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| Mirrors > Home > MPE Home > Th. List > fz0sn0fz1 | Structured version Visualization version GIF version | ||
| Description: A finite set of sequential nonnegative integers is the union of the singleton containing 0 and a finite set of sequential positive integers. (Contributed by AV, 20-Mar-2021.) |
| Ref | Expression |
|---|---|
| fz0sn0fz1 | ⊢ (𝑁 ∈ ℕ0 → (0...𝑁) = ({0} ∪ (1...𝑁))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 0elfz 13585 | . . 3 ⊢ (𝑁 ∈ ℕ0 → 0 ∈ (0...𝑁)) | |
| 2 | fzsplit 13511 | . . . 4 ⊢ (0 ∈ (0...𝑁) → (0...𝑁) = ((0...0) ∪ ((0 + 1)...𝑁))) | |
| 3 | 0p1e1 12303 | . . . . . 6 ⊢ (0 + 1) = 1 | |
| 4 | 3 | oveq1i 7397 | . . . . 5 ⊢ ((0 + 1)...𝑁) = (1...𝑁) |
| 5 | 4 | uneq2i 4128 | . . . 4 ⊢ ((0...0) ∪ ((0 + 1)...𝑁)) = ((0...0) ∪ (1...𝑁)) |
| 6 | 2, 5 | eqtrdi 2780 | . . 3 ⊢ (0 ∈ (0...𝑁) → (0...𝑁) = ((0...0) ∪ (1...𝑁))) |
| 7 | 1, 6 | syl 17 | . 2 ⊢ (𝑁 ∈ ℕ0 → (0...𝑁) = ((0...0) ∪ (1...𝑁))) |
| 8 | 0z 12540 | . . . 4 ⊢ 0 ∈ ℤ | |
| 9 | fzsn 13527 | . . . 4 ⊢ (0 ∈ ℤ → (0...0) = {0}) | |
| 10 | 8, 9 | mp1i 13 | . . 3 ⊢ (𝑁 ∈ ℕ0 → (0...0) = {0}) |
| 11 | 10 | uneq1d 4130 | . 2 ⊢ (𝑁 ∈ ℕ0 → ((0...0) ∪ (1...𝑁)) = ({0} ∪ (1...𝑁))) |
| 12 | 7, 11 | eqtrd 2764 | 1 ⊢ (𝑁 ∈ ℕ0 → (0...𝑁) = ({0} ∪ (1...𝑁))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1540 ∈ wcel 2109 ∪ cun 3912 {csn 4589 (class class class)co 7387 0cc0 11068 1c1 11069 + caddc 11071 ℕ0cn0 12442 ℤcz 12529 ...cfz 13468 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5251 ax-nul 5261 ax-pow 5320 ax-pr 5387 ax-un 7711 ax-cnex 11124 ax-resscn 11125 ax-1cn 11126 ax-icn 11127 ax-addcl 11128 ax-addrcl 11129 ax-mulcl 11130 ax-mulrcl 11131 ax-mulcom 11132 ax-addass 11133 ax-mulass 11134 ax-distr 11135 ax-i2m1 11136 ax-1ne0 11137 ax-1rid 11138 ax-rnegex 11139 ax-rrecex 11140 ax-cnre 11141 ax-pre-lttri 11142 ax-pre-lttrn 11143 ax-pre-ltadd 11144 ax-pre-mulgt0 11145 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-reu 3355 df-rab 3406 df-v 3449 df-sbc 3754 df-csb 3863 df-dif 3917 df-un 3919 df-in 3921 df-ss 3931 df-pss 3934 df-nul 4297 df-if 4489 df-pw 4565 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4872 df-iun 4957 df-br 5108 df-opab 5170 df-mpt 5189 df-tr 5215 df-id 5533 df-eprel 5538 df-po 5546 df-so 5547 df-fr 5591 df-we 5593 df-xp 5644 df-rel 5645 df-cnv 5646 df-co 5647 df-dm 5648 df-rn 5649 df-res 5650 df-ima 5651 df-pred 6274 df-ord 6335 df-on 6336 df-lim 6337 df-suc 6338 df-iota 6464 df-fun 6513 df-fn 6514 df-f 6515 df-f1 6516 df-fo 6517 df-f1o 6518 df-fv 6519 df-riota 7344 df-ov 7390 df-oprab 7391 df-mpo 7392 df-om 7843 df-1st 7968 df-2nd 7969 df-frecs 8260 df-wrecs 8291 df-recs 8340 df-rdg 8378 df-er 8671 df-en 8919 df-dom 8920 df-sdom 8921 df-pnf 11210 df-mnf 11211 df-xr 11212 df-ltxr 11213 df-le 11214 df-sub 11407 df-neg 11408 df-nn 12187 df-n0 12443 df-z 12530 df-uz 12794 df-fz 13469 |
| This theorem is referenced by: cyclnumvtx 29730 eucrct2eupth 30174 f1resfz0f1d 35101 isubgr3stgrlem4 47968 |
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