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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 12286 | . . . 4 ⊢ (2 + 1) = 3 | |
| 2 | 0z 12503 | . . . . 5 ⊢ 0 ∈ ℤ | |
| 3 | 3z 12528 | . . . . 5 ⊢ 3 ∈ ℤ | |
| 4 | 0re 11138 | . . . . . 6 ⊢ 0 ∈ ℝ | |
| 5 | 3re 12229 | . . . . . 6 ⊢ 3 ∈ ℝ | |
| 6 | 3pos 12254 | . . . . . 6 ⊢ 0 < 3 | |
| 7 | 4, 5, 6 | ltleii 11260 | . . . . 5 ⊢ 0 ≤ 3 |
| 8 | eluz2 12761 | . . . . 5 ⊢ (3 ∈ (ℤ≥‘0) ↔ (0 ∈ ℤ ∧ 3 ∈ ℤ ∧ 0 ≤ 3)) | |
| 9 | 2, 3, 7, 8 | mpbir3an 1343 | . . . 4 ⊢ 3 ∈ (ℤ≥‘0) |
| 10 | 1, 9 | eqeltri 2833 | . . 3 ⊢ (2 + 1) ∈ (ℤ≥‘0) |
| 11 | 2z 12527 | . . . 4 ⊢ 2 ∈ ℤ | |
| 12 | 4z 12529 | . . . 4 ⊢ 4 ∈ ℤ | |
| 13 | 2re 12223 | . . . . 5 ⊢ 2 ∈ ℝ | |
| 14 | 4re 12233 | . . . . 5 ⊢ 4 ∈ ℝ | |
| 15 | 2lt4 12319 | . . . . 5 ⊢ 2 < 4 | |
| 16 | 13, 14, 15 | ltleii 11260 | . . . 4 ⊢ 2 ≤ 4 |
| 17 | eluz2 12761 | . . . 4 ⊢ (4 ∈ (ℤ≥‘2) ↔ (2 ∈ ℤ ∧ 4 ∈ ℤ ∧ 2 ≤ 4)) | |
| 18 | 11, 12, 16, 17 | mpbir3an 1343 | . . 3 ⊢ 4 ∈ (ℤ≥‘2) |
| 19 | fzsplit2 13469 | . . 3 ⊢ (((2 + 1) ∈ (ℤ≥‘0) ∧ 4 ∈ (ℤ≥‘2)) → (0...4) = ((0...2) ∪ ((2 + 1)...4))) | |
| 20 | 10, 18, 19 | mp2an 693 | . 2 ⊢ (0...4) = ((0...2) ∪ ((2 + 1)...4)) |
| 21 | fz0tp 13548 | . . 3 ⊢ (0...2) = {0, 1, 2} | |
| 22 | 1 | oveq1i 7370 | . . . 4 ⊢ ((2 + 1)...4) = (3...4) |
| 23 | df-4 12214 | . . . . . 6 ⊢ 4 = (3 + 1) | |
| 24 | 23 | oveq2i 7371 | . . . . 5 ⊢ (3...4) = (3...(3 + 1)) |
| 25 | fzpr 13499 | . . . . . 6 ⊢ (3 ∈ ℤ → (3...(3 + 1)) = {3, (3 + 1)}) | |
| 26 | 3, 25 | ax-mp 5 | . . . . 5 ⊢ (3...(3 + 1)) = {3, (3 + 1)} |
| 27 | 3p1e4 12289 | . . . . . 6 ⊢ (3 + 1) = 4 | |
| 28 | 27 | preq2i 4695 | . . . . 5 ⊢ {3, (3 + 1)} = {3, 4} |
| 29 | 24, 26, 28 | 3eqtri 2764 | . . . 4 ⊢ (3...4) = {3, 4} |
| 30 | 22, 29 | eqtri 2760 | . . 3 ⊢ ((2 + 1)...4) = {3, 4} |
| 31 | 21, 30 | uneq12i 4119 | . 2 ⊢ ((0...2) ∪ ((2 + 1)...4)) = ({0, 1, 2} ∪ {3, 4}) |
| 32 | 20, 31 | eqtri 2760 | 1 ⊢ (0...4) = ({0, 1, 2} ∪ {3, 4}) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 ∈ wcel 2114 ∪ cun 3900 {cpr 4583 {ctp 4585 class class class wbr 5099 ‘cfv 6493 (class class class)co 7360 0cc0 11030 1c1 11031 + caddc 11033 ≤ cle 11171 2c2 12204 3c3 12205 4c4 12206 ℤcz 12492 ℤ≥cuz 12755 ...cfz 13427 |
| 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 5242 ax-nul 5252 ax-pow 5311 ax-pr 5378 ax-un 7682 ax-cnex 11086 ax-resscn 11087 ax-1cn 11088 ax-icn 11089 ax-addcl 11090 ax-addrcl 11091 ax-mulcl 11092 ax-mulrcl 11093 ax-mulcom 11094 ax-addass 11095 ax-mulass 11096 ax-distr 11097 ax-i2m1 11098 ax-1ne0 11099 ax-1rid 11100 ax-rnegex 11101 ax-rrecex 11102 ax-cnre 11103 ax-pre-lttri 11104 ax-pre-lttrn 11105 ax-pre-ltadd 11106 ax-pre-mulgt0 11107 |
| 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 3062 df-reu 3352 df-rab 3401 df-v 3443 df-sbc 3742 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4287 df-if 4481 df-pw 4557 df-sn 4582 df-pr 4584 df-tp 4586 df-op 4588 df-uni 4865 df-iun 4949 df-br 5100 df-opab 5162 df-mpt 5181 df-tr 5207 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-pred 6260 df-ord 6321 df-on 6322 df-lim 6323 df-suc 6324 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-riota 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-om 7811 df-1st 7935 df-2nd 7936 df-frecs 8225 df-wrecs 8256 df-recs 8305 df-rdg 8343 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-nn 12150 df-2 12212 df-3 12213 df-4 12214 df-n0 12406 df-z 12493 df-uz 12756 df-fz 13428 |
| This theorem is referenced by: prm23lt5 16746 usgrexmplvtx 29338 |
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