| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > dfuzi | Structured version Visualization version GIF version | ||
| Description: An expression for the upper integers that start at 𝑁 that is analogous to dfnn2 12159 for positive integers. (Contributed by NM, 6-Jul-2005.) (Proof shortened by Mario Carneiro, 3-May-2014.) |
| Ref | Expression |
|---|---|
| dfuzi.1 | ⊢ 𝑁 ∈ ℤ |
| Ref | Expression |
|---|---|
| dfuzi | ⊢ {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧} = ∩ {𝑥 ∣ (𝑁 ∈ 𝑥 ∧ ∀𝑦 ∈ 𝑥 (𝑦 + 1) ∈ 𝑥)} |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ssintab 4918 | . . 3 ⊢ ({𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧} ⊆ ∩ {𝑥 ∣ (𝑁 ∈ 𝑥 ∧ ∀𝑦 ∈ 𝑥 (𝑦 + 1) ∈ 𝑥)} ↔ ∀𝑥((𝑁 ∈ 𝑥 ∧ ∀𝑦 ∈ 𝑥 (𝑦 + 1) ∈ 𝑥) → {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧} ⊆ 𝑥)) | |
| 2 | dfuzi.1 | . . . 4 ⊢ 𝑁 ∈ ℤ | |
| 3 | 2 | peano5uzi 12583 | . . 3 ⊢ ((𝑁 ∈ 𝑥 ∧ ∀𝑦 ∈ 𝑥 (𝑦 + 1) ∈ 𝑥) → {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧} ⊆ 𝑥) |
| 4 | 1, 3 | mpgbir 1799 | . 2 ⊢ {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧} ⊆ ∩ {𝑥 ∣ (𝑁 ∈ 𝑥 ∧ ∀𝑦 ∈ 𝑥 (𝑦 + 1) ∈ 𝑥)} |
| 5 | 2 | zrei 12495 | . . . . . 6 ⊢ 𝑁 ∈ ℝ |
| 6 | 5 | leidi 11672 | . . . . 5 ⊢ 𝑁 ≤ 𝑁 |
| 7 | breq2 5099 | . . . . . 6 ⊢ (𝑧 = 𝑁 → (𝑁 ≤ 𝑧 ↔ 𝑁 ≤ 𝑁)) | |
| 8 | 7 | elrab 3650 | . . . . 5 ⊢ (𝑁 ∈ {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧} ↔ (𝑁 ∈ ℤ ∧ 𝑁 ≤ 𝑁)) |
| 9 | 2, 6, 8 | mpbir2an 711 | . . . 4 ⊢ 𝑁 ∈ {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧} |
| 10 | peano2uz2 12582 | . . . . . 6 ⊢ ((𝑁 ∈ ℤ ∧ 𝑦 ∈ {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧}) → (𝑦 + 1) ∈ {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧}) | |
| 11 | 2, 10 | mpan 690 | . . . . 5 ⊢ (𝑦 ∈ {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧} → (𝑦 + 1) ∈ {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧}) |
| 12 | 11 | rgen 3046 | . . . 4 ⊢ ∀𝑦 ∈ {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧} (𝑦 + 1) ∈ {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧} |
| 13 | zex 12498 | . . . . . 6 ⊢ ℤ ∈ V | |
| 14 | 13 | rabex 5281 | . . . . 5 ⊢ {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧} ∈ V |
| 15 | eleq2 2817 | . . . . . 6 ⊢ (𝑥 = {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧} → (𝑁 ∈ 𝑥 ↔ 𝑁 ∈ {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧})) | |
| 16 | eleq2 2817 | . . . . . . 7 ⊢ (𝑥 = {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧} → ((𝑦 + 1) ∈ 𝑥 ↔ (𝑦 + 1) ∈ {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧})) | |
| 17 | 16 | raleqbi1dv 3302 | . . . . . 6 ⊢ (𝑥 = {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧} → (∀𝑦 ∈ 𝑥 (𝑦 + 1) ∈ 𝑥 ↔ ∀𝑦 ∈ {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧} (𝑦 + 1) ∈ {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧})) |
