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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 12448 | . . 3 ⊢ 2 ∈ ℂ | |
| 2 | 1 | sqvali 14353 | . 2 ⊢ (2↑2) = (2 · 2) |
| 3 | 2t2e4 12536 | . 2 ⊢ (2 · 2) = 4 | |
| 4 | 2, 3 | eqtri 2786 | 1 ⊢ (2↑2) = 4 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 (class class class)co 7446 · cmul 11235 2c2 12427 4c4 12429 ↑cexp 14234 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5253 ax-nul 5264 ax-pow 5332 ax-pr 5396 ax-un 7778 ax-cnex 11286 ax-resscn 11287 ax-1cn 11288 ax-icn 11289 ax-addcl 11290 ax-addrcl 11291 ax-mulcl 11292 ax-mulrcl 11293 ax-mulcom 11294 ax-addass 11295 ax-mulass 11296 ax-distr 11297 ax-i2m1 11298 ax-1ne0 11299 ax-1rid 11300 ax-rnegex 11301 ax-rrecex 11302 ax-cnre 11303 ax-pre-lttri 11304 ax-pre-lttrn 11305 ax-pre-ltadd 11306 ax-pre-mulgt0 11307 |
| 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 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-iun 4956 df-br 5107 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5551 df-eprel 5556 df-po 5564 df-so 5565 df-fr 5609 df-we 5611 df-xp 5662 df-rel 5663 df-cnv 5664 df-co 5665 df-dm 5666 df-rn 5667 df-res 5668 df-ima 5669 df-pred 6325 df-ord 6386 df-on 6387 df-lim 6388 df-suc 6389 df-iota 6515 df-fun 6563 df-fn 6564 df-f 6565 df-f1 6566 df-fo 6567 df-f1o 6568 df-fv 6569 df-riota 7403 df-ov 7449 df-oprab 7450 df-mpo 7451 df-om 7905 df-2nd 8029 df-frecs 8330 df-wrecs 8361 df-recs 8410 df-rdg 8449 df-er 8748 df-en 9005 df-dom 9006 df-sdom 9007 df-pnf 11375 df-mnf 11376 df-xr 11377 df-ltxr 11378 df-le 11379 df-sub 11573 df-neg 11574 df-nn 12366 df-2 12435 df-3 12436 df-4 12437 df-n0 12637 df-z 12724 df-uz 12996 df-seq 14175 df-exp 14235 |
| This theorem is used by: sq4e2t8 14372 cu2 14373 sqoddm1div8 14417 faclbnd2 14465 sqrt4 15471 amgm2 15569 ef01bndlem 16384 cos2bnd 16388 pythagtriplem1 17026 4sqlem12 17166 2exp4 17294 2exp5 17295 efmnd2hash 19122 lt6abl 20142 csbren 25753 minveclem2 25780 sincos6thpi 26877 heron 27199 quad2 27200 dcubic2 27205 mcubic 27208 dquartlem2 27213 dquart 27214 quart1 27217 quartlem1 27218 chtublem 27571 chtub 27572 bclbnd 27640 bposlem6 27649 bposlem8 27651 addsqnreup 27803 addsq2nreurex 27804 chebbnd1lem3 27831 chebbnd1 27832 fltoprmlem2 28027 ipidsq 31345 minvecolem2 31510 normpar2i 31791 iconstr 34481 constrresqrtcl 34492 cos9thpiminplylem1 34497 sqsscirc1 34623 lcmineqlem21 43302 aks4d1p1p7 43327 aks4d1p1p5 43328 wallispi2lem1 47296 stirlinglem3 47301 stirlinglem10 47308 fmtno1 48841 fmtno2 48850 fmtnofac1 48870 m2prm 48891 lighneallem2 48906 lighneallem4a 48908 nprmdvdsfacm1lem2 48921 exple2lt6 49691 ackval3 50010 ackval42 50023 ackval42a 50024 itsclc0yqsollem1 50089 itscnhlinecirc02plem1 50109 |
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