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| Mirrors > Home > MPE Home > Th. List > 2t2e4 | Structured version Visualization version GIF version | ||
| Description: 2 times 2 equals 4. (Contributed by NM, 1-Aug-1999.) |
| Ref | Expression |
|---|---|
| 2t2e4 | ⊢ (2 · 2) = 4 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2cn 12250 | . . 3 ⊢ 2 ∈ ℂ | |
| 2 | 1 | 2timesi 12308 | . 2 ⊢ (2 · 2) = (2 + 2) |
| 3 | 2p2e4 12305 | . 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 7361 + caddc 11035 · cmul 11037 2c2 12230 4c4 12232 |
| 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-ext 2709 ax-resscn 11089 ax-1cn 11090 ax-icn 11091 ax-addcl 11092 ax-mulcl 11094 ax-mulcom 11096 ax-addass 11097 ax-mulass 11098 ax-distr 11099 ax-1rid 11102 ax-cnre 11105 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-rex 3063 df-rab 3391 df-v 3432 df-dif 3893 df-un 3895 df-ss 3907 df-nul 4275 df-if 4468 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-br 5087 df-iota 6449 df-fv 6501 df-ov 7364 df-2 12238 df-3 12239 df-4 12240 |
| This theorem is referenced by: 4div2e2 12340 div4p1lem1div2 12426 3halfnz 12602 decbin0 12778 fldiv4lem1div2uz2 13789 sq2 14153 sq4e2t8 14155 discr 14196 sqoddm1div8 14199 faclbnd2 14247 4bc2eq6 14285 amgm2 15326 bpoly3 16017 sin4lt0 16156 z4even 16335 flodddiv4 16378 flodddiv4t2lthalf 16381 4nprm 16658 2exp4 17049 2exp16 17055 5prm 17073 631prm 17091 1259lem1 17095 1259lem4 17098 2503lem1 17101 2503lem2 17102 2503lem3 17103 4001lem1 17105 4001lem2 17106 4001lem3 17107 4001prm 17109 pcoass 25004 minveclem2 25406 uniioombllem5 25567 uniioombl 25569 dveflem 25959 pilem2 26433 sinhalfpilem 26443 sincosq1lem 26477 tangtx 26485 sincos4thpi 26493 heron 26818 quad2 26819 dquartlem1 26831 dquart 26833 quart1 26836 atan1 26908 log2ublem3 26928 log2ub 26929 chtub 27192 bclbnd 27260 bpos1 27263 bposlem2 27265 bposlem6 27269 bposlem9 27272 gausslemma2dlem3 27348 m1lgs 27368 2lgslem1a2 27370 2lgslem3a 27376 2lgslem3b 27377 2lgslem3c 27378 2lgslem3d 27379 pntibndlem2 27571 pntlemg 27578 pntlemr 27582 ex-fl 30535 minvecolem2 30964 polid2i 31246 binom2subadd 32832 quad3d 32840 quad3 35871 420lcm8e840 42467 3exp7 42509 3lexlogpow5ineq1 42510 3lexlogpow2ineq2 42515 3lexlogpow5ineq5 42516 aks4d1p1p2 42526 aks4d1p1 42532 2ap1caineq 42601 cxpi11d 42792 flt4lem 43095 3cubeslem3l 43135 3cubeslem3r 43136 wallispi2lem1 46520 wallispi2lem2 46521 stirlinglem3 46525 stirlinglem10 46532 sin5tlem2 47341 2ltceilhalf 47795 ceil5half3 47809 modmkpkne 47830 fmtnorec4 48027 nprmdvdsfacm1lem4 48101 ppivalnn4 48105 2exp340mod341 48224 8exp8mod9 48227 ackval2012 49182 |
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