| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 12331 | . . 3 ⊢ 2 ∈ ℂ | |
| 2 | 1 | 2timesi 12393 | . 2 ⊢ (2 · 2) = (2 + 2) |
| 3 | 2p2e4 12390 | . 2 ⊢ (2 + 2) = 4 | |
| 4 | 2, 3 | eqtri 2788 | 1 ⊢ (2 · 2) = 4 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 (class class class)co 7419 + caddc 11118 · cmul 11120 2c2 12310 4c4 12312 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-ext 2737 ax-resscn 11172 ax-1cn 11173 ax-icn 11174 ax-addcl 11175 ax-mulcl 11177 ax-mulcom 11179 ax-addass 11180 ax-mulass 11181 ax-distr 11182 ax-1rid 11185 ax-cnre 11188 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2100 df-clab 2744 df-cleq 2757 df-clel 2840 df-rex 3092 df-rab 3419 df-v 3459 df-dif 3909 df-un 3911 df-ss 3923 df-nul 4287 df-if 4490 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-br 5112 df-iota 6496 df-fv 6548 df-ov 7422 df-2 12318 df-3 12319 df-4 12320 |
| This theorem is used by: 4div2e2 12427 div4p1lem1div2 12514 3halfnz 12691 decbin0 12874 fldiv4lem1div2uz2 13887 sq2 14251 sq4e2t8 14253 discr 14294 sqoddm1div8 14297 faclbnd2 14345 4bc2eq6 14383 amgm2 15445 bpoly3 16134 sin4lt0 16273 z4even 16452 flodddiv4 16495 flodddiv4t2lthalf 16498 4nprm 16775 2exp4 17166 2exp16 17172 5prm 17190 631prm 17209 1259lem1 17213 1259lem4 17216 2503lem1 17219 2503lem2 17220 2503lem3 17221 4001lem1 17223 4001lem2 17224 4001lem3 17225 4001prm 17227 pcoass 25234 minveclem2 25636 uniioombllem5 25797 uniioombl 25799 dveflem 26189 pilem2 26666 sinhalfpilem 26679 sincosq1lem 26713 tangtx 26721 sincos4thpi 26729 heron 27054 quad2 27055 dquartlem1 27067 dquart 27069 quart1 27072 atan1 27144 log2ublem3 27164 log2ub 27165 chtub 27427 bclbnd 27495 bpos1 27498 bposlem2 27500 bposlem6 27504 bposlem9 27507 gausslemma2dlem3 27583 m1lgs 27603 2lgslem1a2 27605 2lgslem3a 27611 2lgslem3b 27612 2lgslem3c 27613 2lgslem3d 27614 pntibndlem2 27806 pntlemg 27813 pntlemr 27817 ex-fl 30869 minvecolem2 31298 polid2i 31580 binom2subadd 33156 quad3d 33164 quad3 36199 420lcm8e840 42836 3exp7 42878 3lexlogpow5ineq1 42879 3lexlogpow2ineq2 42884 3lexlogpow5ineq5 42885 aks4d1p1p2 42895 aks4d1p1 42901 2ap1caineq 42970 25or6to4 43031 cxpi11d 43162 flt4lem 43435 3cubeslem3l 43475 3cubeslem3r 43476 wallispi2lem1 46843 wallispi2lem2 46844 stirlinglem3 46848 stirlinglem10 46855 sin5tlem2 47669 cos5t 47674 2ltceilhalf 48127 ceil5half3 48141 modmkpkne 48162 fmtnorec4 48359 nprmdvdsfacm1lem4 48433 ppivalnn4 48437 2exp340mod341 48556 8exp8mod9 48559 ackval2012 49528 |
| Copyright terms: Public domain | W3C validator |