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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 12384 | . . . 4 ⊢ (2 + 1) = 3 | |
| 2 | 0z 12604 | . . . . 5 ⊢ 0 ∈ ℤ | |
| 3 | 3z 12629 | . . . . 5 ⊢ 3 ∈ ℤ | |
| 4 | 0re 11212 | . . . . . 6 ⊢ 0 ∈ ℝ | |
| 5 | 3re 12323 | . . . . . 6 ⊢ 3 ∈ ℝ | |
| 6 | 3pos 12351 | . . . . . 6 ⊢ 0 < 3 | |
| 7 | 4, 5, 6 | ltleii 11335 | . . . . 5 ⊢ 0 ≤ 3 |
| 8 | eluz2 12870 | . . . . 5 ⊢ (3 ∈ (ℤ≥‘0) ↔ (0 ∈ ℤ ∧ 3 ∈ ℤ ∧ 0 ≤ 3)) | |
| 9 | 2, 3, 7, 8 | mpbir3an 1358 | . . . 4 ⊢ 3 ∈ (ℤ≥‘0) |
| 10 | 1, 9 | eqeltri 2865 | . . 3 ⊢ (2 + 1) ∈ (ℤ≥‘0) |
| 11 | 2z 12628 | . . . 4 ⊢ 2 ∈ ℤ | |
| 12 | 4z 12630 | . . . 4 ⊢ 4 ∈ ℤ | |
| 13 | 2re 12317 | . . . . 5 ⊢ 2 ∈ ℝ | |
| 14 | 4re 12327 | . . . . 5 ⊢ 4 ∈ ℝ | |
| 15 | 2lt4 12420 | . . . . 5 ⊢ 2 < 4 | |
| 16 | 13, 14, 15 | ltleii 11335 | . . . 4 ⊢ 2 ≤ 4 |
| 17 | eluz2 12870 | . . . 4 ⊢ (4 ∈ (ℤ≥‘2) ↔ (2 ∈ ℤ ∧ 4 ∈ ℤ ∧ 2 ≤ 4)) | |
| 18 | 11, 12, 16, 17 | mpbir3an 1358 | . . 3 ⊢ 4 ∈ (ℤ≥‘2) |
| 19 | fzsplit2 13579 | . . 3 ⊢ (((2 + 1) ∈ (ℤ≥‘0) ∧ 4 ∈ (ℤ≥‘2)) → (0...4) = ((0...2) ∪ ((2 + 1)...4))) | |
| 20 | 10, 18, 19 | mp2an 704 | . 2 ⊢ (0...4) = ((0...2) ∪ ((2 + 1)...4)) |
| 21 | fz0tp 13658 | . . 3 ⊢ (0...2) = {0, 1, 2} | |
| 22 | 1 | oveq1i 7423 | . . . 4 ⊢ ((2 + 1)...4) = (3...4) |
| 23 | df-4 12307 | . . . . . 6 ⊢ 4 = (3 + 1) | |
| 24 | 23 | oveq2i 7424 | . . . . 5 ⊢ (3...4) = (3...(3 + 1)) |
| 25 | fzpr 13609 | . . . . . 6 ⊢ (3 ∈ ℤ → (3...(3 + 1)) = {3, (3 + 1)}) | |
| 26 | 3, 25 | ax-mp 5 | . . . . 5 ⊢ (3...(3 + 1)) = {3, (3 + 1)} |
| 27 | 3p1e4 12387 | . . . . . 6 ⊢ (3 + 1) = 4 | |
| 28 | 27 | preq2i 4708 | . . . . 5 ⊢ {3, (3 + 1)} = {3, 4} |
| 29 | 24, 26, 28 | 3eqtri 2796 | . . . 4 ⊢ (3...4) = {3, 4} |
| 30 | 22, 29 | eqtri 2792 | . . 3 ⊢ ((2 + 1)...4) = {3, 4} |
| 31 | 21, 30 | uneq12i 4128 | . 2 ⊢ ((0...2) ∪ ((2 + 1)...4)) = ({0, 1, 2} ∪ {3, 4}) |
| 32 | 20, 31 | eqtri 2792 | 1 ⊢ (0...4) = ({0, 1, 2} ∪ {3, 4}) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1567 ∈ wcel 2149 ∪ cun 3911 {cpr 4596 {ctp 4598 class class class wbr 5113 ‘cfv 6539 (class class class)co 7413 0cc0 11102 1c1 11103 + caddc 11105 ≤ cle 11246 2c2 12297 3c3 12298 4c4 12299 ℤcz 12593 ℤ≥cuz 12864 ...cfz 13537 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5261 ax-nul 5273 ax-pow 5339 ax-pr 5407 ax-un 7735 ax-cnex 11158 ax-resscn 11159 ax-1cn 11160 ax-icn 11161 ax-addcl 11162 ax-addrcl 11163 ax-mulcl 11164 ax-mulrcl 11165 ax-mulcom 11166 ax-addass 11167 ax-mulass 11168 ax-distr 11169 ax-i2m1 11170 ax-1ne0 11171 ax-1rid 11172 ax-rnegex 11173 ax-rrecex 11174 ax-cnre 11175 ax-pre-lttri 11176 ax-pre-lttrn 11177 ax-pre-ltadd 11178 ax-pre-mulgt0 11179 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-nel 3071 df-ral 3086 df-rex 3096 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-pss 3933 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-tp 4599 df-op 4601 df-uni 4877 df-iun 4962 df-br 5114 df-opab 5178 df-mpt 5197 df-tr 5223 df-id 5559 df-eprel 5564 df-po 5572 df-so 5573 df-fr 5617 df-we 5619 df-xp 5670 df-rel 5671 df-cnv 5672 df-co 5673 df-dm 5674 df-rn 5675 df-res 5676 df-ima 5677 df-pred 6305 df-ord 6366 df-on 6367 df-lim 6368 df-suc 6369 df-iota 6495 df-fun 6541 df-fn 6542 df-f 6543 df-f1 6544 df-fo 6545 df-f1o 6546 df-fv 6547 df-riota 7370 df-ov 7416 df-oprab 7417 df-mpo 7418 df-om 7865 df-1st 7988 df-2nd 7989 df-frecs 8280 df-wrecs 8311 df-recs 8360 df-rdg 8399 df-er 8696 df-en 8946 df-dom 8947 df-sdom 8948 df-pnf 11247 df-mnf 11248 df-xr 11249 df-ltxr 11250 df-le 11251 df-sub 11445 df-neg 11446 df-nn 12236 df-2 12305 df-3 12306 df-4 12307 df-n0 12507 df-z 12594 df-uz 12865 df-fz 13538 |
| This theorem is referenced by: prm23lt5 16876 usgrexmplvtx 29554 |
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