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Mirrors > Home > MPE Home > Th. List > dec5dvds2 | Structured version Visualization version GIF version |
Description: Divisibility by five is obvious in base 10. (Contributed by Mario Carneiro, 19-Apr-2015.) |
Ref | Expression |
---|---|
dec5dvds.1 | ⊢ 𝐴 ∈ ℕ0 |
dec5dvds.2 | ⊢ 𝐵 ∈ ℕ |
dec5dvds.3 | ⊢ 𝐵 < 5 |
dec5dvds2.4 | ⊢ (5 + 𝐵) = 𝐶 |
Ref | Expression |
---|---|
dec5dvds2 | ⊢ ¬ 5 ∥ ;𝐴𝐶 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dec5dvds.1 | . . 3 ⊢ 𝐴 ∈ ℕ0 | |
2 | dec5dvds.2 | . . 3 ⊢ 𝐵 ∈ ℕ | |
3 | dec5dvds.3 | . . 3 ⊢ 𝐵 < 5 | |
4 | 1, 2, 3 | dec5dvds 15606 | . 2 ⊢ ¬ 5 ∥ ;𝐴𝐵 |
5 | 5nn0 11189 | . . . . 5 ⊢ 5 ∈ ℕ0 | |
6 | 5 | nn0zi 11279 | . . . 4 ⊢ 5 ∈ ℤ |
7 | 2 | nnnn0i 11177 | . . . . . 6 ⊢ 𝐵 ∈ ℕ0 |
8 | 1, 7 | deccl 11388 | . . . . 5 ⊢ ;𝐴𝐵 ∈ ℕ0 |
9 | 8 | nn0zi 11279 | . . . 4 ⊢ ;𝐴𝐵 ∈ ℤ |
10 | dvdsadd 14862 | . . . 4 ⊢ ((5 ∈ ℤ ∧ ;𝐴𝐵 ∈ ℤ) → (5 ∥ ;𝐴𝐵 ↔ 5 ∥ (5 + ;𝐴𝐵))) | |
11 | 6, 9, 10 | mp2an 704 | . . 3 ⊢ (5 ∥ ;𝐴𝐵 ↔ 5 ∥ (5 + ;𝐴𝐵)) |
12 | 0nn0 11184 | . . . . 5 ⊢ 0 ∈ ℕ0 | |
13 | 5 | dec0h 11398 | . . . . 5 ⊢ 5 = ;05 |
14 | eqid 2610 | . . . . 5 ⊢ ;𝐴𝐵 = ;𝐴𝐵 | |
15 | 1 | nn0cni 11181 | . . . . . 6 ⊢ 𝐴 ∈ ℂ |
16 | 15 | addid2i 10103 | . . . . 5 ⊢ (0 + 𝐴) = 𝐴 |
17 | dec5dvds2.4 | . . . . 5 ⊢ (5 + 𝐵) = 𝐶 | |
18 | 12, 5, 1, 7, 13, 14, 16, 17 | decadd 11446 | . . . 4 ⊢ (5 + ;𝐴𝐵) = ;𝐴𝐶 |
19 | 18 | breq2i 4591 | . . 3 ⊢ (5 ∥ (5 + ;𝐴𝐵) ↔ 5 ∥ ;𝐴𝐶) |
20 | 11, 19 | bitri 263 | . 2 ⊢ (5 ∥ ;𝐴𝐵 ↔ 5 ∥ ;𝐴𝐶) |
21 | 4, 20 | mtbi 311 | 1 ⊢ ¬ 5 ∥ ;𝐴𝐶 |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 ↔ wb 195 = wceq 1475 ∈ wcel 1977 class class class wbr 4583 (class class class)co 6549 0cc0 9815 + caddc 9818 < clt 9953 ℕcn 10897 5c5 10950 ℕ0cn0 11169 ℤcz 11254 ;cdc 11369 ∥ cdvds 14821 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 ax-cnex 9871 ax-resscn 9872 ax-1cn 9873 ax-icn 9874 ax-addcl 9875 ax-addrcl 9876 ax-mulcl 9877 ax-mulrcl 9878 ax-mulcom 9879 ax-addass 9880 ax-mulass 9881 ax-distr 9882 ax-i2m1 9883 ax-1ne0 9884 ax-1rid 9885 ax-rnegex 9886 ax-rrecex 9887 ax-cnre 9888 ax-pre-lttri 9889 ax-pre-lttrn 9890 ax-pre-ltadd 9891 ax-pre-mulgt0 9892 ax-pre-sup 9893 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3or 1032 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-nel 2783 df-ral 2901 df-rex 2902 df-reu 2903 df-rmo 2904 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-pss 3556 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-tp 4130 df-op 4132 df-uni 4373 df-iun 4457 df-br 4584 df-opab 4644 df-mpt 4645 df-tr 4681 df-eprel 4949 df-id 4953 df-po 4959 df-so 4960 df-fr 4997 df-we 4999 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-pred 5597 df-ord 5643 df-on 5644 df-lim 5645 df-suc 5646 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-riota 6511 df-ov 6552 df-oprab 6553 df-mpt2 6554 df-om 6958 df-1st 7059 df-2nd 7060 df-wrecs 7294 df-recs 7355 df-rdg 7393 df-er 7629 df-en 7842 df-dom 7843 df-sdom 7844 df-sup 8231 df-inf 8232 df-pnf 9955 df-mnf 9956 df-xr 9957 df-ltxr 9958 df-le 9959 df-sub 10147 df-neg 10148 df-div 10564 df-nn 10898 df-2 10956 df-3 10957 df-4 10958 df-5 10959 df-6 10960 df-7 10961 df-8 10962 df-9 10963 df-n0 11170 df-z 11255 df-dec 11370 df-uz 11564 df-rp 11709 df-fz 12198 df-seq 12664 df-exp 12723 df-cj 13687 df-re 13688 df-im 13689 df-sqrt 13823 df-abs 13824 df-dvds 14822 |
This theorem is referenced by: 37prm 15666 139prm 15669 317prm 15671 257prm 40011 139prmALT 40049 127prm 40053 |
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