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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 11700 | . . 3 ⊢ 2 ∈ ℂ | |
2 | 1 | 2timesi 11763 | . 2 ⊢ (2 · 2) = (2 + 2) |
3 | 2p2e4 11760 | . 2 ⊢ (2 + 2) = 4 | |
4 | 2, 3 | eqtri 2821 | 1 ⊢ (2 · 2) = 4 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1538 (class class class)co 7135 + caddc 10529 · cmul 10531 2c2 11680 4c4 11682 |
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 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-ext 2770 ax-resscn 10583 ax-1cn 10584 ax-icn 10585 ax-addcl 10586 ax-mulcl 10588 ax-mulcom 10590 ax-addass 10591 ax-mulass 10592 ax-distr 10593 ax-1rid 10596 ax-cnre 10599 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3an 1086 df-ex 1782 df-sb 2070 df-clab 2777 df-cleq 2791 df-clel 2870 df-ral 3111 df-rex 3112 df-v 3443 df-un 3886 df-in 3888 df-ss 3898 df-sn 4526 df-pr 4528 df-op 4532 df-uni 4801 df-br 5031 df-iota 6283 df-fv 6332 df-ov 7138 df-2 11688 df-3 11689 df-4 11690 |
This theorem is referenced by: 4d2e2 11795 halfpm6th 11846 div4p1lem1div2 11880 3halfnz 12049 decbin0 12226 fldiv4lem1div2uz2 13201 sq2 13556 sq4e2t8 13558 discr 13597 sqoddm1div8 13600 faclbnd2 13647 4bc2eq6 13685 amgm2 14721 bpoly3 15404 sin4lt0 15540 z4even 15713 flodddiv4 15754 flodddiv4t2lthalf 15757 4nprm 16029 2exp4 16411 2exp16 16416 5prm 16434 631prm 16452 1259lem1 16456 1259lem4 16459 2503lem1 16462 2503lem2 16463 2503lem3 16464 4001lem1 16466 4001lem2 16467 4001lem3 16468 4001prm 16470 pcoass 23629 minveclem2 24030 uniioombllem5 24191 uniioombl 24193 dveflem 24582 pilem2 25047 sinhalfpilem 25056 sincosq1lem 25090 tangtx 25098 sincos4thpi 25106 heron 25424 quad2 25425 dquartlem1 25437 dquart 25439 quart1 25442 atan1 25514 log2ublem3 25534 log2ub 25535 chtub 25796 bclbnd 25864 bpos1 25867 bposlem2 25869 bposlem6 25873 bposlem9 25876 gausslemma2dlem3 25952 m1lgs 25972 2lgslem1a2 25974 2lgslem3a 25980 2lgslem3b 25981 2lgslem3c 25982 2lgslem3d 25983 pntibndlem2 26175 pntlemg 26182 pntlemr 26186 ex-fl 28232 minvecolem2 28658 polid2i 28940 quad3 33026 420lcm8e840 39299 3lexlogpow5ineq1 39341 2ap1caineq 39349 3cubeslem3l 39627 3cubeslem3r 39628 wallispi2lem1 42713 wallispi2lem2 42714 stirlinglem3 42718 stirlinglem10 42725 fmtnorec4 44066 2exp340mod341 44251 8exp8mod9 44254 ackval2012 45105 |
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