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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 12256 | . . 3 ⊢ 2 ∈ ℂ | |
| 2 | 1 | 2timesi 12314 | . 2 ⊢ (2 · 2) = (2 + 2) |
| 3 | 2p2e4 12311 | . 2 ⊢ (2 + 2) = 4 | |
| 4 | 2, 3 | eqtri 2759 | 1 ⊢ (2 · 2) = 4 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 (class class class)co 7367 + caddc 11041 · cmul 11043 2c2 12236 4c4 12238 |
| 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 2708 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-mulcl 11100 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-1rid 11108 ax-cnre 11111 |
| 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 2715 df-cleq 2728 df-clel 2811 df-rex 3062 df-rab 3390 df-v 3431 df-dif 3892 df-un 3894 df-ss 3906 df-nul 4274 df-if 4467 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-br 5086 df-iota 6454 df-fv 6506 df-ov 7370 df-2 12244 df-3 12245 df-4 12246 |
| This theorem is referenced by: 4div2e2 12346 div4p1lem1div2 12432 3halfnz 12608 decbin0 12784 fldiv4lem1div2uz2 13795 sq2 14159 sq4e2t8 14161 discr 14202 sqoddm1div8 14205 faclbnd2 14253 4bc2eq6 14291 amgm2 15332 bpoly3 16023 sin4lt0 16162 z4even 16341 flodddiv4 16384 flodddiv4t2lthalf 16387 4nprm 16664 2exp4 17055 2exp16 17061 5prm 17079 631prm 17097 1259lem1 17101 1259lem4 17104 2503lem1 17107 2503lem2 17108 2503lem3 17109 4001lem1 17111 4001lem2 17112 4001lem3 17113 4001prm 17115 pcoass 24991 minveclem2 25393 uniioombllem5 25554 uniioombl 25556 dveflem 25946 pilem2 26417 sinhalfpilem 26427 sincosq1lem 26461 tangtx 26469 sincos4thpi 26477 heron 26802 quad2 26803 dquartlem1 26815 dquart 26817 quart1 26820 atan1 26892 log2ublem3 26912 log2ub 26913 chtub 27175 bclbnd 27243 bpos1 27246 bposlem2 27248 bposlem6 27252 bposlem9 27255 gausslemma2dlem3 27331 m1lgs 27351 2lgslem1a2 27353 2lgslem3a 27359 2lgslem3b 27360 2lgslem3c 27361 2lgslem3d 27362 pntibndlem2 27554 pntlemg 27561 pntlemr 27565 ex-fl 30517 minvecolem2 30946 polid2i 31228 binom2subadd 32814 quad3d 32822 quad3 35852 420lcm8e840 42450 3exp7 42492 3lexlogpow5ineq1 42493 3lexlogpow2ineq2 42498 3lexlogpow5ineq5 42499 aks4d1p1p2 42509 aks4d1p1 42515 2ap1caineq 42584 cxpi11d 42775 flt4lem 43078 3cubeslem3l 43118 3cubeslem3r 43119 wallispi2lem1 46499 wallispi2lem2 46500 stirlinglem3 46504 stirlinglem10 46511 sin5tlem2 47322 cos5t 47327 2ltceilhalf 47780 ceil5half3 47794 modmkpkne 47815 fmtnorec4 48012 nprmdvdsfacm1lem4 48086 ppivalnn4 48090 2exp340mod341 48209 8exp8mod9 48212 ackval2012 49167 |
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