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| Mirrors > Home > MPE Home > Th. List > sq2 | Structured version Visualization version GIF version | ||
| Description: The square of 2 is 4. (Contributed by NM, 22-Aug-1999.) |
| Ref | Expression |
|---|---|
| sq2 | ⊢ (2↑2) = 4 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2cn 12268 | . . 3 ⊢ 2 ∈ ℂ | |
| 2 | 1 | sqvali 14152 | . 2 ⊢ (2↑2) = (2 · 2) |
| 3 | 2t2e4 12352 | . 2 ⊢ (2 · 2) = 4 | |
| 4 | 2, 3 | eqtri 2753 | 1 ⊢ (2↑2) = 4 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1540 (class class class)co 7390 · cmul 11080 2c2 12248 4c4 12250 ↑cexp 14033 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2702 ax-sep 5254 ax-nul 5264 ax-pow 5323 ax-pr 5390 ax-un 7714 ax-cnex 11131 ax-resscn 11132 ax-1cn 11133 ax-icn 11134 ax-addcl 11135 ax-addrcl 11136 ax-mulcl 11137 ax-mulrcl 11138 ax-mulcom 11139 ax-addass 11140 ax-mulass 11141 ax-distr 11142 ax-i2m1 11143 ax-1ne0 11144 ax-1rid 11145 ax-rnegex 11146 ax-rrecex 11147 ax-cnre 11148 ax-pre-lttri 11149 ax-pre-lttrn 11150 ax-pre-ltadd 11151 ax-pre-mulgt0 11152 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-nel 3031 df-ral 3046 df-rex 3055 df-reu 3357 df-rab 3409 df-v 3452 df-sbc 3757 df-csb 3866 df-dif 3920 df-un 3922 df-in 3924 df-ss 3934 df-pss 3937 df-nul 4300 df-if 4492 df-pw 4568 df-sn 4593 df-pr 4595 df-op 4599 df-uni 4875 df-iun 4960 df-br 5111 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5536 df-eprel 5541 df-po 5549 df-so 5550 df-fr 5594 df-we 5596 df-xp 5647 df-rel 5648 df-cnv 5649 df-co 5650 df-dm 5651 df-rn 5652 df-res 5653 df-ima 5654 df-pred 6277 df-ord 6338 df-on 6339 df-lim 6340 df-suc 6341 df-iota 6467 df-fun 6516 df-fn 6517 df-f 6518 df-f1 6519 df-fo 6520 df-f1o 6521 df-fv 6522 df-riota 7347 df-ov 7393 df-oprab 7394 df-mpo 7395 df-om 7846 df-2nd 7972 df-frecs 8263 df-wrecs 8294 df-recs 8343 df-rdg 8381 df-er 8674 df-en 8922 df-dom 8923 df-sdom 8924 df-pnf 11217 df-mnf 11218 df-xr 11219 df-ltxr 11220 df-le 11221 df-sub 11414 df-neg 11415 df-nn 12194 df-2 12256 df-3 12257 df-4 12258 df-n0 12450 df-z 12537 df-uz 12801 df-seq 13974 df-exp 14034 |
| This theorem is referenced by: sq4e2t8 14171 cu2 14172 sqoddm1div8 14215 faclbnd2 14263 sqrt4 15245 amgm2 15343 ef01bndlem 16159 cos2bnd 16163 pythagtriplem1 16794 4sqlem12 16934 2exp4 17062 2exp5 17063 efmnd2hash 18828 lt6abl 19832 csbren 25306 minveclem2 25333 sincos6thpi 26432 heron 26755 quad2 26756 dcubic2 26761 mcubic 26764 dquartlem2 26769 dquart 26770 quart1 26773 quartlem1 26774 chtublem 27129 chtub 27130 bclbnd 27198 bposlem6 27207 bposlem8 27209 addsqnreup 27361 addsq2nreurex 27362 chebbnd1lem3 27389 chebbnd1 27390 ipidsq 30646 minvecolem2 30811 normpar2i 31092 iconstr 33763 constrresqrtcl 33774 cos9thpiminplylem1 33779 sqsscirc1 33905 lcmineqlem21 42044 aks4d1p1p7 42069 aks4d1p1p5 42070 flt4lem5e 42651 wallispi2lem1 46076 stirlinglem3 46081 stirlinglem10 46088 fmtno1 47546 fmtno2 47555 fmtnofac1 47575 m2prm 47596 lighneallem2 47611 lighneallem4a 47613 exple2lt6 48356 ackval3 48676 ackval42 48689 ackval42a 48690 itsclc0yqsollem1 48755 itscnhlinecirc02plem1 48775 |
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