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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 12632 | . . . 4 ⊢ 1 ∈ ℕ0 | |
| 2 | 3nn0 12634 | . . . 4 ⊢ 3 ∈ ℕ0 | |
| 3 | 1le3 12567 | . . . 4 ⊢ 1 ≤ 3 | |
| 4 | elfz2nn0 13762 | . . . 4 ⊢ (1 ∈ (0...3) ↔ (1 ∈ ℕ0 ∧ 3 ∈ ℕ0 ∧ 1 ≤ 3)) | |
| 5 | 1, 2, 3, 4 | mpbir3an 1360 | . . 3 ⊢ 1 ∈ (0...3) |
| 6 | fzsplit 13694 | . . 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 12871 | . . . . 5 ⊢ 1 = (0 + 1) | |
| 9 | 8 | oveq2i 7438 | . . . 4 ⊢ (0...1) = (0...(0 + 1)) |
| 10 | 0z 12714 | . . . . 5 ⊢ 0 ∈ ℤ | |
| 11 | fzpr 13723 | . . . . 5 ⊢ (0 ∈ ℤ → (0...(0 + 1)) = {0, (0 + 1)}) | |
| 12 | 10, 11 | ax-mp 5 | . . . 4 ⊢ (0...(0 + 1)) = {0, (0 + 1)} |
| 13 | 0p1e1 12473 | . . . . 5 ⊢ (0 + 1) = 1 | |
| 14 | 13 | preq2i 4697 | . . . 4 ⊢ {0, (0 + 1)} = {0, 1} |
| 15 | 9, 12, 14 | 3eqtri 2790 | . . 3 ⊢ (0...1) = {0, 1} |
| 16 | 1p1e2 12476 | . . . . 5 ⊢ (1 + 1) = 2 | |
| 17 | df-3 12416 | . . . . 5 ⊢ 3 = (2 + 1) | |
| 18 | 16, 17 | oveq12i 7439 | . . . 4 ⊢ ((1 + 1)...3) = (2...(2 + 1)) |
| 19 | 2z 12738 | . . . . 5 ⊢ 2 ∈ ℤ | |
| 20 | fzpr 13723 | . . . . 5 ⊢ (2 ∈ ℤ → (2...(2 + 1)) = {2, (2 + 1)}) | |
| 21 | 19, 20 | ax-mp 5 | . . . 4 ⊢ (2...(2 + 1)) = {2, (2 + 1)} |
| 22 | 2p1e3 12494 | . . . . 5 ⊢ (2 + 1) = 3 | |
| 23 | 22 | preq2i 4697 | . . . 4 ⊢ {2, (2 + 1)} = {2, 3} |
| 24 | 18, 21, 23 | 3eqtri 2790 | . . 3 ⊢ ((1 + 1)...3) = {2, 3} |
| 25 | 15, 24 | uneq12i 4167 | . 2 ⊢ ((0...1) ∪ ((1 + 1)...3)) = ({0, 1} ∪ {2, 3}) |
| 26 | 7, 25 | eqtri 2786 | 1 ⊢ (0...3) = ({0, 1} ∪ {2, 3}) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1569 ∈ wcel 2146 ∪ cun 4151 {cpr 4589 class class class wbr 5105 (class class class)co 7427 0cc0 11210 1c1 11211 + caddc 11213 ≤ cle 11354 2c2 12407 3c3 12408 ℕ0cn0 12616 ℤcz 12703 ...cfz 13649 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1944 ax-6 2001 ax-7 2042 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2196 ax-12 2215 ax-ext 2735 ax-sep 5251 ax-nul 5262 ax-pow 5330 ax-pr 5394 ax-un 7758 ax-cnex 11266 ax-resscn 11267 ax-1cn 11268 ax-icn 11269 ax-addcl 11270 ax-addrcl 11271 ax-mulcl 11272 ax-mulrcl 11273 ax-mulcom 11274 ax-addass 11275 ax-mulass 11276 ax-distr 11277 ax-i2m1 11278 ax-1ne0 11279 ax-1rid 11280 ax-rnegex 11281 ax-rrecex 11282 ax-cnre 11283 ax-pre-lttri 11284 ax-pre-lttrn 11285 ax-pre-ltadd 11286 ax-pre-mulgt0 11287 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2101 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3065 df-ral 3080 df-rex 3090 df-reu 3369 df-rab 3416 df-v 3455 df-sbc 3742 df-csb 3851 df-ss 3900 df-pss 4016 df-dif 4049 df-in 4093 df-un 4153 df-nul 4281 df-if 4485 df-pw 4561 df-sn 4588 df-pr 4590 df-op 4838 df-uni 4870 df-iun 4955 df-br 5106 df-opab 5170 df-mpt 5189 df-tr 5215 df-id 5549 df-eprel 5554 df-po 5562 df-so 5563 df-fr 5607 df-we 5609 df-xp 5660 df-rel 5661 df-cnv 5662 df-co 5663 df-dm 5664 df-rn 5665 df-res 5666 df-ima 5667 df-pred 6310 df-ord 6371 df-on 6372 df-lim 6373 df-suc 6374 df-iota 6500 df-fun 6548 df-fn 6549 df-f 6550 df-f1 6551 df-fo 6552 df-f1o 6553 df-fv 6554 df-riota 7384 df-ov 7430 df-oprab 7431 df-mpo 7432 df-om 7885 df-1st 8008 df-2nd 8009 df-frecs 8310 df-wrecs 8341 df-recs 8390 df-rdg 8429 df-er 8728 df-en 8985 df-dom 8986 df-sdom 8987 df-pnf 11355 df-mnf 11356 df-xr 11357 df-ltxr 11358 df-le 11359 df-sub 11553 df-neg 11554 df-nn 12346 df-2 12415 df-3 12416 df-n0 12617 df-z 12704 df-uz 12976 df-fz 13650 |
| This theorem is used by: iblcnlem1 26120 3wlkdlem4 30775 ply1dg3rt0irred 34169 |
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