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Mirrors > Home > MPE Home > Th. List > 2t2e4 | Structured version Visualization version Unicode version |
Description: 2 times 2 equals 4. (Contributed by NM, 1-Aug-1999.) |
Ref | Expression |
---|---|
2t2e4 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 2cn 11091 | . . 3 | |
2 | 1 | 2timesi 11147 | . 2 |
3 | 2p2e4 11144 | . 2 | |
4 | 2, 3 | eqtri 2644 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wceq 1483 (class class class)co 6650 caddc 9939 cmul 9941 c2 11070 c4 11072 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-resscn 9993 ax-1cn 9994 ax-icn 9995 ax-addcl 9996 ax-addrcl 9997 ax-mulcl 9998 ax-mulrcl 9999 ax-mulcom 10000 ax-addass 10001 ax-mulass 10002 ax-distr 10003 ax-i2m1 10004 ax-1ne0 10005 ax-1rid 10006 ax-rrecex 10008 ax-cnre 10009 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-ral 2917 df-rex 2918 df-rab 2921 df-v 3202 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-br 4654 df-iota 5851 df-fv 5896 df-ov 6653 df-2 11079 df-3 11080 df-4 11081 |
This theorem is referenced by: 4d2e2 11184 halfpm6th 11253 div4p1lem1div2 11287 3halfnz 11456 decbin0 11682 fldiv4lem1div2uz2 12637 sq2 12960 sq4e2t8 12962 discr 13001 sqoddm1div8 13028 faclbnd2 13078 4bc2eq6 13116 amgm2 14109 bpoly3 14789 sin4lt0 14925 z4even 15108 flodddiv4 15137 flodddiv4t2lthalf 15140 4nprm 15407 2exp4 15794 2exp16 15797 5prm 15815 631prm 15834 1259lem1 15838 1259lem4 15841 2503lem1 15844 2503lem2 15845 2503lem3 15846 4001lem1 15848 4001lem2 15849 4001lem3 15850 4001prm 15852 pcoass 22824 minveclem2 23197 uniioombllem5 23355 uniioombl 23357 dveflem 23742 pilem2 24206 sinhalfpilem 24215 sincosq1lem 24249 tangtx 24257 sincos4thpi 24265 heron 24565 quad2 24566 dquartlem1 24578 dquart 24580 quart1 24583 atan1 24655 log2ublem3 24675 log2ub 24676 ppiublem2 24928 chtub 24937 bclbnd 25005 bpos1 25008 bposlem2 25010 bposlem6 25014 bposlem9 25017 gausslemma2dlem3 25093 m1lgs 25113 2lgslem1a2 25115 2lgslem3a 25121 2lgslem3b 25122 2lgslem3c 25123 2lgslem3d 25124 pntibndlem2 25280 pntlemg 25287 pntlemr 25291 ex-fl 27304 minvecolem2 27731 polid2i 28014 quad3 31564 wallispi2lem1 40288 wallispi2lem2 40289 stirlinglem3 40293 stirlinglem10 40300 fmtnorec4 41461 |
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