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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 12247 | . . 3 ⊢ 2 ∈ ℂ | |
| 2 | 1 | 2timesi 12305 | . 2 ⊢ (2 · 2) = (2 + 2) |
| 3 | 2p2e4 12302 | . 2 ⊢ (2 + 2) = 4 | |
| 4 | 2, 3 | eqtri 2762 | 1 ⊢ (2 · 2) = 4 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1547 (class class class)co 7356 + caddc 11032 · cmul 11034 2c2 12227 4c4 12229 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-ext 2711 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-mulcl 11091 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-1rid 11099 ax-cnre 11102 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-sb 2074 df-clab 2718 df-cleq 2731 df-clel 2814 df-rex 3064 df-rab 3392 df-v 3433 df-dif 3886 df-un 3888 df-ss 3900 df-nul 4262 df-if 4455 df-sn 4556 df-pr 4558 df-op 4562 df-uni 4839 df-br 5073 df-iota 6441 df-fv 6493 df-ov 7359 df-2 12235 df-3 12236 df-4 12237 |
| This theorem is referenced by: 4div2e2 12337 div4p1lem1div2 12423 3halfnz 12599 decbin0 12775 fldiv4lem1div2uz2 13786 sq2 14150 sq4e2t8 14152 discr 14193 sqoddm1div8 14196 faclbnd2 14244 4bc2eq6 14282 amgm2 15323 bpoly3 16014 sin4lt0 16153 z4even 16332 flodddiv4 16375 flodddiv4t2lthalf 16378 4nprm 16655 2exp4 17046 2exp16 17052 5prm 17070 631prm 17088 1259lem1 17092 1259lem4 17095 2503lem1 17098 2503lem2 17099 2503lem3 17100 4001lem1 17102 4001lem2 17103 4001lem3 17104 4001prm 17106 pcoass 25009 minveclem2 25411 uniioombllem5 25572 uniioombl 25574 dveflem 25964 pilem2 26435 sinhalfpilem 26445 sincosq1lem 26479 tangtx 26487 sincos4thpi 26495 heron 26820 quad2 26821 dquartlem1 26833 dquart 26835 quart1 26838 atan1 26910 log2ublem3 26930 log2ub 26931 chtub 27193 bclbnd 27261 bpos1 27264 bposlem2 27266 bposlem6 27270 bposlem9 27273 gausslemma2dlem3 27349 m1lgs 27369 2lgslem1a2 27371 2lgslem3a 27377 2lgslem3b 27378 2lgslem3c 27379 2lgslem3d 27380 pntibndlem2 27572 pntlemg 27579 pntlemr 27583 ex-fl 30535 minvecolem2 30964 polid2i 31246 binom2subadd 32833 quad3d 32841 quad3 35898 420lcm8e840 42496 3exp7 42538 3lexlogpow5ineq1 42539 3lexlogpow2ineq2 42544 3lexlogpow5ineq5 42545 aks4d1p1p2 42555 aks4d1p1 42561 2ap1caineq 42630 cxpi11d 42820 flt4lem 43095 3cubeslem3l 43135 3cubeslem3r 43136 wallispi2lem1 46514 wallispi2lem2 46515 stirlinglem3 46519 stirlinglem10 46526 sin5tlem2 47337 cos5t 47342 2ltceilhalf 47795 ceil5half3 47809 modmkpkne 47830 fmtnorec4 48027 nprmdvdsfacm1lem4 48101 ppivalnn4 48105 2exp340mod341 48224 8exp8mod9 48227 ackval2012 49182 |
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