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| Mirrors > Home > MPE Home > Th. List > fz0to3un2pr | Structured version Visualization version GIF version | ||
| Description: An integer range from 0 to 3 is the union of two unordered pairs. (Contributed by AV, 7-Feb-2021.) |
| Ref | Expression |
|---|---|
| fz0to3un2pr | ⊢ (0...3) = ({0, 1} ∪ {2, 3}) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1nn0 12453 | . . . 4 ⊢ 1 ∈ ℕ0 | |
| 2 | 3nn0 12455 | . . . 4 ⊢ 3 ∈ ℕ0 | |
| 3 | 1le3 12388 | . . . 4 ⊢ 1 ≤ 3 | |
| 4 | elfz2nn0 13572 | . . . 4 ⊢ (1 ∈ (0...3) ↔ (1 ∈ ℕ0 ∧ 3 ∈ ℕ0 ∧ 1 ≤ 3)) | |
| 5 | 1, 2, 3, 4 | mpbir3an 1343 | . . 3 ⊢ 1 ∈ (0...3) |
| 6 | fzsplit 13504 | . . 3 ⊢ (1 ∈ (0...3) → (0...3) = ((0...1) ∪ ((1 + 1)...3))) | |
| 7 | 5, 6 | ax-mp 5 | . 2 ⊢ (0...3) = ((0...1) ∪ ((1 + 1)...3)) |
| 8 | 1e0p1 12686 | . . . . 5 ⊢ 1 = (0 + 1) | |
| 9 | 8 | oveq2i 7378 | . . . 4 ⊢ (0...1) = (0...(0 + 1)) |
| 10 | 0z 12535 | . . . . 5 ⊢ 0 ∈ ℤ | |
| 11 | fzpr 13533 | . . . . 5 ⊢ (0 ∈ ℤ → (0...(0 + 1)) = {0, (0 + 1)}) | |
| 12 | 10, 11 | ax-mp 5 | . . . 4 ⊢ (0...(0 + 1)) = {0, (0 + 1)} |
| 13 | 0p1e1 12298 | . . . . 5 ⊢ (0 + 1) = 1 | |
| 14 | 13 | preq2i 4681 | . . . 4 ⊢ {0, (0 + 1)} = {0, 1} |
| 15 | 9, 12, 14 | 3eqtri 2763 | . . 3 ⊢ (0...1) = {0, 1} |
| 16 | 1p1e2 12301 | . . . . 5 ⊢ (1 + 1) = 2 | |
| 17 | df-3 12245 | . . . . 5 ⊢ 3 = (2 + 1) | |
| 18 | 16, 17 | oveq12i 7379 | . . . 4 ⊢ ((1 + 1)...3) = (2...(2 + 1)) |
| 19 | 2z 12559 | . . . . 5 ⊢ 2 ∈ ℤ | |
| 20 | fzpr 13533 | . . . . 5 ⊢ (2 ∈ ℤ → (2...(2 + 1)) = {2, (2 + 1)}) | |
| 21 | 19, 20 | ax-mp 5 | . . . 4 ⊢ (2...(2 + 1)) = {2, (2 + 1)} |
| 22 | 2p1e3 12318 | . . . . 5 ⊢ (2 + 1) = 3 | |
| 23 | 22 | preq2i 4681 | . . . 4 ⊢ {2, (2 + 1)} = {2, 3} |
| 24 | 18, 21, 23 | 3eqtri 2763 | . . 3 ⊢ ((1 + 1)...3) = {2, 3} |
| 25 | 15, 24 | uneq12i 4106 | . 2 ⊢ ((0...1) ∪ ((1 + 1)...3)) = ({0, 1} ∪ {2, 3}) |
| 26 | 7, 25 | eqtri 2759 | 1 ⊢ (0...3) = ({0, 1} ∪ {2, 3}) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 ∈ wcel 2114 ∪ cun 3887 {cpr 4569 class class class wbr 5085 (class class class)co 7367 0cc0 11038 1c1 11039 + caddc 11041 ≤ cle 11180 2c2 12236 3c3 12237 ℕ0cn0 12437 ℤcz 12524 ...cfz 13461 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2708 ax-sep 5231 ax-nul 5241 ax-pow 5307 ax-pr 5375 ax-un 7689 ax-cnex 11094 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3062 df-reu 3343 df-rab 3390 df-v 3431 df-sbc 3729 df-csb 3838 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-pss 3909 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-iun 4935 df-br 5086 df-opab 5148 df-mpt 5167 df-tr 5193 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6265 df-ord 6326 df-on 6327 df-lim 6328 df-suc 6329 df-iota 6454 df-fun 6500 df-fn 6501 df-f 6502 df-f1 6503 df-fo 6504 df-f1o 6505 df-fv 6506 df-riota 7324 df-ov 7370 df-oprab 7371 df-mpo 7372 df-om 7818 df-1st 7942 df-2nd 7943 df-frecs 8231 df-wrecs 8262 df-recs 8311 df-rdg 8349 df-er 8643 df-en 8894 df-dom 8895 df-sdom 8896 df-pnf 11181 df-mnf 11182 df-xr 11183 df-ltxr 11184 df-le 11185 df-sub 11379 df-neg 11380 df-nn 12175 df-2 12244 df-3 12245 df-n0 12438 df-z 12525 df-uz 12789 df-fz 13462 |
| This theorem is referenced by: iblcnlem1 25755 3wlkdlem4 30232 ply1dg3rt0irred 33644 |
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