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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 12315 | . . 3 ⊢ 2 ∈ ℂ | |
| 2 | 1 | sqvali 14198 | . 2 ⊢ (2↑2) = (2 · 2) |
| 3 | 2t2e4 12404 | . 2 ⊢ (2 · 2) = 4 | |
| 4 | 2, 3 | eqtri 2758 | 1 ⊢ (2↑2) = 4 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1540 (class class class)co 7405 · cmul 11134 2c2 12295 4c4 12297 ↑cexp 14079 |
| 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 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2707 ax-sep 5266 ax-nul 5276 ax-pow 5335 ax-pr 5402 ax-un 7729 ax-cnex 11185 ax-resscn 11186 ax-1cn 11187 ax-icn 11188 ax-addcl 11189 ax-addrcl 11190 ax-mulcl 11191 ax-mulrcl 11192 ax-mulcom 11193 ax-addass 11194 ax-mulass 11195 ax-distr 11196 ax-i2m1 11197 ax-1ne0 11198 ax-1rid 11199 ax-rnegex 11200 ax-rrecex 11201 ax-cnre 11202 ax-pre-lttri 11203 ax-pre-lttrn 11204 ax-pre-ltadd 11205 ax-pre-mulgt0 11206 |
| 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 2065 df-mo 2539 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2809 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3061 df-reu 3360 df-rab 3416 df-v 3461 df-sbc 3766 df-csb 3875 df-dif 3929 df-un 3931 df-in 3933 df-ss 3943 df-pss 3946 df-nul 4309 df-if 4501 df-pw 4577 df-sn 4602 df-pr 4604 df-op 4608 df-uni 4884 df-iun 4969 df-br 5120 df-opab 5182 df-mpt 5202 df-tr 5230 df-id 5548 df-eprel 5553 df-po 5561 df-so 5562 df-fr 5606 df-we 5608 df-xp 5660 df-rel 5661 df-cnv 5662 df-co 5663 df-dm 5664 df-rn 5665 df-res 5666 df-ima 5667 df-pred 6290 df-ord 6355 df-on 6356 df-lim 6357 df-suc 6358 df-iota 6484 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 df-riota 7362 df-ov 7408 df-oprab 7409 df-mpo 7410 df-om 7862 df-2nd 7989 df-frecs 8280 df-wrecs 8311 df-recs 8385 df-rdg 8424 df-er 8719 df-en 8960 df-dom 8961 df-sdom 8962 df-pnf 11271 df-mnf 11272 df-xr 11273 df-ltxr 11274 df-le 11275 df-sub 11468 df-neg 11469 df-nn 12241 df-2 12303 df-3 12304 df-4 12305 df-n0 12502 df-z 12589 df-uz 12853 df-seq 14020 df-exp 14080 |
| This theorem is referenced by: sq4e2t8 14217 cu2 14218 sqoddm1div8 14261 faclbnd2 14309 sqrt4 15291 amgm2 15388 ef01bndlem 16202 cos2bnd 16206 pythagtriplem1 16836 4sqlem12 16976 2exp4 17104 2exp5 17105 efmnd2hash 18872 lt6abl 19876 csbren 25351 minveclem2 25378 sincos6thpi 26477 heron 26800 quad2 26801 dcubic2 26806 mcubic 26809 dquartlem2 26814 dquart 26815 quart1 26818 quartlem1 26819 chtublem 27174 chtub 27175 bclbnd 27243 bposlem6 27252 bposlem8 27254 addsqnreup 27406 addsq2nreurex 27407 chebbnd1lem3 27434 chebbnd1 27435 ipidsq 30691 minvecolem2 30856 normpar2i 31137 iconstr 33800 constrresqrtcl 33811 cos9thpiminplylem1 33816 sqsscirc1 33939 lcmineqlem21 42062 aks4d1p1p7 42087 aks4d1p1p5 42088 flt4lem5e 42679 wallispi2lem1 46100 stirlinglem3 46105 stirlinglem10 46112 fmtno1 47555 fmtno2 47564 fmtnofac1 47584 m2prm 47605 lighneallem2 47620 lighneallem4a 47622 exple2lt6 48339 ackval3 48663 ackval42 48676 ackval42a 48677 itsclc0yqsollem1 48742 itscnhlinecirc02plem1 48762 |
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