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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 12296 | . . . 4 ⊢ (2 + 1) = 3 | |
| 2 | 0z 12513 | . . . . 5 ⊢ 0 ∈ ℤ | |
| 3 | 3z 12538 | . . . . 5 ⊢ 3 ∈ ℤ | |
| 4 | 0re 11148 | . . . . . 6 ⊢ 0 ∈ ℝ | |
| 5 | 3re 12239 | . . . . . 6 ⊢ 3 ∈ ℝ | |
| 6 | 3pos 12264 | . . . . . 6 ⊢ 0 < 3 | |
| 7 | 4, 5, 6 | ltleii 11270 | . . . . 5 ⊢ 0 ≤ 3 |
| 8 | eluz2 12771 | . . . . 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 12537 | . . . 4 ⊢ 2 ∈ ℤ | |
| 12 | 4z 12539 | . . . 4 ⊢ 4 ∈ ℤ | |
| 13 | 2re 12233 | . . . . 5 ⊢ 2 ∈ ℝ | |
| 14 | 4re 12243 | . . . . 5 ⊢ 4 ∈ ℝ | |
| 15 | 2lt4 12329 | . . . . 5 ⊢ 2 < 4 | |
| 16 | 13, 14, 15 | ltleii 11270 | . . . 4 ⊢ 2 ≤ 4 |
| 17 | eluz2 12771 | . . . 4 ⊢ (4 ∈ (ℤ≥‘2) ↔ (2 ∈ ℤ ∧ 4 ∈ ℤ ∧ 2 ≤ 4)) | |
| 18 | 11, 12, 16, 17 | mpbir3an 1343 | . . 3 ⊢ 4 ∈ (ℤ≥‘2) |
| 19 | fzsplit2 13479 | . . 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 13558 | . . 3 ⊢ (0...2) = {0, 1, 2} | |
| 22 | 1 | oveq1i 7380 | . . . 4 ⊢ ((2 + 1)...4) = (3...4) |
| 23 | df-4 12224 | . . . . . 6 ⊢ 4 = (3 + 1) | |
| 24 | 23 | oveq2i 7381 | . . . . 5 ⊢ (3...4) = (3...(3 + 1)) |
| 25 | fzpr 13509 | . . . . . 6 ⊢ (3 ∈ ℤ → (3...(3 + 1)) = {3, (3 + 1)}) | |
| 26 | 3, 25 | ax-mp 5 | . . . . 5 ⊢ (3...(3 + 1)) = {3, (3 + 1)} |
| 27 | 3p1e4 12299 | . . . . . 6 ⊢ (3 + 1) = 4 | |
| 28 | 27 | preq2i 4696 | . . . . 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 4120 | . 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 3901 {cpr 4584 {ctp 4586 class class class wbr 5100 ‘cfv 6502 (class class class)co 7370 0cc0 11040 1c1 11041 + caddc 11043 ≤ cle 11181 2c2 12214 3c3 12215 4c4 12216 ℤcz 12502 ℤ≥cuz 12765 ...cfz 13437 |
| 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 5245 ax-nul 5255 ax-pow 5314 ax-pr 5381 ax-un 7692 ax-cnex 11096 ax-resscn 11097 ax-1cn 11098 ax-icn 11099 ax-addcl 11100 ax-addrcl 11101 ax-mulcl 11102 ax-mulrcl 11103 ax-mulcom 11104 ax-addass 11105 ax-mulass 11106 ax-distr 11107 ax-i2m1 11108 ax-1ne0 11109 ax-1rid 11110 ax-rnegex 11111 ax-rrecex 11112 ax-cnre 11113 ax-pre-lttri 11114 ax-pre-lttrn 11115 ax-pre-ltadd 11116 ax-pre-mulgt0 11117 |
| 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 3063 df-reu 3353 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-tp 4587 df-op 4589 df-uni 4866 df-iun 4950 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5529 df-eprel 5534 df-po 5542 df-so 5543 df-fr 5587 df-we 5589 df-xp 5640 df-rel 5641 df-cnv 5642 df-co 5643 df-dm 5644 df-rn 5645 df-res 5646 df-ima 5647 df-pred 6269 df-ord 6330 df-on 6331 df-lim 6332 df-suc 6333 df-iota 6458 df-fun 6504 df-fn 6505 df-f 6506 df-f1 6507 df-fo 6508 df-f1o 6509 df-fv 6510 df-riota 7327 df-ov 7373 df-oprab 7374 df-mpo 7375 df-om 7821 df-1st 7945 df-2nd 7946 df-frecs 8235 df-wrecs 8266 df-recs 8315 df-rdg 8353 df-er 8647 df-en 8898 df-dom 8899 df-sdom 8900 df-pnf 11182 df-mnf 11183 df-xr 11184 df-ltxr 11185 df-le 11186 df-sub 11380 df-neg 11381 df-nn 12160 df-2 12222 df-3 12223 df-4 12224 df-n0 12416 df-z 12503 df-uz 12766 df-fz 13438 |
| This theorem is referenced by: prm23lt5 16756 usgrexmplvtx 29352 |
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