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Mirrors > Home > ILE Home > Th. List > fztp | GIF version |
Description: A finite interval of integers with three elements. (Contributed by NM, 13-Sep-2011.) (Revised by Mario Carneiro, 7-Mar-2014.) |
Ref | Expression |
---|---|
fztp | ⊢ (𝑀 ∈ ℤ → (𝑀...(𝑀 + 2)) = {𝑀, (𝑀 + 1), (𝑀 + 2)}) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | uzid 9501 | . . 3 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ (ℤ≥‘𝑀)) | |
2 | peano2uz 9542 | . . 3 ⊢ (𝑀 ∈ (ℤ≥‘𝑀) → (𝑀 + 1) ∈ (ℤ≥‘𝑀)) | |
3 | fzsuc 10025 | . . 3 ⊢ ((𝑀 + 1) ∈ (ℤ≥‘𝑀) → (𝑀...((𝑀 + 1) + 1)) = ((𝑀...(𝑀 + 1)) ∪ {((𝑀 + 1) + 1)})) | |
4 | 1, 2, 3 | 3syl 17 | . 2 ⊢ (𝑀 ∈ ℤ → (𝑀...((𝑀 + 1) + 1)) = ((𝑀...(𝑀 + 1)) ∪ {((𝑀 + 1) + 1)})) |
5 | zcn 9217 | . . . . 5 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ ℂ) | |
6 | ax-1cn 7867 | . . . . . 6 ⊢ 1 ∈ ℂ | |
7 | addass 7904 | . . . . . 6 ⊢ ((𝑀 ∈ ℂ ∧ 1 ∈ ℂ ∧ 1 ∈ ℂ) → ((𝑀 + 1) + 1) = (𝑀 + (1 + 1))) | |
8 | 6, 6, 7 | mp3an23 1324 | . . . . 5 ⊢ (𝑀 ∈ ℂ → ((𝑀 + 1) + 1) = (𝑀 + (1 + 1))) |
9 | 5, 8 | syl 14 | . . . 4 ⊢ (𝑀 ∈ ℤ → ((𝑀 + 1) + 1) = (𝑀 + (1 + 1))) |
10 | df-2 8937 | . . . . 5 ⊢ 2 = (1 + 1) | |
11 | 10 | oveq2i 5864 | . . . 4 ⊢ (𝑀 + 2) = (𝑀 + (1 + 1)) |
12 | 9, 11 | eqtr4di 2221 | . . 3 ⊢ (𝑀 ∈ ℤ → ((𝑀 + 1) + 1) = (𝑀 + 2)) |
13 | 12 | oveq2d 5869 | . 2 ⊢ (𝑀 ∈ ℤ → (𝑀...((𝑀 + 1) + 1)) = (𝑀...(𝑀 + 2))) |
14 | fzpr 10033 | . . . 4 ⊢ (𝑀 ∈ ℤ → (𝑀...(𝑀 + 1)) = {𝑀, (𝑀 + 1)}) | |
15 | 12 | sneqd 3596 | . . . 4 ⊢ (𝑀 ∈ ℤ → {((𝑀 + 1) + 1)} = {(𝑀 + 2)}) |
16 | 14, 15 | uneq12d 3282 | . . 3 ⊢ (𝑀 ∈ ℤ → ((𝑀...(𝑀 + 1)) ∪ {((𝑀 + 1) + 1)}) = ({𝑀, (𝑀 + 1)} ∪ {(𝑀 + 2)})) |
17 | df-tp 3591 | . . 3 ⊢ {𝑀, (𝑀 + 1), (𝑀 + 2)} = ({𝑀, (𝑀 + 1)} ∪ {(𝑀 + 2)}) | |
18 | 16, 17 | eqtr4di 2221 | . 2 ⊢ (𝑀 ∈ ℤ → ((𝑀...(𝑀 + 1)) ∪ {((𝑀 + 1) + 1)}) = {𝑀, (𝑀 + 1), (𝑀 + 2)}) |
19 | 4, 13, 18 | 3eqtr3d 2211 | 1 ⊢ (𝑀 ∈ ℤ → (𝑀...(𝑀 + 2)) = {𝑀, (𝑀 + 1), (𝑀 + 2)}) |
Colors of variables: wff set class |
Syntax hints: → wi 4 = wceq 1348 ∈ wcel 2141 ∪ cun 3119 {csn 3583 {cpr 3584 {ctp 3585 ‘cfv 5198 (class class class)co 5853 ℂcc 7772 1c1 7775 + caddc 7777 2c2 8929 ℤcz 9212 ℤ≥cuz 9487 ...cfz 9965 |
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 609 ax-in2 610 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-13 2143 ax-14 2144 ax-ext 2152 ax-sep 4107 ax-pow 4160 ax-pr 4194 ax-un 4418 ax-setind 4521 ax-cnex 7865 ax-resscn 7866 ax-1cn 7867 ax-1re 7868 ax-icn 7869 ax-addcl 7870 ax-addrcl 7871 ax-mulcl 7872 ax-addcom 7874 ax-addass 7876 ax-distr 7878 ax-i2m1 7879 ax-0lt1 7880 ax-0id 7882 ax-rnegex 7883 ax-cnre 7885 ax-pre-ltirr 7886 ax-pre-ltwlin 7887 ax-pre-lttrn 7888 ax-pre-apti 7889 ax-pre-ltadd 7890 |
This theorem depends on definitions: df-bi 116 df-3or 974 df-3an 975 df-tru 1351 df-fal 1354 df-nf 1454 df-sb 1756 df-eu 2022 df-mo 2023 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ne 2341 df-nel 2436 df-ral 2453 df-rex 2454 df-reu 2455 df-rab 2457 df-v 2732 df-sbc 2956 df-dif 3123 df-un 3125 df-in 3127 df-ss 3134 df-pw 3568 df-sn 3589 df-pr 3590 df-tp 3591 df-op 3592 df-uni 3797 df-int 3832 df-br 3990 df-opab 4051 df-mpt 4052 df-id 4278 df-xp 4617 df-rel 4618 df-cnv 4619 df-co 4620 df-dm 4621 df-rn 4622 df-res 4623 df-ima 4624 df-iota 5160 df-fun 5200 df-fn 5201 df-f 5202 df-fv 5206 df-riota 5809 df-ov 5856 df-oprab 5857 df-mpo 5858 df-pnf 7956 df-mnf 7957 df-xr 7958 df-ltxr 7959 df-le 7960 df-sub 8092 df-neg 8093 df-inn 8879 df-2 8937 df-n0 9136 df-z 9213 df-uz 9488 df-fz 9966 |
This theorem is referenced by: fztpval 10039 fz0tp 10078 fz0to4untppr 10080 fzo0to3tp 10175 |
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