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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 12399 | . . 3 ⊢ 2 ∈ ℂ | |
| 2 | 1 | sqvali 14303 | . 2 ⊢ (2↑2) = (2 · 2) |
| 3 | 2t2e4 12487 | . 2 ⊢ (2 · 2) = 4 | |
| 4 | 2, 3 | eqtri 2784 | 1 ⊢ (2↑2) = 4 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 (class class class)co 7412 · cmul 11186 2c2 12378 4c4 12380 ↑cexp 14184 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7740 ax-cnex 11237 ax-resscn 11238 ax-1cn 11239 ax-icn 11240 ax-addcl 11241 ax-addrcl 11242 ax-mulcl 11243 ax-mulrcl 11244 ax-mulcom 11245 ax-addass 11246 ax-mulass 11247 ax-distr 11248 ax-i2m1 11249 ax-1ne0 11250 ax-1rid 11251 ax-rnegex 11252 ax-rrecex 11253 ax-cnre 11254 ax-pre-lttri 11255 ax-pre-lttrn 11256 ax-pre-ltadd 11257 ax-pre-mulgt0 11258 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6297 df-ord 6358 df-on 6359 df-lim 6360 df-suc 6361 df-iota 6487 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7867 df-2nd 7991 df-frecs 8283 df-wrecs 8314 df-recs 8363 df-rdg 8402 df-er 8701 df-en 8958 df-dom 8959 df-sdom 8960 df-pnf 11326 df-mnf 11327 df-xr 11328 df-ltxr 11329 df-le 11330 df-sub 11524 df-neg 11525 df-nn 12317 df-2 12386 df-3 12387 df-4 12388 df-n0 12588 df-z 12675 df-uz 12947 df-seq 14125 df-exp 14185 |
| This theorem is used by: sq4e2t8 14322 cu2 14323 sqoddm1div8 14367 faclbnd2 14415 sqrt4 15419 amgm2 15517 ef01bndlem 16332 cos2bnd 16336 pythagtriplem1 16974 4sqlem12 17114 2exp4 17242 2exp5 17243 efmnd2hash 19070 lt6abl 20089 csbren 25700 minveclem2 25727 sincos6thpi 26826 heron 27148 quad2 27149 dcubic2 27154 mcubic 27157 dquartlem2 27162 dquart 27163 quart1 27166 quartlem1 27167 chtublem 27520 chtub 27521 bclbnd 27589 bposlem6 27598 bposlem8 27600 addsqnreup 27752 addsq2nreurex 27753 chebbnd1lem3 27780 chebbnd1 27781 flt4lem5e 27968 fltoprmlem2 27976 ipidsq 31294 minvecolem2 31459 normpar2i 31740 iconstr 34380 constrresqrtcl 34391 cos9thpiminplylem1 34396 sqsscirc1 34522 lcmineqlem21 43067 aks4d1p1p7 43092 aks4d1p1p5 43093 wallispi2lem1 47025 stirlinglem3 47030 stirlinglem10 47037 fmtno1 48570 fmtno2 48579 fmtnofac1 48599 m2prm 48620 lighneallem2 48635 lighneallem4a 48637 nprmdvdsfacm1lem2 48650 exple2lt6 49420 ackval3 49739 ackval42 49752 ackval42a 49753 itsclc0yqsollem1 49818 itscnhlinecirc02plem1 49838 |
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