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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 12484 | . . . 4 ⊢ (2 + 1) = 3 | |
| 2 | 0z 12704 | . . . . 5 ⊢ 0 ∈ ℤ | |
| 3 | 3z 12729 | . . . . 5 ⊢ 3 ∈ ℤ | |
| 4 | 0re 11310 | . . . . . 6 ⊢ 0 ∈ ℝ | |
| 5 | 3re 12423 | . . . . . 6 ⊢ 3 ∈ ℝ | |
| 6 | 3pos 12451 | . . . . . 6 ⊢ 0 < 3 | |
| 7 | 4, 5, 6 | ltleii 11433 | . . . . 5 ⊢ 0 ≤ 3 |
| 8 | eluz2 12971 | . . . . 5 ⊢ (3 ∈ (ℤ≥‘0) ↔ (0 ∈ ℤ ∧ 3 ∈ ℤ ∧ 0 ≤ 3)) | |
| 9 | 2, 3, 7, 8 | mpbir3an 1360 | . . . 4 ⊢ 3 ∈ (ℤ≥‘0) |
| 10 | 1, 9 | eqeltri 2856 | . . 3 ⊢ (2 + 1) ∈ (ℤ≥‘0) |
| 11 | 2z 12728 | . . . 4 ⊢ 2 ∈ ℤ | |
| 12 | 4z 12730 | . . . 4 ⊢ 4 ∈ ℤ | |
| 13 | 2re 12417 | . . . . 5 ⊢ 2 ∈ ℝ | |
| 14 | 4re 12427 | . . . . 5 ⊢ 4 ∈ ℝ | |
| 15 | 2lt4 12520 | . . . . 5 ⊢ 2 < 4 | |
| 16 | 13, 14, 15 | ltleii 11433 | . . . 4 ⊢ 2 ≤ 4 |
| 17 | eluz2 12971 | . . . 4 ⊢ (4 ∈ (ℤ≥‘2) ↔ (2 ∈ ℤ ∧ 4 ∈ ℤ ∧ 2 ≤ 4)) | |
| 18 | 11, 12, 16, 17 | mpbir3an 1360 | . . 3 ⊢ 4 ∈ (ℤ≥‘2) |
| 19 | fzsplit2 13683 | . . 3 ⊢ (((2 + 1) ∈ (ℤ≥‘0) ∧ 4 ∈ (ℤ≥‘2)) → (0...4) = ((0...2) ∪ ((2 + 1)...4))) | |
| 20 | 10, 18, 19 | mp2an 705 | . 2 ⊢ (0...4) = ((0...2) ∪ ((2 + 1)...4)) |
| 21 | fz0tp 13762 | . . 3 ⊢ (0...2) = {0, 1, 2} | |
| 22 | 1 | oveq1i 7430 | . . . 4 ⊢ ((2 + 1)...4) = (3...4) |
| 23 | df-4 12407 | . . . . . 6 ⊢ 4 = (3 + 1) | |
| 24 | 23 | oveq2i 7431 | . . . . 5 ⊢ (3...4) = (3...(3 + 1)) |
| 25 | fzpr 13713 | . . . . . 6 ⊢ (3 ∈ ℤ → (3...(3 + 1)) = {3, (3 + 1)}) | |
| 26 | 3, 25 | ax-mp 5 | . . . . 5 ⊢ (3...(3 + 1)) = {3, (3 + 1)} |
| 27 | 3p1e4 12487 | . . . . . 6 ⊢ (3 + 1) = 4 | |
| 28 | 27 | preq2i 4697 | . . . . 5 ⊢ {3, (3 + 1)} = {3, 4} |
| 29 | 24, 26, 28 | 3eqtri 2787 | . . . 4 ⊢ (3...4) = {3, 4} |
| 30 | 22, 29 | eqtri 2783 | . . 3 ⊢ ((2 + 1)...4) = {3, 4} |
| 31 | 21, 30 | uneq12i 4165 | . 2 ⊢ ((0...2) ∪ ((2 + 1)...4)) = ({0, 1, 2} ∪ {3, 4}) |
| 32 | 20, 31 | eqtri 2783 | 1 ⊢ (0...4) = ({0, 1, 2} ∪ {3, 4}) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1569 ∈ wcel 2144 ∪ cun 4149 {cpr 4585 {ctp 4587 class class class wbr 5102 ‘cfv 6538 (class class class)co 7420 0cc0 11200 1c1 11201 + caddc 11203 ≤ cle 11344 2c2 12397 3c3 12398 4c4 12399 ℤcz 12693 ℤ≥cuz 12965 ...cfz 13639 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 ax-cnex 11256 ax-resscn 11257 ax-1cn 11258 ax-icn 11259 ax-addcl 11260 ax-addrcl 11261 ax-mulcl 11262 ax-mulrcl 11263 ax-mulcom 11264 ax-addass 11265 ax-mulass 11266 ax-distr 11267 ax-i2m1 11268 ax-1ne0 11269 ax-1rid 11270 ax-rnegex 11271 ax-rrecex 11272 ax-cnre 11273 ax-pre-lttri 11274 ax-pre-lttrn 11275 ax-pre-ltadd 11276 ax-pre-mulgt0 11277 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-pss 4014 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-tp 4588 df-op 4590 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7377 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7878 df-1st 8001 df-2nd 8002 df-frecs 8299 df-wrecs 8330 df-recs 8379 df-rdg 8418 df-er 8717 df-en 8974 df-dom 8975 df-sdom 8976 df-pnf 11345 df-mnf 11346 df-xr 11347 df-ltxr 11348 df-le 11349 df-sub 11543 df-neg 11544 df-nn 12336 df-2 12405 df-3 12406 df-4 12407 df-n0 12607 df-z 12694 df-uz 12966 df-fz 13640 |
| This theorem is used by: prm23lt5 16992 usgrexmplvtx 29842 |
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