| 18 | 15, 17 | anbi12d 632 | . . . . 5 ⊢ (𝑥 = {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧} → ((𝑁 ∈ 𝑥 ∧ ∀𝑦 ∈ 𝑥 (𝑦 + 1) ∈ 𝑥) ↔ (𝑁 ∈ {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧} ∧ ∀𝑦 ∈ {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧} (𝑦 + 1) ∈ {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧}))) |
| 19 | 14, 18 | elab 3637 | . . . 4 ⊢ ({𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧} ∈ {𝑥 ∣ (𝑁 ∈ 𝑥 ∧ ∀𝑦 ∈ 𝑥 (𝑦 + 1) ∈ 𝑥)} ↔ (𝑁 ∈ {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧} ∧ ∀𝑦 ∈ {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧} (𝑦 + 1) ∈ {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧})) |
| 20 | 9, 12, 19 | mpbir2an 711 | . . 3 ⊢ {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧} ∈ {𝑥 ∣ (𝑁 ∈ 𝑥 ∧ ∀𝑦 ∈ 𝑥 (𝑦 + 1) ∈ 𝑥)} |
| 21 | intss1 4916 | . . 3 ⊢ ({𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧} ∈ {𝑥 ∣ (𝑁 ∈ 𝑥 ∧ ∀𝑦 ∈ 𝑥 (𝑦 + 1) ∈ 𝑥)} → ∩ {𝑥 ∣ (𝑁 ∈ 𝑥 ∧ ∀𝑦 ∈ 𝑥 (𝑦 + 1) ∈ 𝑥)} ⊆ {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧}) | |
| 22 | 20, 21 | ax-mp 5 | . 2 ⊢ ∩ {𝑥 ∣ (𝑁 ∈ 𝑥 ∧ ∀𝑦 ∈ 𝑥 (𝑦 + 1) ∈ 𝑥)} ⊆ {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧} |
| 23 | 4, 22 | eqssi 3954 | 1 ⊢ {𝑧 ∈ ℤ ∣ 𝑁 ≤ 𝑧} = ∩ {𝑥 ∣ (𝑁 ∈ 𝑥 ∧ ∀𝑦 ∈ 𝑥 (𝑦 + 1) ∈ 𝑥)} |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1540 ∈ wcel 2109 {cab 2707 ∀wral 3044 {crab 3396 ⊆ wss 3905 ∩ cint 4899 class class class wbr 5095 (class class class)co 7353 1c1 11029 + caddc 11031 ≤ cle 11169 ℤcz 12489 |
| 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 5238 ax-nul 5248 ax-pow 5307 ax-pr 5374 ax-un 7675 ax-cnex 11084 ax-resscn 11085 ax-1cn 11086 ax-icn 11087 ax-addcl 11088 ax-addrcl 11089 ax-mulcl 11090 ax-mulrcl 11091 ax-mulcom 11092 ax-addass 11093 ax-mulass 11094 ax-distr 11095 ax-i2m1 11096 ax-1ne0 11097 ax-1rid 11098 ax-rnegex 11099 ax-rrecex 11100 ax-cnre 11101 ax-pre-lttri 11102 ax-pre-lttrn 11103 ax-pre-ltadd 11104 ax-pre-mulgt0 11105 |
| 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 3346 df-rab 3397 df-v 3440 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-pss 3925 df-nul 4287 df-if 4479 df-pw 4555 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4862 df-int 4900 df-iun 4946 df-br 5096 df-opab 5158 df-mpt 5177 df-tr 5203 df-id 5518 df-eprel 5523 df-po 5531 df-so 5532 df-fr 5576 df-we 5578 df-xp 5629 df-rel 5630 df-cnv 5631 df-co 5632 df-dm 5633 df-rn 5634 df-res 5635 df-ima 5636 df-pred 6253 df-ord 6314 df-on 6315 df-lim 6316 df-suc 6317 df-iota 6442 df-fun 6488 df-fn 6489 df-f 6490 df-f1 6491 df-fo 6492 df-f1o 6493 df-fv 6494 df-riota 7310 df-ov 7356 df-oprab 7357 df-mpo 7358 df-om 7807 df-2nd 7932 df-frecs 8221 df-wrecs 8252 df-recs 8301 df-rdg 8339 df-er 8632 df-en 8880 df-dom 8881 df-sdom 8882 df-pnf 11170 df-mnf 11171 df-xr 11172 df-ltxr 11173 df-le 11174 df-sub 11367 df-neg 11368 df-nn 12147 df-n0 12403 df-z 12490 |
| This theorem is referenced by: (None) |
| Copyright terms: Public domain | W3C validator |