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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 12421 | . . 3 ⊢ 2 ∈ ℂ | |
| 2 | 1 | sqvali 14326 | . 2 ⊢ (2↑2) = (2 · 2) |
| 3 | 2t2e4 12509 | . 2 ⊢ (2 · 2) = 4 | |
| 4 | 2, 3 | eqtri 2783 | 1 ⊢ (2↑2) = 4 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1569 (class class class)co 7420 · cmul 11208 2c2 12400 4c4 12402 ↑cexp 14207 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 ax-cnex 11259 ax-resscn 11260 ax-1cn 11261 ax-icn 11262 ax-addcl 11263 ax-addrcl 11264 ax-mulcl 11265 ax-mulrcl 11266 ax-mulcom 11267 ax-addass 11268 ax-mulass 11269 ax-distr 11270 ax-i2m1 11271 ax-1ne0 11272 ax-1rid 11273 ax-rnegex 11274 ax-rrecex 11275 ax-cnre 11276 ax-pre-lttri 11277 ax-pre-lttrn 11278 ax-pre-ltadd 11279 ax-pre-mulgt0 11280 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-pss 4014 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7377 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7878 df-2nd 8002 df-frecs 8302 df-wrecs 8333 df-recs 8382 df-rdg 8421 df-er 8720 df-en 8977 df-dom 8978 df-sdom 8979 df-pnf 11348 df-mnf 11349 df-xr 11350 df-ltxr 11351 df-le 11352 df-sub 11546 df-neg 11547 df-nn 12339 df-2 12408 df-3 12409 df-4 12410 df-n0 12610 df-z 12697 df-uz 12969 df-seq 14148 df-exp 14208 |
| This theorem is used by: sq4e2t8 14345 cu2 14346 sqoddm1div8 14390 faclbnd2 14438 sqrt4 15444 amgm2 15542 ef01bndlem 16357 cos2bnd 16361 pythagtriplem1 16999 4sqlem12 17139 2exp4 17267 2exp5 17268 efmnd2hash 19095 lt6abl 20114 csbren 25725 minveclem2 25752 sincos6thpi 26849 heron 27171 quad2 27172 dcubic2 27177 mcubic 27180 dquartlem2 27185 dquart 27186 quart1 27189 quartlem1 27190 chtublem 27543 chtub 27544 bclbnd 27612 bposlem6 27621 bposlem8 27623 addsqnreup 27775 addsq2nreurex 27776 chebbnd1lem3 27803 chebbnd1 27804 fltoprmlem2 27999 ipidsq 31317 minvecolem2 31482 normpar2i 31763 iconstr 34444 constrresqrtcl 34455 cos9thpiminplylem1 34460 sqsscirc1 34586 lcmineqlem21 43192 aks4d1p1p7 43217 aks4d1p1p5 43218 wallispi2lem1 47174 stirlinglem3 47179 stirlinglem10 47186 fmtno1 48719 fmtno2 48728 fmtnofac1 48748 m2prm 48769 lighneallem2 48784 lighneallem4a 48786 nprmdvdsfacm1lem2 48799 exple2lt6 49569 ackval3 49888 ackval42 49901 ackval42a 49902 itsclc0yqsollem1 49967 itscnhlinecirc02plem1 49987 |
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