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| Mirrors > Home > MPE Home > Th. List > fz0to4untppr | Structured version Visualization version GIF version | ||
| Description: An integer range from 0 to 4 is the union of a triple and a pair. (Contributed by Alexander van der Vekens, 13-Aug-2017.) (Proof shortened by AV, 7-Aug-2025.) |
| Ref | Expression |
|---|---|
| fz0to4untppr | ⊢ (0...4) = ({0, 1, 2} ∪ {3, 4}) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2p1e3 12361 | . . . 4 ⊢ (2 + 1) = 3 | |
| 2 | 0z 12581 | . . . . 5 ⊢ 0 ∈ ℤ | |
| 3 | 3z 12606 | . . . . 5 ⊢ 3 ∈ ℤ | |
| 4 | 0re 11185 | . . . . . 6 ⊢ 0 ∈ ℝ | |
| 5 | 3re 12300 | . . . . . 6 ⊢ 3 ∈ ℝ | |
| 6 | 3pos 12328 | . . . . . 6 ⊢ 0 < 3 | |
| 7 | 4, 5, 6 | ltleii 11308 | . . . . 5 ⊢ 0 ≤ 3 |
| 8 | eluz2 12847 | . . . . 5 ⊢ (3 ∈ (ℤ≥‘0) ↔ (0 ∈ ℤ ∧ 3 ∈ ℤ ∧ 0 ≤ 3)) | |
| 9 | 2, 3, 7, 8 | mpbir3an 1356 | . . . 4 ⊢ 3 ∈ (ℤ≥‘0) |
| 10 | 1, 9 | eqeltri 2860 | . . 3 ⊢ (2 + 1) ∈ (ℤ≥‘0) |
| 11 | 2z 12605 | . . . 4 ⊢ 2 ∈ ℤ | |
| 12 | 4z 12607 | . . . 4 ⊢ 4 ∈ ℤ | |
| 13 | 2re 12294 | . . . . 5 ⊢ 2 ∈ ℝ | |
| 14 | 4re 12304 | . . . . 5 ⊢ 4 ∈ ℝ | |
| 15 | 2lt4 12397 | . . . . 5 ⊢ 2 < 4 | |
| 16 | 13, 14, 15 | ltleii 11308 | . . . 4 ⊢ 2 ≤ 4 |
| 17 | eluz2 12847 | . . . 4 ⊢ (4 ∈ (ℤ≥‘2) ↔ (2 ∈ ℤ ∧ 4 ∈ ℤ ∧ 2 ≤ 4)) | |
| 18 | 11, 12, 16, 17 | mpbir3an 1356 | . . 3 ⊢ 4 ∈ (ℤ≥‘2) |
| 19 | fzsplit2 13556 | . . 3 ⊢ (((2 + 1) ∈ (ℤ≥‘0) ∧ 4 ∈ (ℤ≥‘2)) → (0...4) = ((0...2) ∪ ((2 + 1)...4))) | |
| 20 | 10, 18, 19 | mp2an 702 | . 2 ⊢ (0...4) = ((0...2) ∪ ((2 + 1)...4)) |
| 21 | fz0tp 13635 | . . 3 ⊢ (0...2) = {0, 1, 2} | |
| 22 | 1 | oveq1i 7408 | . . . 4 ⊢ ((2 + 1)...4) = (3...4) |
| 23 | df-4 12284 | . . . . . 6 ⊢ 4 = (3 + 1) | |
| 24 | 23 | oveq2i 7409 | . . . . 5 ⊢ (3...4) = (3...(3 + 1)) |
| 25 | fzpr 13586 | . . . . . 6 ⊢ (3 ∈ ℤ → (3...(3 + 1)) = {3, (3 + 1)}) | |
| 26 | 3, 25 | ax-mp 5 | . . . . 5 ⊢ (3...(3 + 1)) = {3, (3 + 1)} |
| 27 | 3p1e4 12364 | . . . . . 6 ⊢ (3 + 1) = 4 | |
| 28 | 27 | preq2i 4698 | . . . . 5 ⊢ {3, (3 + 1)} = {3, 4} |
| 29 | 24, 26, 28 | 3eqtri 2791 | . . . 4 ⊢ (3...4) = {3, 4} |
| 30 | 22, 29 | eqtri 2787 | . . 3 ⊢ ((2 + 1)...4) = {3, 4} |
| 31 | 21, 30 | uneq12i 4121 | . 2 ⊢ ((0...2) ∪ ((2 + 1)...4)) = ({0, 1, 2} ∪ {3, 4}) |
| 32 | 20, 31 | eqtri 2787 | 1 ⊢ (0...4) = ({0, 1, 2} ∪ {3, 4}) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1562 ∈ wcel 2144 ∪ cun 3904 {cpr 4586 {ctp 4588 class class class wbr 5102 ‘cfv 6523 (class class class)co 7398 0cc0 11075 1c1 11076 + caddc 11078 ≤ cle 11219 2c2 12274 3c3 12275 4c4 12276 ℤcz 12570 ℤ≥cuz 12841 ...cfz 13514 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1817 ax-4 1831 ax-5 1932 ax-6 1989 ax-7 2030 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2214 ax-ext 2736 ax-sep 5248 ax-nul 5258 ax-pow 5324 ax-pr 5392 ax-un 7720 ax-cnex 11131 ax-resscn 11132 ax-1cn 11133 ax-icn 11134 ax-addcl 11135 ax-addrcl 11136 ax-mulcl 11137 ax-mulrcl 11138 ax-mulcom 11139 ax-addass 11140 ax-mulass 11141 ax-distr 11142 ax-i2m1 11143 ax-1ne0 11144 ax-1rid 11145 ax-rnegex 11146 ax-rrecex 11147 ax-cnre 11148 ax-pre-lttri 11149 ax-pre-lttrn 11150 ax-pre-ltadd 11151 ax-pre-mulgt0 11152 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1100 df-3an 1101 df-tru 1565 df-fal 1575 df-ex 1802 df-nf 1806 df-sb 2093 df-mo 2568 df-eu 2598 df-clab 2743 df-cleq 2756 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3064 df-ral 3079 df-rex 3089 df-reu 3370 df-rab 3417 df-v 3458 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4288 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-tp 4589 df-op 4591 df-uni 4868 df-iun 4953 df-br 5103 df-opab 5165 df-mpt 5184 df-tr 5210 df-id 5544 df-eprel 5549 df-po 5557 df-so 5558 df-fr 5602 df-we 5604 df-xp 5655 df-rel 5656 df-cnv 5657 df-co 5658 df-dm 5659 df-rn 5660 df-res 5661 df-ima 5662 df-pred 6290 df-ord 6351 df-on 6352 df-lim 6353 df-suc 6354 df-iota 6479 df-fun 6525 df-fn 6526 df-f 6527 df-f1 6528 df-fo 6529 df-f1o 6530 df-fv 6531 df-riota 7355 df-ov 7401 df-oprab 7402 df-mpo 7403 df-om 7849 df-1st 7972 df-2nd 7973 df-frecs 8264 df-wrecs 8295 df-recs 8344 df-rdg 8383 df-er 8680 df-en 8930 df-dom 8931 df-sdom 8932 df-pnf 11220 df-mnf 11221 df-xr 11222 df-ltxr 11223 df-le 11224 df-sub 11418 df-neg 11419 df-nn 12213 df-2 12282 df-3 12283 df-4 12284 df-n0 12484 df-z 12571 df-uz 12842 df-fz 13515 |
| This theorem is referenced by: prm23lt5 16852 usgrexmplvtx 29464 |
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