![]() |
Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > MPE Home > Th. List > elfz1 | Structured version Visualization version GIF version |
Description: Membership in a finite set of sequential integers. (Contributed by NM, 21-Jul-2005.) |
Ref | Expression |
---|---|
elfz1 | ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝐾 ∈ (𝑀...𝑁) ↔ (𝐾 ∈ ℤ ∧ 𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fzval 13546 | . . 3 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀...𝑁) = {𝑗 ∈ ℤ ∣ (𝑀 ≤ 𝑗 ∧ 𝑗 ≤ 𝑁)}) | |
2 | 1 | eleq2d 2825 | . 2 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝐾 ∈ (𝑀...𝑁) ↔ 𝐾 ∈ {𝑗 ∈ ℤ ∣ (𝑀 ≤ 𝑗 ∧ 𝑗 ≤ 𝑁)})) |
3 | breq2 5152 | . . . . 5 ⊢ (𝑗 = 𝐾 → (𝑀 ≤ 𝑗 ↔ 𝑀 ≤ 𝐾)) | |
4 | breq1 5151 | . . . . 5 ⊢ (𝑗 = 𝐾 → (𝑗 ≤ 𝑁 ↔ 𝐾 ≤ 𝑁)) | |
5 | 3, 4 | anbi12d 632 | . . . 4 ⊢ (𝑗 = 𝐾 → ((𝑀 ≤ 𝑗 ∧ 𝑗 ≤ 𝑁) ↔ (𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁))) |
6 | 5 | elrab 3695 | . . 3 ⊢ (𝐾 ∈ {𝑗 ∈ ℤ ∣ (𝑀 ≤ 𝑗 ∧ 𝑗 ≤ 𝑁)} ↔ (𝐾 ∈ ℤ ∧ (𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁))) |
7 | 3anass 1094 | . . 3 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁) ↔ (𝐾 ∈ ℤ ∧ (𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁))) | |
8 | 6, 7 | bitr4i 278 | . 2 ⊢ (𝐾 ∈ {𝑗 ∈ ℤ ∣ (𝑀 ≤ 𝑗 ∧ 𝑗 ≤ 𝑁)} ↔ (𝐾 ∈ ℤ ∧ 𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁)) |
9 | 2, 8 | bitrdi 287 | 1 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝐾 ∈ (𝑀...𝑁) ↔ (𝐾 ∈ ℤ ∧ 𝑀 ≤ 𝐾 ∧ 𝐾 ≤ 𝑁))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∧ w3a 1086 = wceq 1537 ∈ wcel 2106 {crab 3433 class class class wbr 5148 (class class class)co 7431 ≤ cle 11294 ℤcz 12611 ...cfz 13544 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1908 ax-6 1965 ax-7 2005 ax-8 2108 ax-9 2116 ax-10 2139 ax-11 2155 ax-12 2175 ax-ext 2706 ax-sep 5302 ax-nul 5312 ax-pr 5438 ax-cnex 11209 ax-resscn 11210 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1540 df-fal 1550 df-ex 1777 df-nf 1781 df-sb 2063 df-mo 2538 df-eu 2567 df-clab 2713 df-cleq 2727 df-clel 2814 df-nfc 2890 df-ral 3060 df-rex 3069 df-rab 3434 df-v 3480 df-sbc 3792 df-dif 3966 df-un 3968 df-in 3970 df-ss 3980 df-nul 4340 df-if 4532 df-pw 4607 df-sn 4632 df-pr 4634 df-op 4638 df-uni 4913 df-br 5149 df-opab 5211 df-id 5583 df-xp 5695 df-rel 5696 df-cnv 5697 df-co 5698 df-dm 5699 df-iota 6516 df-fun 6565 df-fv 6571 df-ov 7434 df-oprab 7435 df-mpo 7436 df-neg 11493 df-z 12612 df-fz 13545 |
This theorem is referenced by: elfz 13550 elfz2 13551 fzen 13578 fzaddel 13595 fzadd2 13596 elfzm11 13632 fznn0 13656 phicl2 16802 nndiffz1 32795 fzmul 37728 bccl2d 41973 lcmineqlem11 42021 fz1eqin 42757 jm2.27dlem2 42999 fzunt 43445 fzuntd 43446 fzunt1d 43447 fzuntgd 43448 iblspltprt 45929 itgspltprt 45935 natglobalincr 46831 |
Copyright terms: Public domain | W3C validator |