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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 12429 | . . . 4 ⊢ 1 ∈ ℕ0 | |
| 2 | 3nn0 12431 | . . . 4 ⊢ 3 ∈ ℕ0 | |
| 3 | 1le3 12364 | . . . 4 ⊢ 1 ≤ 3 | |
| 4 | elfz2nn0 13546 | . . . 4 ⊢ (1 ∈ (0...3) ↔ (1 ∈ ℕ0 ∧ 3 ∈ ℕ0 ∧ 1 ≤ 3)) | |
| 5 | 1, 2, 3, 4 | mpbir3an 1343 | . . 3 ⊢ 1 ∈ (0...3) |
| 6 | fzsplit 13478 | . . 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 12661 | . . . . 5 ⊢ 1 = (0 + 1) | |
| 9 | 8 | oveq2i 7379 | . . . 4 ⊢ (0...1) = (0...(0 + 1)) |
| 10 | 0z 12511 | . . . . 5 ⊢ 0 ∈ ℤ | |
| 11 | fzpr 13507 | . . . . 5 ⊢ (0 ∈ ℤ → (0...(0 + 1)) = {0, (0 + 1)}) | |
| 12 | 10, 11 | ax-mp 5 | . . . 4 ⊢ (0...(0 + 1)) = {0, (0 + 1)} |
| 13 | 0p1e1 12274 | . . . . 5 ⊢ (0 + 1) = 1 | |
| 14 | 13 | preq2i 4696 | . . . 4 ⊢ {0, (0 + 1)} = {0, 1} |
| 15 | 9, 12, 14 | 3eqtri 2764 | . . 3 ⊢ (0...1) = {0, 1} |
| 16 | 1p1e2 12277 | . . . . 5 ⊢ (1 + 1) = 2 | |
| 17 | df-3 12221 | . . . . 5 ⊢ 3 = (2 + 1) | |
| 18 | 16, 17 | oveq12i 7380 | . . . 4 ⊢ ((1 + 1)...3) = (2...(2 + 1)) |
| 19 | 2z 12535 | . . . . 5 ⊢ 2 ∈ ℤ | |
| 20 | fzpr 13507 | . . . . 5 ⊢ (2 ∈ ℤ → (2...(2 + 1)) = {2, (2 + 1)}) | |
| 21 | 19, 20 | ax-mp 5 | . . . 4 ⊢ (2...(2 + 1)) = {2, (2 + 1)} |
| 22 | 2p1e3 12294 | . . . . 5 ⊢ (2 + 1) = 3 | |
| 23 | 22 | preq2i 4696 | . . . 4 ⊢ {2, (2 + 1)} = {2, 3} |
| 24 | 18, 21, 23 | 3eqtri 2764 | . . 3 ⊢ ((1 + 1)...3) = {2, 3} |
| 25 | 15, 24 | uneq12i 4120 | . 2 ⊢ ((0...1) ∪ ((1 + 1)...3)) = ({0, 1} ∪ {2, 3}) |
| 26 | 7, 25 | eqtri 2760 | 1 ⊢ (0...3) = ({0, 1} ∪ {2, 3}) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 ∈ wcel 2114 ∪ cun 3901 {cpr 4584 class class class wbr 5100 (class class class)co 7368 0cc0 11038 1c1 11039 + caddc 11041 ≤ cle 11179 2c2 12212 3c3 12213 ℕ0cn0 12413 ℤcz 12500 ...cfz 13435 |
| 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 2709 ax-sep 5243 ax-nul 5253 ax-pow 5312 ax-pr 5379 ax-un 7690 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 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-reu 3353 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-iun 4950 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5527 df-eprel 5532 df-po 5540 df-so 5541 df-fr 5585 df-we 5587 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-pred 6267 df-ord 6328 df-on 6329 df-lim 6330 df-suc 6331 df-iota 6456 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-fv 6508 df-riota 7325 df-ov 7371 df-oprab 7372 df-mpo 7373 df-om 7819 df-1st 7943 df-2nd 7944 df-frecs 8233 df-wrecs 8264 df-recs 8313 df-rdg 8351 df-er 8645 df-en 8896 df-dom 8897 df-sdom 8898 df-pnf 11180 df-mnf 11181 df-xr 11182 df-ltxr 11183 df-le 11184 df-sub 11378 df-neg 11379 df-nn 12158 df-2 12220 df-3 12221 df-n0 12414 df-z 12501 df-uz 12764 df-fz 13436 |
| This theorem is referenced by: iblcnlem1 25757 3wlkdlem4 30249 ply1dg3rt0irred 33677 |
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