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| Mirrors > Home > MPE Home > Th. List > fzo0to42pr | Structured version Visualization version GIF version | ||
| Description: A half-open integer range from 0 to 4 is a union of two unordered pairs. (Contributed by Alexander van der Vekens, 17-Nov-2017.) |
| Ref | Expression |
|---|---|
| fzo0to42pr | ⊢ (0..^4) = ({0, 1} ∪ {2, 3}) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2nn0 12567 | . . . 4 ⊢ 2 ∈ ℕ0 | |
| 2 | 4nn0 12569 | . . . 4 ⊢ 4 ∈ ℕ0 | |
| 3 | 2re 12361 | . . . . 5 ⊢ 2 ∈ ℝ | |
| 4 | 4re 12371 | . . . . 5 ⊢ 4 ∈ ℝ | |
| 5 | 2lt4 12464 | . . . . 5 ⊢ 2 < 4 | |
| 6 | 3, 4, 5 | ltleii 11379 | . . . 4 ⊢ 2 ≤ 4 |
| 7 | elfz2nn0 13695 | . . . 4 ⊢ (2 ∈ (0...4) ↔ (2 ∈ ℕ0 ∧ 4 ∈ ℕ0 ∧ 2 ≤ 4)) | |
| 8 | 1, 2, 6, 7 | mpbir3an 1360 | . . 3 ⊢ 2 ∈ (0...4) |
| 9 | fzosplit 13770 | . . 3 ⊢ (2 ∈ (0...4) → (0..^4) = ((0..^2) ∪ (2..^4))) | |
| 10 | 8, 9 | ax-mp 5 | . 2 ⊢ (0..^4) = ((0..^2) ∪ (2..^4)) |
| 11 | fzo0to2pr 13828 | . . 3 ⊢ (0..^2) = {0, 1} | |
| 12 | 4z 12674 | . . . . 5 ⊢ 4 ∈ ℤ | |
| 13 | fzoval 13737 | . . . . 5 ⊢ (4 ∈ ℤ → (2..^4) = (2...(4 − 1))) | |
| 14 | 12, 13 | ax-mp 5 | . . . 4 ⊢ (2..^4) = (2...(4 − 1)) |
| 15 | 4m1e3 12415 | . . . . . . 7 ⊢ (4 − 1) = 3 | |
| 16 | df-3 12350 | . . . . . . 7 ⊢ 3 = (2 + 1) | |
| 17 | 15, 16 | eqtri 2783 | . . . . . 6 ⊢ (4 − 1) = (2 + 1) |
| 18 | 17 | oveq2i 7426 | . . . . 5 ⊢ (2...(4 − 1)) = (2...(2 + 1)) |
| 19 | 2z 12672 | . . . . . 6 ⊢ 2 ∈ ℤ | |
| 20 | fzpr 13656 | . . . . . 6 ⊢ (2 ∈ ℤ → (2...(2 + 1)) = {2, (2 + 1)}) | |
| 21 | 19, 20 | ax-mp 5 | . . . . 5 ⊢ (2...(2 + 1)) = {2, (2 + 1)} |
| 22 | 18, 21 | eqtri 2783 | . . . 4 ⊢ (2...(4 − 1)) = {2, (2 + 1)} |
| 23 | 2p1e3 12428 | . . . . 5 ⊢ (2 + 1) = 3 | |
| 24 | 23 | preq2i 4698 | . . . 4 ⊢ {2, (2 + 1)} = {2, 3} |
| 25 | 14, 22, 24 | 3eqtri 2787 | . . 3 ⊢ (2..^4) = {2, 3} |
| 26 | 11, 25 | uneq12i 4113 | . 2 ⊢ ((0..^2) ∪ (2..^4)) = ({0, 1} ∪ {2, 3}) |
| 27 | 10, 26 | eqtri 2783 | 1 ⊢ (0..^4) = ({0, 1} ∪ {2, 3}) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 ∈ wcel 2145 ∪ cun 3897 {cpr 4586 class class class wbr 5103 (class class class)co 7415 0cc0 11146 1c1 11147 + caddc 11149 ≤ cle 11290 − cmin 11487 2c2 12341 3c3 12342 4c4 12343 ℕ0cn0 12550 ℤcz 12637 ...cfz 13583 ..^cfzo 13731 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 ax-un 7738 ax-cnex 11202 ax-resscn 11203 ax-1cn 11204 ax-icn 11205 ax-addcl 11206 ax-addrcl 11207 ax-mulcl 11208 ax-mulrcl 11209 ax-mulcom 11210 ax-addass 11211 ax-mulass 11212 ax-distr 11213 ax-i2m1 11214 ax-1ne0 11215 ax-1rid 11216 ax-rnegex 11217 ax-rrecex 11218 ax-cnre 11219 ax-pre-lttri 11220 ax-pre-lttrn 11221 ax-pre-ltadd 11222 ax-pre-mulgt0 11223 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 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 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-pred 6300 df-ord 6361 df-on 6362 df-lim 6363 df-suc 6364 df-iota 6490 df-fun 6536 df-fn 6537 df-f 6538 df-f1 6539 df-fo 6540 df-f1o 6541 df-fv 6542 df-riota 7372 df-ov 7418 df-oprab 7419 df-mpo 7420 df-om 7865 df-1st 7988 df-2nd 7989 df-frecs 8282 df-wrecs 8313 df-recs 8362 df-rdg 8401 df-er 8700 df-en 8957 df-dom 8958 df-sdom 8959 df-pnf 11291 df-mnf 11292 df-xr 11293 df-ltxr 11294 df-le 11295 df-sub 11489 df-neg 11490 df-nn 12280 df-2 12349 df-3 12350 df-4 12351 df-n0 12551 df-z 12638 df-uz 12910 df-fz 13584 df-fzo 13732 |
| This theorem is used by: 3pthdlem1 30673 upgr4cycl4dv4e 30694 evl1deg3 34018 gpgprismgr4cycllem3 49027 gpgprismgr4cycllem7 49031 gpgprismgr4cycllem10 49034 |
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