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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 12247 | . . 3 ⊢ 2 ∈ ℂ | |
| 2 | 1 | sqvali 14133 | . 2 ⊢ (2↑2) = (2 · 2) |
| 3 | 2t2e4 12331 | . 2 ⊢ (2 · 2) = 4 | |
| 4 | 2, 3 | eqtri 2760 | 1 ⊢ (2↑2) = 4 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 (class class class)co 7360 · cmul 11034 2c2 12227 4c4 12229 ↑cexp 14014 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5231 ax-nul 5241 ax-pow 5302 ax-pr 5370 ax-un 7682 ax-cnex 11085 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 ax-pre-mulgt0 11106 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5519 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5577 df-we 5579 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-pred 6259 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-riota 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-om 7811 df-2nd 7936 df-frecs 8224 df-wrecs 8255 df-recs 8304 df-rdg 8342 df-er 8636 df-en 8887 df-dom 8888 df-sdom 8889 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-nn 12166 df-2 12235 df-3 12236 df-4 12237 df-n0 12429 df-z 12516 df-uz 12780 df-seq 13955 df-exp 14015 |
| This theorem is referenced by: sq4e2t8 14152 cu2 14153 sqoddm1div8 14196 faclbnd2 14244 sqrt4 15225 amgm2 15323 ef01bndlem 16142 cos2bnd 16146 pythagtriplem1 16778 4sqlem12 16918 2exp4 17046 2exp5 17047 efmnd2hash 18853 lt6abl 19861 csbren 25376 minveclem2 25403 sincos6thpi 26493 heron 26815 quad2 26816 dcubic2 26821 mcubic 26824 dquartlem2 26829 dquart 26830 quart1 26833 quartlem1 26834 chtublem 27188 chtub 27189 bclbnd 27257 bposlem6 27266 bposlem8 27268 addsqnreup 27420 addsq2nreurex 27421 chebbnd1lem3 27448 chebbnd1 27449 ipidsq 30796 minvecolem2 30961 normpar2i 31242 iconstr 33926 constrresqrtcl 33937 cos9thpiminplylem1 33942 sqsscirc1 34068 lcmineqlem21 42502 aks4d1p1p7 42527 aks4d1p1p5 42528 flt4lem5e 43103 wallispi2lem1 46517 stirlinglem3 46522 stirlinglem10 46529 fmtno1 48016 fmtno2 48025 fmtnofac1 48045 m2prm 48066 lighneallem2 48081 lighneallem4a 48083 nprmdvdsfacm1lem2 48096 exple2lt6 48852 ackval3 49171 ackval42 49184 ackval42a 49185 itsclc0yqsollem1 49250 itscnhlinecirc02plem1 49270 |
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