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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 12360 | . . . 4 ⊢ 8 ∈ ℕ | |
| 2 | 4nn 12348 | . . . 4 ⊢ 4 ∈ ℕ | |
| 3 | 5nn0 12548 | . . . . . 6 ⊢ 5 ∈ ℕ0 | |
| 4 | 2nn 12338 | . . . . . 6 ⊢ 2 ∈ ℕ | |
| 5 | 3, 4 | decnncl 12760 | . . . . 5 ⊢ ;52 ∈ ℕ |
| 6 | 5 | nnzi 12642 | . . . 4 ⊢ ;52 ∈ ℤ |
| 7 | 1, 2, 6 | gcdaddmzz2nncomi 42861 | . . 3 ⊢ (8 gcd 4) = (8 gcd ((;52 · 8) + 4)) |
| 8 | 4nn0 12547 | . . . . . . 7 ⊢ 4 ∈ ℕ0 | |
| 9 | 1nn0 12544 | . . . . . . 7 ⊢ 1 ∈ ℕ0 | |
| 10 | 8, 9 | deccl 12751 | . . . . . 6 ⊢ ;41 ∈ ℕ0 |
| 11 | 6nn0 12549 | . . . . . 6 ⊢ 6 ∈ ℕ0 | |
| 12 | 0nn0 12543 | . . . . . 6 ⊢ 0 ∈ ℕ0 | |
| 13 | eqid 2760 | . . . . . 6 ⊢ ;;416 = ;;416 | |
| 14 | 8 | dec0h 12763 | . . . . . 6 ⊢ 4 = ;04 |
| 15 | 1p1e2 12388 | . . . . . . 7 ⊢ (1 + 1) = 2 | |
| 16 | 10 | nn0cni 12540 | . . . . . . . 8 ⊢ ;41 ∈ ℂ |
| 17 | 16 | addridi 11421 | . . . . . . 7 ⊢ (;41 + 0) = ;41 |
| 18 | 8, 9, 15, 17 | decsuc 12772 | . . . . . 6 ⊢ ((;41 + 0) + 1) = ;42 |
| 19 | 6p4e10 12813 | . . . . . 6 ⊢ (6 + 4) = ;10 | |
| 20 | 10, 11, 12, 8, 13, 14, 18, 19 | decaddc2 12797 | . . . . 5 ⊢ (;;416 + 4) = ;;420 |
| 21 | 8nn0 12551 | . . . . . . . 8 ⊢ 8 ∈ ℕ0 | |
| 22 | 2nn0 12545 | . . . . . . . 8 ⊢ 2 ∈ ℕ0 | |
| 23 | eqid 2760 | . . . . . . . 8 ⊢ ;52 = ;52 | |
| 24 | 0p1e1 12385 | . . . . . . . . 9 ⊢ (0 + 1) = 1 | |
| 25 | 8t5e40 12859 | . . . . . . . . 9 ⊢ (8 · 5) = ;40 | |
| 26 | 8, 12, 24, 25 | decsuc 12772 | . . . . . . . 8 ⊢ ((8 · 5) + 1) = ;41 |
| 27 | 8t2e16 12856 | . . . . . . . 8 ⊢ (8 · 2) = ;16 | |
| 28 | 21, 3, 22, 23, 11, 9, 26, 27 | decmul2c 12807 | . . . . . . 7 ⊢ (8 · ;52) = ;;416 |
| 29 | 1, 5 | mulcomnni 42853 | . . . . . . 7 ⊢ (8 · ;52) = (;52 · 8) |
| 30 | 28, 29 | eqtr3i 2785 | . . . . . 6 ⊢ ;;416 = (;52 · 8) |
| 31 | 30 | oveq1i 7423 | . . . . 5 ⊢ (;;416 + 4) = ((;52 · 8) + 4) |
| 32 | 20, 31 | eqtr3i 2785 | . . . 4 ⊢ ;;420 = ((;52 · 8) + 4) |
| 33 | 32 | oveq2i 7424 | . . 3 ⊢ (8 gcd ;;420) = (8 gcd ((;52 · 8) + 4)) |
| 34 | 7, 33 | eqtr4i 2786 | . 2 ⊢ (8 gcd 4) = (8 gcd ;;420) |
| 35 | 1, 2 | gcdcomnni 42854 | . . 3 ⊢ (8 gcd 4) = (4 gcd 8) |
| 36 | 4t2e8 12433 | . . . . 5 ⊢ (4 · 2) = 8 | |
| 37 | 36 | oveq2i 7424 | . . . 4 ⊢ (4 gcd (4 · 2)) = (4 gcd 8) |
| 38 | 2, 4 | gcdmultiplei 42859 | . . . 4 ⊢ (4 gcd (4 · 2)) = 4 |
| 39 | 37, 38 | eqtr3i 2785 | . . 3 ⊢ (4 gcd 8) = 4 |
| 40 | 35, 39 | eqtri 2783 | . 2 ⊢ (8 gcd 4) = 4 |
| 41 | 8, 4 | decnncl 12760 | . . . 4 ⊢ ;42 ∈ ℕ |
| 42 | 41 | decnncl2 12765 | . . 3 ⊢ ;;420 ∈ ℕ |
| 43 | 1, 42 | gcdcomnni 42854 | . 2 ⊢ (8 gcd ;;420) = (;;420 gcd 8) |
| 44 | 34, 40, 43 | 3eqtr3ri 2792 | 1 ⊢ (;;420 gcd 8) = 4 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 (class class class)co 7413 0cc0 11124 1c1 11125 + caddc 11127 · cmul 11129 2c2 12319 4c4 12321 5c5 12322 6c6 12323 8c8 12325 ;cdc 12736 gcd cgcd 16584 |
| 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 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 ax-un 7736 ax-cnex 11180 ax-resscn 11181 ax-1cn 11182 ax-icn 11183 ax-addcl 11184 ax-addrcl 11185 ax-mulcl 11186 ax-mulrcl 11187 ax-mulcom 11188 ax-addass 11189 ax-mulass 11190 ax-distr 11191 ax-i2m1 11192 ax-1ne0 11193 ax-1rid 11194 ax-rnegex 11195 ax-rrecex 11196 ax-cnre 11197 ax-pre-lttri 11198 ax-pre-lttrn 11199 ax-pre-ltadd 11200 ax-pre-mulgt0 11201 ax-pre-sup 11202 |
| 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 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-pred 6299 df-ord 6360 df-on 6361 df-lim 6362 df-suc 6363 df-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-riota 7370 df-ov 7416 df-oprab 7417 df-mpo 7418 df-om 7863 df-2nd 7987 df-frecs 8280 df-wrecs 8311 df-recs 8360 df-rdg 8399 df-er 8696 df-en 8953 df-dom 8954 df-sdom 8955 df-sup 9412 df-inf 9413 df-pnf 11269 df-mnf 11270 df-xr 11271 df-ltxr 11272 df-le 11273 df-sub 11467 df-neg 11468 df-div 11896 df-nn 12258 df-2 12327 df-3 12328 df-4 12329 df-5 12330 df-6 12331 df-7 12332 df-8 12333 df-9 12334 df-n0 12529 df-z 12616 df-dec 12737 df-uz 12888 df-rp 13043 df-seq 14066 df-exp 14126 df-cj 15186 df-re 15187 df-im 15188 df-sqrt 15322 df-abs 15323 df-dvds 16343 df-gcd 16585 |
| This theorem is used by: 420lcm8e840 42877 |
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