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Mirrors > Home > MPE Home > Th. List > sqval | Structured version Visualization version GIF version |
Description: Value of the square of a complex number. (Contributed by Raph Levien, 10-Apr-2004.) |
Ref | Expression |
---|---|
sqval | ⊢ (𝐴 ∈ ℂ → (𝐴↑2) = (𝐴 · 𝐴)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-2 11751 | . . . 4 ⊢ 2 = (1 + 1) | |
2 | 1 | oveq2i 7168 | . . 3 ⊢ (𝐴↑2) = (𝐴↑(1 + 1)) |
3 | 1nn0 11964 | . . . 4 ⊢ 1 ∈ ℕ0 | |
4 | expp1 13500 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 1 ∈ ℕ0) → (𝐴↑(1 + 1)) = ((𝐴↑1) · 𝐴)) | |
5 | 3, 4 | mpan2 690 | . . 3 ⊢ (𝐴 ∈ ℂ → (𝐴↑(1 + 1)) = ((𝐴↑1) · 𝐴)) |
6 | 2, 5 | syl5eq 2806 | . 2 ⊢ (𝐴 ∈ ℂ → (𝐴↑2) = ((𝐴↑1) · 𝐴)) |
7 | exp1 13499 | . . 3 ⊢ (𝐴 ∈ ℂ → (𝐴↑1) = 𝐴) | |
8 | 7 | oveq1d 7172 | . 2 ⊢ (𝐴 ∈ ℂ → ((𝐴↑1) · 𝐴) = (𝐴 · 𝐴)) |
9 | 6, 8 | eqtrd 2794 | 1 ⊢ (𝐴 ∈ ℂ → (𝐴↑2) = (𝐴 · 𝐴)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1539 ∈ wcel 2112 (class class class)co 7157 ℂcc 10587 1c1 10590 + caddc 10592 · cmul 10594 2c2 11743 ℕ0cn0 11948 ↑cexp 13493 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1912 ax-6 1971 ax-7 2016 ax-8 2114 ax-9 2122 ax-10 2143 ax-11 2159 ax-12 2176 ax-ext 2730 ax-sep 5174 ax-nul 5181 ax-pow 5239 ax-pr 5303 ax-un 7466 ax-cnex 10645 ax-resscn 10646 ax-1cn 10647 ax-icn 10648 ax-addcl 10649 ax-addrcl 10650 ax-mulcl 10651 ax-mulrcl 10652 ax-mulcom 10653 ax-addass 10654 ax-mulass 10655 ax-distr 10656 ax-i2m1 10657 ax-1ne0 10658 ax-1rid 10659 ax-rnegex 10660 ax-rrecex 10661 ax-cnre 10662 ax-pre-lttri 10663 ax-pre-lttrn 10664 ax-pre-ltadd 10665 ax-pre-mulgt0 10666 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2071 df-mo 2558 df-eu 2589 df-clab 2737 df-cleq 2751 df-clel 2831 df-nfc 2902 df-ne 2953 df-nel 3057 df-ral 3076 df-rex 3077 df-reu 3078 df-rab 3080 df-v 3412 df-sbc 3700 df-csb 3809 df-dif 3864 df-un 3866 df-in 3868 df-ss 3878 df-pss 3880 df-nul 4229 df-if 4425 df-pw 4500 df-sn 4527 df-pr 4529 df-tp 4531 df-op 4533 df-uni 4803 df-iun 4889 df-br 5038 df-opab 5100 df-mpt 5118 df-tr 5144 df-id 5435 df-eprel 5440 df-po 5448 df-so 5449 df-fr 5488 df-we 5490 df-xp 5535 df-rel 5536 df-cnv 5537 df-co 5538 df-dm 5539 df-rn 5540 df-res 5541 df-ima 5542 df-pred 6132 df-ord 6178 df-on 6179 df-lim 6180 df-suc 6181 df-iota 6300 df-fun 6343 df-fn 6344 df-f 6345 df-f1 6346 df-fo 6347 df-f1o 6348 df-fv 6349 df-riota 7115 df-ov 7160 df-oprab 7161 df-mpo 7162 df-om 7587 df-2nd 7701 df-wrecs 7964 df-recs 8025 df-rdg 8063 df-er 8306 df-en 8542 df-dom 8543 df-sdom 8544 df-pnf 10729 df-mnf 10730 df-xr 10731 df-ltxr 10732 df-le 10733 df-sub 10924 df-neg 10925 df-nn 11689 df-2 11751 df-n0 11949 df-z 12035 df-uz 12297 df-seq 13433 df-exp 13494 |
This theorem is referenced by: sqneg 13546 sqcl 13548 sqdiv 13551 sqdivid 13552 sqgt0 13555 nnsqcl 13557 qsqcl 13559 sq11 13560 lt2sq 13562 le2sq 13563 sqge0 13565 sqvald 13571 sqvali 13607 nnlesq 13632 sqlecan 13635 subsq 13636 subsq2 13637 binom3 13649 sq01 13650 zesq 13651 discr1 13664 discr 13665 sqrlem2 14665 sqreulem 14781 arisum 15277 3lexlogpow2ineq2 39662 itgsinexplem1 43008 |
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