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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 11715 | . . 3 ⊢ 2 ∈ ℂ | |
2 | 1 | 2timesi 11778 | . 2 ⊢ (2 · 2) = (2 + 2) |
3 | 2p2e4 11775 | . 2 ⊢ (2 + 2) = 4 | |
4 | 2, 3 | eqtri 2846 | 1 ⊢ (2 · 2) = 4 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1537 (class class class)co 7158 + caddc 10542 · cmul 10544 2c2 11695 4c4 11697 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 ax-resscn 10596 ax-1cn 10597 ax-icn 10598 ax-addcl 10599 ax-mulcl 10601 ax-mulcom 10603 ax-addass 10604 ax-mulass 10605 ax-distr 10606 ax-1rid 10609 ax-cnre 10612 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-ral 3145 df-rex 3146 df-rab 3149 df-v 3498 df-dif 3941 df-un 3943 df-in 3945 df-ss 3954 df-nul 4294 df-if 4470 df-sn 4570 df-pr 4572 df-op 4576 df-uni 4841 df-br 5069 df-iota 6316 df-fv 6365 df-ov 7161 df-2 11703 df-3 11704 df-4 11705 |
This theorem is referenced by: 4d2e2 11810 halfpm6th 11861 div4p1lem1div2 11895 3halfnz 12064 decbin0 12241 fldiv4lem1div2uz2 13209 sq2 13563 sq4e2t8 13565 discr 13604 sqoddm1div8 13607 faclbnd2 13654 4bc2eq6 13692 amgm2 14731 bpoly3 15414 sin4lt0 15550 z4even 15725 flodddiv4 15766 flodddiv4t2lthalf 15769 4nprm 16041 2exp4 16423 2exp16 16426 5prm 16444 631prm 16462 1259lem1 16466 1259lem4 16469 2503lem1 16472 2503lem2 16473 2503lem3 16474 4001lem1 16476 4001lem2 16477 4001lem3 16478 4001prm 16480 pcoass 23630 minveclem2 24031 uniioombllem5 24190 uniioombl 24192 dveflem 24578 pilem2 25042 sinhalfpilem 25051 sincosq1lem 25085 tangtx 25093 sincos4thpi 25101 heron 25418 quad2 25419 dquartlem1 25431 dquart 25433 quart1 25436 atan1 25508 log2ublem3 25528 log2ub 25529 chtub 25790 bclbnd 25858 bpos1 25861 bposlem2 25863 bposlem6 25867 bposlem9 25870 gausslemma2dlem3 25946 m1lgs 25966 2lgslem1a2 25968 2lgslem3a 25974 2lgslem3b 25975 2lgslem3c 25976 2lgslem3d 25977 pntibndlem2 26169 pntlemg 26176 pntlemr 26180 ex-fl 28228 minvecolem2 28654 polid2i 28936 quad3 32915 3cubeslem3l 39290 3cubeslem3r 39291 wallispi2lem1 42363 wallispi2lem2 42364 stirlinglem3 42368 stirlinglem10 42375 fmtnorec4 43718 2exp340mod341 43905 8exp8mod9 43908 |
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