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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 12425 | . . 3 ⊢ 2 ∈ ℂ | |
| 2 | 1 | 2timesi 12487 | . 2 ⊢ (2 · 2) = (2 + 2) |
| 3 | 2p2e4 12484 | . 2 ⊢ (2 + 2) = 4 | |
| 4 | 2, 3 | eqtri 2783 | 1 ⊢ (2 · 2) = 4 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1569 (class class class)co 7424 + caddc 11210 · cmul 11212 2c2 12404 4c4 12406 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-ext 2732 ax-resscn 11264 ax-1cn 11265 ax-icn 11266 ax-addcl 11267 ax-mulcl 11269 ax-mulcom 11271 ax-addass 11272 ax-mulass 11273 ax-distr 11274 ax-1rid 11277 ax-cnre 11280 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-sb 2099 df-clab 2739 df-cleq 2752 df-clel 2835 df-rex 3087 df-rab 3413 df-v 3452 df-ss 3897 df-dif 4046 df-un 4150 df-nul 4278 df-if 4482 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-br 5103 df-iota 6497 df-fv 6551 df-ov 7427 df-2 12412 df-3 12413 df-4 12414 |
| This theorem is used by: 4div2e2 12521 div4p1lem1div2 12608 3halfnz 12785 decbin0 12968 fldiv4lem1div2uz2 13983 sq2 14347 sq4e2t8 14349 exp4sqsq 14351 discr 14391 sqoddm1div8 14394 faclbnd2 14442 4bc2eq6 14480 amgm2 15546 bpoly3 16233 sin4lt0 16372 z4even 16551 flodddiv4 16594 flodddiv4t2lthalf 16597 4nprm 16879 2exp4 17271 2exp16 17277 5prm 17295 631prm 17314 1259lem1 17318 1259lem4 17321 2503lem1 17324 2503lem2 17325 2503lem3 17326 4001lem1 17328 4001lem2 17329 4001lem3 17330 4001prm 17332 pcoass 25354 minveclem2 25756 uniioombllem5 25917 uniioombl 25919 dveflem 26308 pilem2 26788 sinhalfpilem 26801 sincosq1lem 26835 tangtx 26843 sincos4thpi 26851 heron 27175 quad2 27176 dquartlem1 27188 dquart 27190 quart1 27193 atan1 27265 log2ublem3 27285 log2ub 27286 chtub 27548 bclbnd 27616 bpos1 27619 bposlem2 27621 bposlem6 27625 bposlem9 27628 gausslemma2dlem3 27704 m1lgs 27724 2lgslem1a2 27726 2lgslem3a 27732 2lgslem3b 27733 2lgslem3c 27734 2lgslem3d 27735 pntibndlem2 27927 pntlemg 27934 pntlemr 27938 ex-fl 31057 minvecolem2 31486 polid2i 31768 binom2subadd 33383 quad3d 33391 quad3 36553 420lcm8e840 43198 3exp7 43240 3lexlogpow5ineq1 43241 3lexlogpow2ineq2 43246 3lexlogpow5ineq5 43247 aks4d1p1p2 43257 aks4d1p1 43263 2ap1caineq 43332 25or6to4 43393 cxpi11d 43531 3cubeslem3l 43833 3cubeslem3r 43834 wallispi2lem1 47217 wallispi2lem2 47218 stirlinglem3 47222 stirlinglem10 47229 sin5tlem2 48056 cos5t 48061 goldpolyfactor 48063 2ltceilhalf 48538 ceil5half3 48552 modmkpkne 48573 fmtnorec4 48770 nprmdvdsfacm1lem4 48844 ppivalnn4 48848 2exp340mod341 48967 8exp8mod9 48970 ackval2012 49939 |
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