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Mirrors > Home > MPE Home > Th. List > decexp2 | Structured version Visualization version GIF version |
Description: Calculate a power of two. (Contributed by Mario Carneiro, 19-Feb-2014.) |
Ref | Expression |
---|---|
decexp2.1 | โข ๐ โ โ0 |
decexp2.2 | โข (๐ + 2) = ๐ |
Ref | Expression |
---|---|
decexp2 | โข ((4 ยท (2โ๐)) + 0) = (2โ๐) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 2cn 12284 | . . . . 5 โข 2 โ โ | |
2 | 2nn0 12486 | . . . . . . 7 โข 2 โ โ0 | |
3 | decexp2.1 | . . . . . . 7 โข ๐ โ โ0 | |
4 | 2, 3 | nn0expcli 14051 | . . . . . 6 โข (2โ๐) โ โ0 |
5 | 4 | nn0cni 12481 | . . . . 5 โข (2โ๐) โ โ |
6 | 1, 5 | mulcli 11218 | . . . 4 โข (2 ยท (2โ๐)) โ โ |
7 | expp1 14031 | . . . . . . 7 โข ((2 โ โ โง ๐ โ โ0) โ (2โ(๐ + 1)) = ((2โ๐) ยท 2)) | |
8 | 1, 3, 7 | mp2an 691 | . . . . . 6 โข (2โ(๐ + 1)) = ((2โ๐) ยท 2) |
9 | 5, 1 | mulcomi 11219 | . . . . . 6 โข ((2โ๐) ยท 2) = (2 ยท (2โ๐)) |
10 | 8, 9 | eqtr2i 2762 | . . . . 5 โข (2 ยท (2โ๐)) = (2โ(๐ + 1)) |
11 | 10 | oveq1i 7416 | . . . 4 โข ((2 ยท (2โ๐)) ยท 2) = ((2โ(๐ + 1)) ยท 2) |
12 | 6, 1, 11 | mulcomli 11220 | . . 3 โข (2 ยท (2 ยท (2โ๐))) = ((2โ(๐ + 1)) ยท 2) |
13 | 4 | decbin0 12814 | . . 3 โข (4 ยท (2โ๐)) = (2 ยท (2 ยท (2โ๐))) |
14 | peano2nn0 12509 | . . . . 5 โข (๐ โ โ0 โ (๐ + 1) โ โ0) | |
15 | 3, 14 | ax-mp 5 | . . . 4 โข (๐ + 1) โ โ0 |
16 | expp1 14031 | . . . 4 โข ((2 โ โ โง (๐ + 1) โ โ0) โ (2โ((๐ + 1) + 1)) = ((2โ(๐ + 1)) ยท 2)) | |
17 | 1, 15, 16 | mp2an 691 | . . 3 โข (2โ((๐ + 1) + 1)) = ((2โ(๐ + 1)) ยท 2) |
18 | 12, 13, 17 | 3eqtr4i 2771 | . 2 โข (4 ยท (2โ๐)) = (2โ((๐ + 1) + 1)) |
19 | 4nn0 12488 | . . . . 5 โข 4 โ โ0 | |
20 | 19, 4 | nn0mulcli 12507 | . . . 4 โข (4 ยท (2โ๐)) โ โ0 |
21 | 20 | nn0cni 12481 | . . 3 โข (4 ยท (2โ๐)) โ โ |
22 | 21 | addridi 11398 | . 2 โข ((4 ยท (2โ๐)) + 0) = (4 ยท (2โ๐)) |
23 | 3 | nn0cni 12481 | . . . . 5 โข ๐ โ โ |
24 | ax-1cn 11165 | . . . . 5 โข 1 โ โ | |
25 | 23, 24, 24 | addassi 11221 | . . . 4 โข ((๐ + 1) + 1) = (๐ + (1 + 1)) |
26 | df-2 12272 | . . . . 5 โข 2 = (1 + 1) | |
27 | 26 | oveq2i 7417 | . . . 4 โข (๐ + 2) = (๐ + (1 + 1)) |
28 | decexp2.2 | . . . 4 โข (๐ + 2) = ๐ | |
29 | 25, 27, 28 | 3eqtr2ri 2768 | . . 3 โข ๐ = ((๐ + 1) + 1) |
30 | 29 | oveq2i 7417 | . 2 โข (2โ๐) = (2โ((๐ + 1) + 1)) |
31 | 18, 22, 30 | 3eqtr4i 2771 | 1 โข ((4 ยท (2โ๐)) + 0) = (2โ๐) |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1542 โ wcel 2107 (class class class)co 7406 โcc 11105 0cc0 11107 1c1 11108 + caddc 11110 ยท cmul 11112 2c2 12264 4c4 12266 โ0cn0 12469 โcexp 14024 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2704 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7722 ax-cnex 11163 ax-resscn 11164 ax-1cn 11165 ax-icn 11166 ax-addcl 11167 ax-addrcl 11168 ax-mulcl 11169 ax-mulrcl 11170 ax-mulcom 11171 ax-addass 11172 ax-mulass 11173 ax-distr 11174 ax-i2m1 11175 ax-1ne0 11176 ax-1rid 11177 ax-rnegex 11178 ax-rrecex 11179 ax-cnre 11180 ax-pre-lttri 11181 ax-pre-lttrn 11182 ax-pre-ltadd 11183 ax-pre-mulgt0 11184 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2535 df-eu 2564 df-clab 2711 df-cleq 2725 df-clel 2811 df-nfc 2886 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-reu 3378 df-rab 3434 df-v 3477 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-pss 3967 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-op 4635 df-uni 4909 df-iun 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5574 df-eprel 5580 df-po 5588 df-so 5589 df-fr 5631 df-we 5633 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-pred 6298 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6493 df-fun 6543 df-fn 6544 df-f 6545 df-f1 6546 df-fo 6547 df-f1o 6548 df-fv 6549 df-riota 7362 df-ov 7409 df-oprab 7410 df-mpo 7411 df-om 7853 df-2nd 7973 df-frecs 8263 df-wrecs 8294 df-recs 8368 df-rdg 8407 df-er 8700 df-en 8937 df-dom 8938 df-sdom 8939 df-pnf 11247 df-mnf 11248 df-xr 11249 df-ltxr 11250 df-le 11251 df-sub 11443 df-neg 11444 df-nn 12210 df-2 12272 df-3 12273 df-4 12274 df-n0 12470 df-z 12556 df-uz 12820 df-seq 13964 df-exp 14025 |
This theorem is referenced by: (None) |
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