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| Mirrors > Home > MPE Home > Th. List > Mathboxes > 420gcd8e4 | Structured version Visualization version GIF version | ||
| Description: The gcd of 420 and 8 is 4. (Contributed by metakunt, 25-Apr-2024.) |
| Ref | Expression |
|---|---|
| 420gcd8e4 | ⊢ (;;420 gcd 8) = 4 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 8nn 12347 | . . . 4 ⊢ 8 ∈ ℕ | |
| 2 | 4nn 12335 | . . . 4 ⊢ 4 ∈ ℕ | |
| 3 | 5nn0 12535 | . . . . . 6 ⊢ 5 ∈ ℕ0 | |
| 4 | 2nn 12325 | . . . . . 6 ⊢ 2 ∈ ℕ | |
| 5 | 3, 4 | decnncl 12747 | . . . . 5 ⊢ ;52 ∈ ℕ |
| 6 | 5 | nnzi 12629 | . . . 4 ⊢ ;52 ∈ ℤ |
| 7 | 1, 2, 6 | gcdaddmzz2nncomi 42795 | . . 3 ⊢ (8 gcd 4) = (8 gcd ((;52 · 8) + 4)) |
| 8 | 4nn0 12534 | . . . . . . 7 ⊢ 4 ∈ ℕ0 | |
| 9 | 1nn0 12531 | . . . . . . 7 ⊢ 1 ∈ ℕ0 | |
| 10 | 8, 9 | deccl 12738 | . . . . . 6 ⊢ ;41 ∈ ℕ0 |
| 11 | 6nn0 12536 | . . . . . 6 ⊢ 6 ∈ ℕ0 | |
| 12 | 0nn0 12530 | . . . . . 6 ⊢ 0 ∈ ℕ0 | |
| 13 | eqid 2765 | . . . . . 6 ⊢ ;;416 = ;;416 | |
| 14 | 8 | dec0h 12750 | . . . . . 6 ⊢ 4 = ;04 |
| 15 | 1p1e2 12375 | . . . . . . 7 ⊢ (1 + 1) = 2 | |
| 16 | 10 | nn0cni 12527 | . . . . . . . 8 ⊢ ;41 ∈ ℂ |
| 17 | 16 | addridi 11408 | . . . . . . 7 ⊢ (;41 + 0) = ;41 |
| 18 | 8, 9, 15, 17 | decsuc 12759 | . . . . . 6 ⊢ ((;41 + 0) + 1) = ;42 |
| 19 | 6p4e10 12800 | . . . . . 6 ⊢ (6 + 4) = ;10 | |
| 20 | 10, 11, 12, 8, 13, 14, 18, 19 | decaddc2 12784 | . . . . 5 ⊢ (;;416 + 4) = ;;420 |
| 21 | 8nn0 12538 | . . . . . . . 8 ⊢ 8 ∈ ℕ0 | |
| 22 | 2nn0 12532 | . . . . . . . 8 ⊢ 2 ∈ ℕ0 | |
| 23 | eqid 2765 | . . . . . . . 8 ⊢ ;52 = ;52 | |
| 24 | 0p1e1 12372 | . . . . . . . . 9 ⊢ (0 + 1) = 1 | |
| 25 | 8t5e40 12846 | . . . . . . . . 9 ⊢ (8 · 5) = ;40 | |
| 26 | 8, 12, 24, 25 | decsuc 12759 | . . . . . . . 8 ⊢ ((8 · 5) + 1) = ;41 |
| 27 | 8t2e16 12843 | . . . . . . . 8 ⊢ (8 · 2) = ;16 | |
| 28 | 21, 3, 22, 23, 11, 9, 26, 27 | decmul2c 12794 | . . . . . . 7 ⊢ (8 · ;52) = ;;416 |
| 29 | 1, 5 | mulcomnni 42787 | . . . . . . 7 ⊢ (8 · ;52) = (;52 · 8) |
| 30 | 28, 29 | eqtr3i 2790 | . . . . . 6 ⊢ ;;416 = (;52 · 8) |
| 31 | 30 | oveq1i 7426 | . . . . 5 ⊢ (;;416 + 4) = ((;52 · 8) + 4) |
| 32 | 20, 31 | eqtr3i 2790 | . . . 4 ⊢ ;;420 = ((;52 · 8) + 4) |
| 33 | 32 | oveq2i 7427 | . . 3 ⊢ (8 gcd ;;420) = (8 gcd ((;52 · 8) + 4)) |
