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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 12448 | . . . 4 ⊢ 1 ∈ ℕ0 | |
| 2 | 3nn0 12450 | . . . 4 ⊢ 3 ∈ ℕ0 | |
| 3 | 1le3 12383 | . . . 4 ⊢ 1 ≤ 3 | |
| 4 | elfz2nn0 13567 | . . . 4 ⊢ (1 ∈ (0...3) ↔ (1 ∈ ℕ0 ∧ 3 ∈ ℕ0 ∧ 1 ≤ 3)) | |
| 5 | 1, 2, 3, 4 | mpbir3an 1349 | . . 3 ⊢ 1 ∈ (0...3) |
| 6 | fzsplit 13499 | . . 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 12681 | . . . . 5 ⊢ 1 = (0 + 1) | |
| 9 | 8 | oveq2i 7370 | . . . 4 ⊢ (0...1) = (0...(0 + 1)) |
| 10 | 0z 12530 | . . . . 5 ⊢ 0 ∈ ℤ | |
| 11 | fzpr 13528 | . . . . 5 ⊢ (0 ∈ ℤ → (0...(0 + 1)) = {0, (0 + 1)}) | |
| 12 | 10, 11 | ax-mp 5 | . . . 4 ⊢ (0...(0 + 1)) = {0, (0 + 1)} |
| 13 | 0p1e1 12293 | . . . . 5 ⊢ (0 + 1) = 1 | |
| 14 | 13 | preq2i 4671 | . . . 4 ⊢ {0, (0 + 1)} = {0, 1} |
| 15 | 9, 12, 14 | 3eqtri 2768 | . . 3 ⊢ (0...1) = {0, 1} |
| 16 | 1p1e2 12296 | . . . . 5 ⊢ (1 + 1) = 2 | |
| 17 | df-3 12240 | . . . . 5 ⊢ 3 = (2 + 1) | |
| 18 | 16, 17 | oveq12i 7371 | . . . 4 ⊢ ((1 + 1)...3) = (2...(2 + 1)) |
| 19 | 2z 12554 | . . . . 5 ⊢ 2 ∈ ℤ | |
| 20 | fzpr 13528 | . . . . 5 ⊢ (2 ∈ ℤ → (2...(2 + 1)) = {2, (2 + 1)}) | |
| 21 | 19, 20 | ax-mp 5 | . . . 4 ⊢ (2...(2 + 1)) = {2, (2 + 1)} |
| 22 | 2p1e3 12313 | . . . . 5 ⊢ (2 + 1) = 3 | |
| 23 | 22 | preq2i 4671 | . . . 4 ⊢ {2, (2 + 1)} = {2, 3} |
| 24 | 18, 21, 23 | 3eqtri 2768 | . . 3 ⊢ ((1 + 1)...3) = {2, 3} |
| 25 | 15, 24 | uneq12i 4098 | . 2 ⊢ ((0...1) ∪ ((1 + 1)...3)) = ({0, 1} ∪ {2, 3}) |
| 26 | 7, 25 | eqtri 2764 | 1 ⊢ (0...3) = ({0, 1} ∪ {2, 3}) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1548 ∈ wcel 2121 ∪ cun 3882 {cpr 4559 class class class wbr 5074 (class class class)co 7359 0cc0 11034 1c1 11035 + caddc 11037 ≤ cle 11176 2c2 12231 3c3 12232 ℕ0cn0 12432 ℤcz 12519 ...cfz 13456 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-sep 5220 ax-nul 5230 ax-pow 5296 ax-pr 5364 ax-un 7681 ax-cnex 11090 ax-resscn 11091 ax-1cn 11092 ax-icn 11093 ax-addcl 11094 ax-addrcl 11095 ax-mulcl 11096 ax-mulrcl 11097 ax-mulcom 11098 ax-addass 11099 ax-mulass 11100 ax-distr 11101 ax-i2m1 11102 ax-1ne0 11103 ax-1rid 11104 ax-rnegex 11105 ax-rrecex 11106 ax-cnre 11107 ax-pre-lttri 11108 ax-pre-lttrn 11109 ax-pre-ltadd 11110 ax-pre-mulgt0 11111 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3or 1094 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ne 2937 df-nel 3041 df-ral 3056 df-rex 3066 df-reu 3347 df-rab 3394 df-v 3435 df-sbc 3725 df-csb 3833 df-dif 3887 df-un 3889 df-in 3891 df-ss 3901 df-pss 3904 df-nul 4264 df-if 4457 df-pw 4533 df-sn 4558 df-pr 4560 df-op 4564 df-uni 4841 df-iun 4925 df-br 5075 df-opab 5137 df-mpt 5156 df-tr 5182 df-id 5515 df-eprel 5520 df-po 5528 df-so 5529 df-fr 5573 df-we 5575 df-xp 5626 df-rel 5627 df-cnv 5628 df-co 5629 df-dm 5630 df-rn 5631 df-res 5632 df-ima 5633 df-pred 6255 df-ord 6316 df-on 6317 df-lim 6318 df-suc 6319 df-iota 6444 df-fun 6490 df-fn 6491 df-f 6492 df-f1 6493 df-fo 6494 df-f1o 6495 df-fv 6496 df-riota 7316 df-ov 7362 df-oprab 7363 df-mpo 7364 df-om 7810 df-1st 7933 df-2nd 7934 df-frecs 8224 df-wrecs 8255 df-recs 8304 df-rdg 8343 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-pnf 11177 df-mnf 11178 df-xr 11179 df-ltxr 11180 df-le 11181 df-sub 11375 df-neg 11376 df-nn 12170 df-2 12239 df-3 12240 df-n0 12433 df-z 12520 df-uz 12784 df-fz 13457 |
| This theorem is referenced by: iblcnlem1 25776 3wlkdlem4 30252 ply1dg3rt0irred 33677 |
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