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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 12478 | . . . 4 ⊢ 8 ∈ ℕ | |
| 2 | 4nn 12466 | . . . 4 ⊢ 4 ∈ ℕ | |
| 3 | 5nn0 12666 | . . . . . 6 ⊢ 5 ∈ ℕ0 | |
| 4 | 2nn 12456 | . . . . . 6 ⊢ 2 ∈ ℕ | |
| 5 | 3, 4 | decnncl 12878 | . . . . 5 ⊢ ;52 ∈ ℕ |
| 6 | 5 | nnzi 12760 | . . . 4 ⊢ ;52 ∈ ℤ |
| 7 | 1, 2, 6 | gcdaddmzz2nncomi 43311 | . . 3 ⊢ (8 gcd 4) = (8 gcd ((;52 · 8) + 4)) |
| 8 | 4nn0 12665 | . . . . . . 7 ⊢ 4 ∈ ℕ0 | |
| 9 | 1nn0 12662 | . . . . . . 7 ⊢ 1 ∈ ℕ0 | |
| 10 | 8, 9 | deccl 12869 | . . . . . 6 ⊢ ;41 ∈ ℕ0 |
| 11 | 6nn0 12667 | . . . . . 6 ⊢ 6 ∈ ℕ0 | |
| 12 | 0nn0 12661 | . . . . . 6 ⊢ 0 ∈ ℕ0 | |
| 13 | eqid 2763 | . . . . . 6 ⊢ ;;416 = ;;416 | |
| 14 | 8 | dec0h 12881 | . . . . . 6 ⊢ 4 = ;04 |
| 15 | 1p1e2 12506 | . . . . . . 7 ⊢ (1 + 1) = 2 | |
| 16 | 10 | nn0cni 12658 | . . . . . . . 8 ⊢ ;41 ∈ ℂ |
| 17 | 16 | addridi 11536 | . . . . . . 7 ⊢ (;41 + 0) = ;41 |
| 18 | 8, 9, 15, 17 | decsuc 12890 | . . . . . 6 ⊢ ((;41 + 0) + 1) = ;42 |
| 19 | 6p4e10 12931 | . . . . . 6 ⊢ (6 + 4) = ;10 | |
| 20 | 10, 11, 12, 8, 13, 14, 18, 19 | decaddc2 12915 | . . . . 5 ⊢ (;;416 + 4) = ;;420 |
| 21 | 8nn0 12669 | . . . . . . . 8 ⊢ 8 ∈ ℕ0 | |
| 22 | 2nn0 12663 | . . . . . . . 8 ⊢ 2 ∈ ℕ0 | |
| 23 | eqid 2763 | . . . . . . . 8 ⊢ ;52 = ;52 | |
| 24 | 0p1e1 12503 | . . . . . . . . 9 ⊢ (0 + 1) = 1 | |
| 25 | 8t5e40 12977 | . . . . . . . . 9 ⊢ (8 · 5) = ;40 | |
| 26 | 8, 12, 24, 25 | decsuc 12890 | . . . . . . . 8 ⊢ ((8 · 5) + 1) = ;41 |
| 27 | 8t2e16 12974 | . . . . . . . 8 ⊢ (8 · 2) = ;16 | |
| 28 | 21, 3, 22, 23, 11, 9, 26, 27 | decmul2c 12925 | . . . . . . 7 ⊢ (8 · ;52) = ;;416 |
| 29 | 1, 5 | mulcomnni 43303 | . . . . . . 7 ⊢ (8 · ;52) = (;52 · 8) |
| 30 | 28, 29 | eqtr3i 2788 | . . . . . 6 ⊢ ;;416 = (;52 · 8) |
| 31 | 30 | oveq1i 7461 | . . . . 5 ⊢ (;;416 + 4) = ((;52 · 8) + 4) |
| 32 | 20, 31 | eqtr3i 2788 | . . . 4 ⊢ ;;420 = ((;52 · 8) + 4) |
| 33 | 32 | oveq2i 7462 | . . 3 ⊢ (8 gcd ;;420) = (8 gcd ((;52 · 8) + 4)) |
| 34 | 7, 33 | eqtr4i 2789 | . 2 ⊢ (8 gcd 4) = (8 gcd ;;420) |
| 35 | 1, 2 | gcdcomnni 43304 | . . 3 ⊢ (8 gcd 4) = (4 gcd 8) |
| 36 | 4t2e8 12551 | . . . . 5 ⊢ (4 · 2) = 8 | |
| 37 | 36 | oveq2i 7462 | . . . 4 ⊢ (4 gcd (4 · 2)) = (4 gcd 8) |