| 34 | 7, 33 | eqtr4i 2791 | . 2 ⊢ (8 gcd 4) = (8 gcd ;;420) |
| 35 | 1, 2 | gcdcomnni 42788 | . . 3 ⊢ (8 gcd 4) = (4 gcd 8) |
| 36 | 4t2e8 12420 | . . . . 5 ⊢ (4 · 2) = 8 | |
| 37 | 36 | oveq2i 7427 | . . . 4 ⊢ (4 gcd (4 · 2)) = (4 gcd 8) |
| 38 | 2, 4 | gcdmultiplei 42793 | . . . 4 ⊢ (4 gcd (4 · 2)) = 4 |
| 39 | 37, 38 | eqtr3i 2790 | . . 3 ⊢ (4 gcd 8) = 4 |
| 40 | 35, 39 | eqtri 2788 | . 2 ⊢ (8 gcd 4) = 4 |
| 41 | 8, 4 | decnncl 12747 | . . . 4 ⊢ ;42 ∈ ℕ |
| 42 | 41 | decnncl2 12752 | . . 3 ⊢ ;;420 ∈ ℕ |
| 43 | 1, 42 | gcdcomnni 42788 | . 2 ⊢ (8 gcd ;;420) = (;;420 gcd 8) |
| 44 | 34, 40, 43 | 3eqtr3ri 2797 | 1 ⊢ (;;420 gcd 8) = 4 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 (class class class)co 7416 0cc0 11111 1c1 11112 + caddc 11114 · cmul 11116 2c2 12306 4c4 12308 5c5 12309 6c6 12310 8c8 12312 ;cdc 12723 gcd cgcd 16570 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 ax-un 7738 ax-cnex 11167 ax-resscn 11168 ax-1cn 11169 ax-icn 11170 ax-addcl 11171 ax-addrcl 11172 ax-mulcl 11173 ax-mulrcl 11174 ax-mulcom 11175 ax-addass 11176 ax-mulass 11177 ax-distr 11178 ax-i2m1 11179 ax-1ne0 11180 ax-1rid 11181 ax-rnegex 11182 ax-rrecex 11183 ax-cnre 11184 ax-pre-lttri 11185 ax-pre-lttrn 11186 ax-pre-ltadd 11187 ax-pre-mulgt0 11188 ax-pre-sup 11189 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3067 df-ral 3082 df-rex 3092 df-rmo 3371 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-iun 4960 df-br 5112 df-opab 5176 df-mpt 5195 df-tr 5221 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-pred 6306 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7373 df-ov 7419 df-oprab 7420 df-mpo 7421 df-om 7865 df-2nd 7989 df-frecs 8280 df-wrecs 8311 df-recs 8360 df-rdg 8399 df-er 8696 df-en 8946 df-dom 8947 df-sdom 8948 df-sup 9405 df-inf 9406 df-pnf 11256 df-mnf 11257 df-xr 11258 df-ltxr 11259 df-le 11260 df-sub 11454 df-neg 11455 df-div 11883 df-nn 12245 df-2 12314 df-3 12315 df-4 12316 df-5 12317 df-6 12318 df-7 12319 df-8 12320 df-9 12321 df-n0 12516 df-z 12603 df-dec 12724 df-uz 12875 df-rp 13029 df-seq 14052 df-exp 14112 df-cj 15170 df-re 15171 df-im 15172 df-sqrt 15306 df-abs 15307 df-dvds 16329 df-gcd 16571 |
| This theorem is used by: 420lcm8e840 42811 |
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