt2 5548 df-1st 5798 df-2nd 5799 df-recs 5954 df-frec 6040 df-pnf 7217 df-mnf 7218 df-xr 7219 df-ltxr 7220 df-le 7221 df-sub 7348 df-neg 7349 df-reap 7742 df-ap 7749 df-div 7828 df-inn 8107 df-n0 8356 df-z 8433 df-uz 8701 df-iseq 9522 df-iexp 9573 |
This theorem is referenced by: expp1 9580 expn1ap0 9583 expcllem 9584 expap0 9603 expp1zap 9622 expm1ap 9623 sqval 9631 expnbnd 9693 exp1d 9697 |
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