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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 12307 | . . 3 ⊢ 2 ∈ ℂ | |
| 2 | 1 | sqvali 14207 | . 2 ⊢ (2↑2) = (2 · 2) |
| 3 | 2t2e4 12395 | . 2 ⊢ (2 · 2) = 4 | |
| 4 | 2, 3 | eqtri 2788 | 1 ⊢ (2↑2) = 4 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1563 (class class class)co 7400 · cmul 11093 2c2 12286 4c4 12288 ↑cexp 14088 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2737 ax-sep 5251 ax-nul 5261 ax-pow 5327 ax-pr 5395 ax-un 7722 ax-cnex 11144 ax-resscn 11145 ax-1cn 11146 ax-icn 11147 ax-addcl 11148 ax-addrcl 11149 ax-mulcl 11150 ax-mulrcl 11151 ax-mulcom 11152 ax-addass 11153 ax-mulass 11154 ax-distr 11155 ax-i2m1 11156 ax-1ne0 11157 ax-1rid 11158 ax-rnegex 11159 ax-rrecex 11160 ax-cnre 11161 ax-pre-lttri 11162 ax-pre-lttrn 11163 ax-pre-ltadd 11164 ax-pre-mulgt0 11165 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-nf 1807 df-sb 2094 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3065 df-ral 3080 df-rex 3090 df-reu 3371 df-rab 3418 df-v 3459 df-sbc 3748 df-csb 3856 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-pss 3927 df-nul 4289 df-if 4484 df-pw 4560 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4869 df-iun 4954 df-br 5106 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5547 df-eprel 5552 df-po 5560 df-so 5561 df-fr 5605 df-we 5607 df-xp 5658 df-rel 5659 df-cnv 5660 df-co 5661 df-dm 5662 df-rn 5663 df-res 5664 df-ima 5665 df-pred 6292 df-ord 6353 df-on 6354 df-lim 6355 df-suc 6356 df-iota 6481 df-fun 6527 df-fn 6528 df-f 6529 df-f1 6530 df-fo 6531 df-f1o 6532 df-fv 6533 df-riota 7357 df-ov 7403 df-oprab 7404 df-mpo 7405 df-om 7851 df-2nd 7975 df-frecs 8266 df-wrecs 8297 df-recs 8346 df-rdg 8385 df-er 8682 df-en 8932 df-dom 8933 df-sdom 8934 df-pnf 11233 df-mnf 11234 df-xr 11235 df-ltxr 11236 df-le 11237 df-sub 11431 df-neg 11432 df-nn 12225 df-2 12294 df-3 12295 df-4 12296 df-n0 12496 df-z 12583 df-uz 12854 df-seq 14029 df-exp 14089 |
| This theorem is referenced by: sq4e2t8 14226 cu2 14227 sqoddm1div8 14270 faclbnd2 14318 sqrt4 15313 amgm2 15411 ef01bndlem 16230 cos2bnd 16234 pythagtriplem1 16866 4sqlem12 17006 2exp4 17134 2exp5 17135 efmnd2hash 18943 lt6abl 19956 csbren 25519 minveclem2 25546 sincos6thpi 26639 heron 26961 quad2 26962 dcubic2 26967 mcubic 26970 dquartlem2 26975 dquart 26976 quart1 26979 quartlem1 26980 chtublem 27333 chtub 27334 bclbnd 27402 bposlem6 27411 bposlem8 27413 addsqnreup 27565 addsq2nreurex 27566 chebbnd1lem3 27593 chebbnd1 27594 ipidsq 30971 minvecolem2 31136 normpar2i 31417 iconstr 34073 constrresqrtcl 34084 cos9thpiminplylem1 34089 sqsscirc1 34215 lcmineqlem21 42678 aks4d1p1p7 42703 aks4d1p1p5 42704 flt4lem5e 43250 wallispi2lem1 46643 stirlinglem3 46648 stirlinglem10 46655 fmtno1 48148 fmtno2 48157 fmtnofac1 48177 m2prm 48198 lighneallem2 48213 lighneallem4a 48215 nprmdvdsfacm1lem2 48228 exple2lt6 48995 ackval3 49314 ackval42 49327 ackval42a 49328 itsclc0yqsollem1 49393 itscnhlinecirc02plem1 49413 |
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