| 38 | 2, 4 | gcdmultiplei 43309 | . . . 4 ⊢ (4 gcd (4 · 2)) = 4 |
| 39 | 37, 38 | eqtr3i 2788 | . . 3 ⊢ (4 gcd 8) = 4 |
| 40 | 35, 39 | eqtri 2786 | . 2 ⊢ (8 gcd 4) = 4 |
| 41 | 8, 4 | decnncl 12878 | . . . 4 ⊢ ;42 ∈ ℕ |
| 42 | 41 | decnncl2 12883 | . . 3 ⊢ ;;420 ∈ ℕ |
| 43 | 1, 42 | gcdcomnni 43304 | . 2 ⊢ (8 gcd ;;420) = (;;420 gcd 8) |
| 44 | 34, 40, 43 | 3eqtr3ri 2795 | 1 ⊢ (;;420 gcd 8) = 4 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 (class class class)co 7451 0cc0 11239 1c1 11240 + caddc 11242 · cmul 11244 2c2 12437 4c4 12439 5c5 12440 6c6 12441 8c8 12443 ;cdc 12854 gcd cgcd 16708 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5255 ax-nul 5266 ax-pow 5334 ax-pr 5398 ax-un 7783 ax-cnex 11295 ax-resscn 11296 ax-1cn 11297 ax-icn 11298 ax-addcl 11299 ax-addrcl 11300 ax-mulcl 11301 ax-mulrcl 11302 ax-mulcom 11303 ax-addass 11304 ax-mulass 11305 ax-distr 11306 ax-i2m1 11307 ax-1ne0 11308 ax-1rid 11309 ax-rnegex 11310 ax-rrecex 11311 ax-cnre 11312 ax-pre-lttri 11313 ax-pre-lttrn 11314 ax-pre-ltadd 11315 ax-pre-mulgt0 11316 ax-pre-sup 11317 |
| 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 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-iun 4958 df-br 5109 df-opab 5174 df-mpt 5193 df-tr 5219 df-id 5553 df-eprel 5558 df-po 5566 df-so 5567 df-fr 5611 df-we 5613 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 df-pred 6330 df-ord 6391 df-on 6392 df-lim 6393 df-suc 6394 df-iota 6520 df-fun 6568 df-fn 6569 df-f 6570 df-f1 6571 df-fo 6572 df-f1o 6573 df-fv 6574 df-riota 7408 df-ov 7454 df-oprab 7455 df-mpo 7456 df-om 7912 df-2nd 8036 df-frecs 8337 df-wrecs 8368 df-recs 8417 df-rdg 8456 df-er 8755 df-en 9012 df-dom 9013 df-sdom 9014 df-sup 9471 df-inf 9472 df-pnf 11384 df-mnf 11385 df-xr 11386 df-ltxr 11387 df-le 11388 df-sub 11582 df-neg 11583 df-div 12014 df-nn 12376 df-2 12445 df-3 12446 df-4 12447 df-5 12448 df-6 12449 df-7 12450 df-8 12451 df-9 12452 df-n0 12647 df-z 12734 df-dec 12855 df-uz 13006 df-rp 13161 df-seq 14185 df-exp 14245 df-cj 15309 df-re 15310 df-im 15311 df-sqrt 15445 df-abs 15446 df-dvds 16467 df-gcd 16709 |
| This theorem is used by: 420lcm8e840 43327 |
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