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| Mirrors > Home > ILE Home > Th. List > fz0to3un2pr | 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 9512 | . . . 4 ⊢ 1 ∈ ℕ0 | |
| 2 | 3nn0 9514 | . . . 4 ⊢ 3 ∈ ℕ0 | |
| 3 | 1le3 9449 | . . . 4 ⊢ 1 ≤ 3 | |
| 4 | elfz2nn0 10446 | . . . 4 ⊢ (1 ∈ (0...3) ↔ (1 ∈ ℕ0 ∧ 3 ∈ ℕ0 ∧ 1 ≤ 3)) | |
| 5 | 1, 2, 3, 4 | mpbir3an 1206 | . . 3 ⊢ 1 ∈ (0...3) |
| 6 | fzsplit 10385 | . . 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 9750 | . . . . 5 ⊢ 1 = (0 + 1) | |
| 9 | 8 | oveq2i 6061 | . . . 4 ⊢ (0...1) = (0...(0 + 1)) |
| 10 | 0z 9588 | . . . . 5 ⊢ 0 ∈ ℤ | |
| 11 | fzpr 10411 | . . . . 5 ⊢ (0 ∈ ℤ → (0...(0 + 1)) = {0, (0 + 1)}) | |
| 12 | 10, 11 | ax-mp 5 | . . . 4 ⊢ (0...(0 + 1)) = {0, (0 + 1)} |
| 13 | 0p1e1 9351 | . . . . 5 ⊢ (0 + 1) = 1 | |
| 14 | 13 | preq2i 3772 | . . . 4 ⊢ {0, (0 + 1)} = {0, 1} |
| 15 | 9, 12, 14 | 3eqtri 2257 | . . 3 ⊢ (0...1) = {0, 1} |
| 16 | 1p1e2 9354 | . . . . 5 ⊢ (1 + 1) = 2 | |
| 17 | df-3 9297 | . . . . 5 ⊢ 3 = (2 + 1) | |
| 18 | 16, 17 | oveq12i 6062 | . . . 4 ⊢ ((1 + 1)...3) = (2...(2 + 1)) |
| 19 | 2z 9605 | . . . . 5 ⊢ 2 ∈ ℤ | |
| 20 | fzpr 10411 | . . . . 5 ⊢ (2 ∈ ℤ → (2...(2 + 1)) = {2, (2 + 1)}) | |
| 21 | 19, 20 | ax-mp 5 | . . . 4 ⊢ (2...(2 + 1)) = {2, (2 + 1)} |
| 22 | 2p1e3 9371 | . . . . 5 ⊢ (2 + 1) = 3 | |
| 23 | 22 | preq2i 3772 | . . . 4 ⊢ {2, (2 + 1)} = {2, 3} |
| 24 | 18, 21, 23 | 3eqtri 2257 | . . 3 ⊢ ((1 + 1)...3) = {2, 3} |
| 25 | 15, 24 | uneq12i 3371 | . 2 ⊢ ((0...1) ∪ ((1 + 1)...3)) = ({0, 1} ∪ {2, 3}) |
| 26 | 7, 25 | eqtri 2253 | 1 ⊢ (0...3) = ({0, 1} ∪ {2, 3}) |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1398 ∈ wcel 2203 ∪ cun 3209 {cpr 3690 class class class wbr 4109 (class class class)co 6050 0cc0 8127 1c1 8128 + caddc 8130 ≤ cle 8309 2c2 9288 3c3 9289 ℕ0cn0 9496 ℤcz 9577 ...cfz 10342 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2205 ax-14 2206 ax-ext 2214 ax-sep 4228 ax-pow 4287 ax-pr 4322 ax-un 4554 ax-setind 4659 ax-cnex 8218 ax-resscn 8219 ax-1cn 8220 ax-1re 8221 ax-icn 8222 ax-addcl 8223 ax-addrcl 8224 ax-mulcl 8225 ax-addcom 8227 ax-addass 8229 ax-distr 8231 ax-i2m1 8232 ax-0lt1 8233 ax-0id 8235 ax-rnegex 8236 ax-cnre 8238 ax-pre-ltirr 8239 ax-pre-ltwlin 8240 ax-pre-lttrn 8241 ax-pre-apti 8242 ax-pre-ltadd 8243 |
| This theorem depends on definitions: df-bi 117 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2083 df-mo 2084 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ne 2413 df-nel 2508 df-ral 2525 df-rex 2526 df-reu 2527 df-rab 2529 df-v 2815 df-sbc 3043 df-dif 3213 df-un 3215 df-in 3217 df-ss 3224 df-pw 3671 df-sn 3695 df-pr 3696 df-op 3698 df-uni 3915 df-int 3950 df-br 4110 df-opab 4172 df-mpt 4173 df-id 4414 df-xp 4755 df-rel 4756 df-cnv 4757 df-co 4758 df-dm 4759 df-rn 4760 df-res 4761 df-ima 4762 df-iota 5312 df-fun 5354 df-fn 5355 df-f 5356 df-fv 5360 df-riota 6003 df-ov 6053 df-oprab 6054 df-mpo 6055 df-pnf 8310 df-mnf 8311 df-xr 8312 df-ltxr 8313 df-le 8314 df-sub 8446 df-neg 8447 df-inn 9238 df-2 9296 df-3 9297 df-n0 9497 df-z 9578 df-uz 9854 df-fz 10343 |
| This theorem is referenced by: (None) |
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