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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 12431 | . . . 4 ⊢ 8 ∈ ℕ | |
| 2 | 4nn 12419 | . . . 4 ⊢ 4 ∈ ℕ | |
| 3 | 5nn0 12619 | . . . . . 6 ⊢ 5 ∈ ℕ0 | |
| 4 | 2nn 12409 | . . . . . 6 ⊢ 2 ∈ ℕ | |
| 5 | 3, 4 | decnncl 12831 | . . . . 5 ⊢ ;52 ∈ ℕ |
| 6 | 5 | nnzi 12713 | . . . 4 ⊢ ;52 ∈ ℤ |
| 7 | 1, 2, 6 | gcdaddmzz2nncomi 43025 | . . 3 ⊢ (8 gcd 4) = (8 gcd ((;52 · 8) + 4)) |
| 8 | 4nn0 12618 | . . . . . . 7 ⊢ 4 ∈ ℕ0 | |
| 9 | 1nn0 12615 | . . . . . . 7 ⊢ 1 ∈ ℕ0 | |
| 10 | 8, 9 | deccl 12822 | . . . . . 6 ⊢ ;41 ∈ ℕ0 |
| 11 | 6nn0 12620 | . . . . . 6 ⊢ 6 ∈ ℕ0 | |
| 12 | 0nn0 12614 | . . . . . 6 ⊢ 0 ∈ ℕ0 | |
| 13 | eqid 2761 | . . . . . 6 ⊢ ;;416 = ;;416 | |
| 14 | 8 | dec0h 12834 | . . . . . 6 ⊢ 4 = ;04 |
| 15 | 1p1e2 12459 | . . . . . . 7 ⊢ (1 + 1) = 2 | |
| 16 | 10 | nn0cni 12611 | . . . . . . . 8 ⊢ ;41 ∈ ℂ |
| 17 | 16 | addridi 11490 | . . . . . . 7 ⊢ (;41 + 0) = ;41 |
| 18 | 8, 9, 15, 17 | decsuc 12843 | . . . . . 6 ⊢ ((;41 + 0) + 1) = ;42 |
| 19 | 6p4e10 12884 | . . . . . 6 ⊢ (6 + 4) = ;10 | |
| 20 | 10, 11, 12, 8, 13, 14, 18, 19 | decaddc2 12868 | . . . . 5 ⊢ (;;416 + 4) = ;;420 |
| 21 | 8nn0 12622 | . . . . . . . 8 ⊢ 8 ∈ ℕ0 | |
| 22 | 2nn0 12616 | . . . . . . . 8 ⊢ 2 ∈ ℕ0 | |
| 23 | eqid 2761 | . . . . . . . 8 ⊢ ;52 = ;52 | |
| 24 | 0p1e1 12456 | . . . . . . . . 9 ⊢ (0 + 1) = 1 | |
| 25 | 8t5e40 12930 | . . . . . . . . 9 ⊢ (8 · 5) = ;40 | |
| 26 | 8, 12, 24, 25 | decsuc 12843 | . . . . . . . 8 ⊢ ((8 · 5) + 1) = ;41 |
| 27 | 8t2e16 12927 | . . . . . . . 8 ⊢ (8 · 2) = ;16 | |
| 28 | 21, 3, 22, 23, 11, 9, 26, 27 | decmul2c 12878 | . . . . . . 7 ⊢ (8 · ;52) = ;;416 |
| 29 | 1, 5 | mulcomnni 43017 | . . . . . . 7 ⊢ (8 · ;52) = (;52 · 8) |
| 30 | 28, 29 | eqtr3i 2786 | . . . . . 6 ⊢ ;;416 = (;52 · 8) |
| 31 | 30 | oveq1i 7428 | . . . . 5 ⊢ (;;416 + 4) = ((;52 · 8) + 4) |
| 32 | 20, 31 | eqtr3i 2786 | . . . 4 ⊢ ;;420 = ((;52 · 8) + 4) |
| 33 | 32 | oveq2i 7429 | . . 3 ⊢ (8 gcd ;;420) = (8 gcd ((;52 · 8) + 4)) |
| 34 | 7, 33 | eqtr4i 2787 | . 2 ⊢ (8 gcd 4) = (8 gcd ;;420) |
| 35 | 1, 2 | gcdcomnni 43018 | . . 3 ⊢ (8 gcd 4) = (4 gcd 8) |
| 36 | 4t2e8 12504 | . . . . 5 ⊢ (4 · 2) = 8 | |
| 37 | 36 | oveq2i 7429 | . . . 4 ⊢ (4 gcd (4 · 2)) = (4 gcd 8) |
| 38 | 2, 4 | gcdmultiplei 43023 | . . . 4 ⊢ (4 gcd (4 · 2)) = 4 |
| 39 | 37, 38 | eqtr3i 2786 | . . 3 ⊢ (4 gcd 8) = 4 |
| 40 | 35, 39 | eqtri 2784 | . 2 ⊢ (8 gcd 4) = 4 |
| 41 | 8, 4 | decnncl 12831 | . . . 4 ⊢ ;42 ∈ ℕ |
| 42 | 41 | decnncl2 12836 | . . 3 ⊢ ;;420 ∈ ℕ |
| 43 | 1, 42 | gcdcomnni 43018 | . 2 ⊢ (8 gcd ;;420) = (;;420 gcd 8) |
| 44 | 34, 40, 43 | 3eqtr3ri 2793 | 1 ⊢ (;;420 gcd 8) = 4 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 (class class class)co 7418 0cc0 11193 1c1 11194 + caddc 11196 · cmul 11198 2c2 12390 4c4 12392 5c5 12393 6c6 12394 8c8 12396 ;cdc 12807 gcd cgcd 16657 |
| 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 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7749 ax-cnex 11249 ax-resscn 11250 ax-1cn 11251 ax-icn 11252 ax-addcl 11253 ax-addrcl 11254 ax-mulcl 11255 ax-mulrcl 11256 ax-mulcom 11257 ax-addass 11258 ax-mulass 11259 ax-distr 11260 ax-i2m1 11261 ax-1ne0 11262 ax-1rid 11263 ax-rnegex 11264 ax-rrecex 11265 ax-cnre 11266 ax-pre-lttri 11267 ax-pre-lttrn 11268 ax-pre-ltadd 11269 ax-pre-mulgt0 11270 ax-pre-sup 11271 |
| 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 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3453 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 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7375 df-ov 7421 df-oprab 7422 df-mpo 7423 df-om 7876 df-2nd 8000 df-frecs 8292 df-wrecs 8323 df-recs 8372 df-rdg 8411 df-er 8710 df-en 8967 df-dom 8968 df-sdom 8969 df-sup 9427 df-inf 9428 df-pnf 11338 df-mnf 11339 df-xr 11340 df-ltxr 11341 df-le 11342 df-sub 11536 df-neg 11537 df-div 11967 df-nn 12329 df-2 12398 df-3 12399 df-4 12400 df-5 12401 df-6 12402 df-7 12403 df-8 12404 df-9 12405 df-n0 12600 df-z 12687 df-dec 12808 df-uz 12959 df-rp 13114 df-seq 14138 df-exp 14198 df-cj 15259 df-re 15260 df-im 15261 df-sqrt 15395 df-abs 15396 df-dvds 16416 df-gcd 16658 |
| This theorem is used by: 420lcm8e840 43041 |
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