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Mirrors > Home > ILE Home > Th. List > fzo0to42pr | 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 8994 | . . . 4 ⊢ 2 ∈ ℕ0 | |
2 | 4nn0 8996 | . . . 4 ⊢ 4 ∈ ℕ0 | |
3 | 2re 8790 | . . . . 5 ⊢ 2 ∈ ℝ | |
4 | 4re 8797 | . . . . 5 ⊢ 4 ∈ ℝ | |
5 | 2lt4 8893 | . . . . 5 ⊢ 2 < 4 | |
6 | 3, 4, 5 | ltleii 7866 | . . . 4 ⊢ 2 ≤ 4 |
7 | elfz2nn0 9892 | . . . 4 ⊢ (2 ∈ (0...4) ↔ (2 ∈ ℕ0 ∧ 4 ∈ ℕ0 ∧ 2 ≤ 4)) | |
8 | 1, 2, 6, 7 | mpbir3an 1163 | . . 3 ⊢ 2 ∈ (0...4) |
9 | fzosplit 9954 | . . 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 9995 | . . 3 ⊢ (0..^2) = {0, 1} | |
12 | 4z 9084 | . . . . 5 ⊢ 4 ∈ ℤ | |
13 | fzoval 9925 | . . . . 5 ⊢ (4 ∈ ℤ → (2..^4) = (2...(4 − 1))) | |
14 | 12, 13 | ax-mp 5 | . . . 4 ⊢ (2..^4) = (2...(4 − 1)) |
15 | 4cn 8798 | . . . . . . . 8 ⊢ 4 ∈ ℂ | |
16 | ax-1cn 7713 | . . . . . . . 8 ⊢ 1 ∈ ℂ | |
17 | 3cn 8795 | . . . . . . . 8 ⊢ 3 ∈ ℂ | |
18 | df-4 8781 | . . . . . . . . . 10 ⊢ 4 = (3 + 1) | |
19 | 17, 16 | addcomi 7906 | . . . . . . . . . 10 ⊢ (3 + 1) = (1 + 3) |
20 | 18, 19 | eqtri 2160 | . . . . . . . . 9 ⊢ 4 = (1 + 3) |
21 | 20 | eqcomi 2143 | . . . . . . . 8 ⊢ (1 + 3) = 4 |
22 | 15, 16, 17, 21 | subaddrii 8051 | . . . . . . 7 ⊢ (4 − 1) = 3 |
23 | df-3 8780 | . . . . . . 7 ⊢ 3 = (2 + 1) | |
24 | 22, 23 | eqtri 2160 | . . . . . 6 ⊢ (4 − 1) = (2 + 1) |
25 | 24 | oveq2i 5785 | . . . . 5 ⊢ (2...(4 − 1)) = (2...(2 + 1)) |
26 | 2z 9082 | . . . . . 6 ⊢ 2 ∈ ℤ | |
27 | fzpr 9857 | . . . . . 6 ⊢ (2 ∈ ℤ → (2...(2 + 1)) = {2, (2 + 1)}) | |
28 | 26, 27 | ax-mp 5 | . . . . 5 ⊢ (2...(2 + 1)) = {2, (2 + 1)} |
29 | 25, 28 | eqtri 2160 | . . . 4 ⊢ (2...(4 − 1)) = {2, (2 + 1)} |
30 | 23 | eqcomi 2143 | . . . . 5 ⊢ (2 + 1) = 3 |
31 | 30 | preq2i 3604 | . . . 4 ⊢ {2, (2 + 1)} = {2, 3} |
32 | 14, 29, 31 | 3eqtri 2164 | . . 3 ⊢ (2..^4) = {2, 3} |
33 | 11, 32 | uneq12i 3228 | . 2 ⊢ ((0..^2) ∪ (2..^4)) = ({0, 1} ∪ {2, 3}) |
34 | 10, 33 | eqtri 2160 | 1 ⊢ (0..^4) = ({0, 1} ∪ {2, 3}) |
Colors of variables: wff set class |
Syntax hints: = wceq 1331 ∈ wcel 1480 ∪ cun 3069 {cpr 3528 class class class wbr 3929 (class class class)co 5774 0cc0 7620 1c1 7621 + caddc 7623 ≤ cle 7801 − cmin 7933 2c2 8771 3c3 8772 4c4 8773 ℕ0cn0 8977 ℤcz 9054 ...cfz 9790 ..^cfzo 9919 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 603 ax-in2 604 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-13 1491 ax-14 1492 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2121 ax-sep 4046 ax-pow 4098 ax-pr 4131 ax-un 4355 ax-setind 4452 ax-cnex 7711 ax-resscn 7712 ax-1cn 7713 ax-1re 7714 ax-icn 7715 ax-addcl 7716 ax-addrcl 7717 ax-mulcl 7718 ax-addcom 7720 ax-addass 7722 ax-distr 7724 ax-i2m1 7725 ax-0lt1 7726 ax-0id 7728 ax-rnegex 7729 ax-cnre 7731 ax-pre-ltirr 7732 ax-pre-ltwlin 7733 ax-pre-lttrn 7734 ax-pre-apti 7735 ax-pre-ltadd 7736 |
This theorem depends on definitions: df-bi 116 df-3or 963 df-3an 964 df-tru 1334 df-fal 1337 df-nf 1437 df-sb 1736 df-eu 2002 df-mo 2003 df-clab 2126 df-cleq 2132 df-clel 2135 df-nfc 2270 df-ne 2309 df-nel 2404 df-ral 2421 df-rex 2422 df-reu 2423 df-rab 2425 df-v 2688 df-sbc 2910 df-csb 3004 df-dif 3073 df-un 3075 df-in 3077 df-ss 3084 df-pw 3512 df-sn 3533 df-pr 3534 df-op 3536 df-uni 3737 df-int 3772 df-iun 3815 df-br 3930 df-opab 3990 df-mpt 3991 df-id 4215 df-xp 4545 df-rel 4546 df-cnv 4547 df-co 4548 df-dm 4549 df-rn 4550 df-res 4551 df-ima 4552 df-iota 5088 df-fun 5125 df-fn 5126 df-f 5127 df-fv 5131 df-riota 5730 df-ov 5777 df-oprab 5778 df-mpo 5779 df-1st 6038 df-2nd 6039 df-pnf 7802 df-mnf 7803 df-xr 7804 df-ltxr 7805 df-le 7806 df-sub 7935 df-neg 7936 df-inn 8721 df-2 8779 df-3 8780 df-4 8781 df-n0 8978 df-z 9055 df-uz 9327 df-fz 9791 df-fzo 9920 |
This theorem is referenced by: (None) |
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