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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 10968 | . . 3 ⊢ 2 ∈ ℂ | |
2 | 1 | 2timesi 11024 | . 2 ⊢ (2 · 2) = (2 + 2) |
3 | 2p2e4 11021 | . 2 ⊢ (2 + 2) = 4 | |
4 | 2, 3 | eqtri 2632 | 1 ⊢ (2 · 2) = 4 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1475 (class class class)co 6549 + caddc 9818 · cmul 9820 2c2 10947 4c4 10949 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-resscn 9872 ax-1cn 9873 ax-icn 9874 ax-addcl 9875 ax-addrcl 9876 ax-mulcl 9877 ax-mulrcl 9878 ax-mulcom 9879 ax-addass 9880 ax-mulass 9881 ax-distr 9882 ax-i2m1 9883 ax-1ne0 9884 ax-1rid 9885 ax-rrecex 9887 ax-cnre 9888 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-ral 2901 df-rex 2902 df-rab 2905 df-v 3175 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-nul 3875 df-if 4037 df-sn 4126 df-pr 4128 df-op 4132 df-uni 4373 df-br 4584 df-iota 5768 df-fv 5812 df-ov 6552 df-2 10956 df-3 10957 df-4 10958 |
This theorem is referenced by: 4d2e2 11061 halfpm6th 11130 div4p1lem1div2 11164 3halfnz 11332 decbin0 11558 fldiv4lem1div2uz2 12499 sq2 12822 sq4e2t8 12824 discr 12863 sqoddm1div8 12890 faclbnd2 12940 4bc2eq6 12978 amgm2 13957 bpoly3 14628 sin4lt0 14764 z4even 14946 flodddiv4 14975 flodddiv4t2lthalf 14978 4nprm 15245 2exp4 15632 2exp16 15635 5prm 15653 631prm 15672 1259lem1 15676 1259lem4 15679 2503lem1 15682 2503lem2 15683 2503lem3 15684 4001lem1 15686 4001lem2 15687 4001lem3 15688 4001prm 15690 pcoass 22632 minveclem2 23005 uniioombllem5 23161 uniioombl 23163 dveflem 23546 pilem2 24010 sinhalfpilem 24019 sincosq1lem 24053 tangtx 24061 sincos4thpi 24069 heron 24365 quad2 24366 dquartlem1 24378 dquart 24380 quart1 24383 atan1 24455 log2ublem3 24475 log2ub 24476 ppiublem2 24728 chtub 24737 bclbnd 24805 bpos1 24808 bposlem2 24810 bposlem6 24814 bposlem9 24817 gausslemma2dlem3 24893 m1lgs 24913 2lgslem1a2 24915 2lgslem3a 24921 2lgslem3b 24922 2lgslem3c 24923 2lgslem3d 24924 pntibndlem2 25080 pntlemg 25087 pntlemr 25091 ex-fl 26696 minvecolem2 27115 polid2i 27398 quad3 30818 wallispi2lem1 38964 wallispi2lem2 38965 stirlinglem3 38969 stirlinglem10 38976 fmtnorec4 39999 |
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