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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 12293 | . . 3 ⊢ 2 ∈ ℂ | |
| 2 | 1 | 2timesi 12355 | . 2 ⊢ (2 · 2) = (2 + 2) |
| 3 | 2p2e4 12352 | . 2 ⊢ (2 + 2) = 4 | |
| 4 | 2, 3 | eqtri 2785 | 1 ⊢ (2 · 2) = 4 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1560 (class class class)co 7396 + caddc 11076 · cmul 11078 2c2 12272 4c4 12274 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-ext 2734 ax-resscn 11130 ax-1cn 11131 ax-icn 11132 ax-addcl 11133 ax-mulcl 11135 ax-mulcom 11137 ax-addass 11138 ax-mulass 11139 ax-distr 11140 ax-1rid 11143 ax-cnre 11146 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-sb 2091 df-clab 2741 df-cleq 2754 df-clel 2837 df-rex 3087 df-rab 3415 df-v 3456 df-dif 3907 df-un 3909 df-ss 3921 df-nul 4286 df-if 4481 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-iota 6477 df-fv 6529 df-ov 7399 df-2 12280 df-3 12281 df-4 12282 |
| This theorem is referenced by: 4div2e2 12389 div4p1lem1div2 12476 3halfnz 12652 decbin0 12835 fldiv4lem1div2uz2 13846 sq2 14210 sq4e2t8 14212 discr 14253 sqoddm1div8 14256 faclbnd2 14304 4bc2eq6 14342 amgm2 15397 bpoly3 16088 sin4lt0 16227 z4even 16406 flodddiv4 16449 flodddiv4t2lthalf 16452 4nprm 16729 2exp4 17120 2exp16 17126 5prm 17144 631prm 17163 1259lem1 17167 1259lem4 17170 2503lem1 17173 2503lem2 17174 2503lem3 17175 4001lem1 17177 4001lem2 17178 4001lem3 17179 4001prm 17181 pcoass 25086 minveclem2 25488 uniioombllem5 25649 uniioombl 25651 dveflem 26041 pilem2 26515 sinhalfpilem 26528 sincosq1lem 26562 tangtx 26570 sincos4thpi 26578 heron 26903 quad2 26904 dquartlem1 26916 dquart 26918 quart1 26921 atan1 26993 log2ublem3 27013 log2ub 27014 chtub 27276 bclbnd 27344 bpos1 27347 bposlem2 27349 bposlem6 27353 bposlem9 27356 gausslemma2dlem3 27432 m1lgs 27452 2lgslem1a2 27454 2lgslem3a 27460 2lgslem3b 27461 2lgslem3c 27462 2lgslem3d 27463 pntibndlem2 27655 pntlemg 27662 pntlemr 27666 ex-fl 30649 minvecolem2 31078 polid2i 31360 binom2subadd 32943 quad3d 32951 quad3 36020 420lcm8e840 42628 3exp7 42670 3lexlogpow5ineq1 42671 3lexlogpow2ineq2 42676 3lexlogpow5ineq5 42677 aks4d1p1p2 42687 aks4d1p1 42693 2ap1caineq 42762 cxpi11d 42952 flt4lem 43227 3cubeslem3l 43267 3cubeslem3r 43268 wallispi2lem1 46645 wallispi2lem2 46646 stirlinglem3 46650 stirlinglem10 46657 sin5tlem2 47468 cos5t 47473 2ltceilhalf 47926 ceil5half3 47940 modmkpkne 47961 fmtnorec4 48158 nprmdvdsfacm1lem4 48232 ppivalnn4 48236 2exp340mod341 48355 8exp8mod9 48358 ackval2012 49313 |
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