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Mirrors > Home > ILE Home > Th. List > uzss | GIF version |
Description: Subset relationship for two sets of upper integers. (Contributed by NM, 5-Sep-2005.) |
Ref | Expression |
---|---|
uzss | ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (ℤ≥‘𝑁) ⊆ (ℤ≥‘𝑀)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eluzle 8631 | . . . . . 6 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑀 ≤ 𝑁) | |
2 | 1 | adantr 270 | . . . . 5 ⊢ ((𝑁 ∈ (ℤ≥‘𝑀) ∧ 𝑘 ∈ ℤ) → 𝑀 ≤ 𝑁) |
3 | eluzel2 8624 | . . . . . . 7 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑀 ∈ ℤ) | |
4 | eluzelz 8628 | . . . . . . 7 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → 𝑁 ∈ ℤ) | |
5 | 3, 4 | jca 300 | . . . . . 6 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ)) |
6 | zletr 8400 | . . . . . . 7 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝑘 ∈ ℤ) → ((𝑀 ≤ 𝑁 ∧ 𝑁 ≤ 𝑘) → 𝑀 ≤ 𝑘)) | |
7 | 6 | 3expa 1138 | . . . . . 6 ⊢ (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) ∧ 𝑘 ∈ ℤ) → ((𝑀 ≤ 𝑁 ∧ 𝑁 ≤ 𝑘) → 𝑀 ≤ 𝑘)) |
8 | 5, 7 | sylan 277 | . . . . 5 ⊢ ((𝑁 ∈ (ℤ≥‘𝑀) ∧ 𝑘 ∈ ℤ) → ((𝑀 ≤ 𝑁 ∧ 𝑁 ≤ 𝑘) → 𝑀 ≤ 𝑘)) |
9 | 2, 8 | mpand 419 | . . . 4 ⊢ ((𝑁 ∈ (ℤ≥‘𝑀) ∧ 𝑘 ∈ ℤ) → (𝑁 ≤ 𝑘 → 𝑀 ≤ 𝑘)) |
10 | 9 | imdistanda 436 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → ((𝑘 ∈ ℤ ∧ 𝑁 ≤ 𝑘) → (𝑘 ∈ ℤ ∧ 𝑀 ≤ 𝑘))) |
11 | eluz1 8623 | . . . 4 ⊢ (𝑁 ∈ ℤ → (𝑘 ∈ (ℤ≥‘𝑁) ↔ (𝑘 ∈ ℤ ∧ 𝑁 ≤ 𝑘))) | |
12 | 4, 11 | syl 14 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (𝑘 ∈ (ℤ≥‘𝑁) ↔ (𝑘 ∈ ℤ ∧ 𝑁 ≤ 𝑘))) |
13 | eluz1 8623 | . . . 4 ⊢ (𝑀 ∈ ℤ → (𝑘 ∈ (ℤ≥‘𝑀) ↔ (𝑘 ∈ ℤ ∧ 𝑀 ≤ 𝑘))) | |
14 | 3, 13 | syl 14 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (𝑘 ∈ (ℤ≥‘𝑀) ↔ (𝑘 ∈ ℤ ∧ 𝑀 ≤ 𝑘))) |
15 | 10, 12, 14 | 3imtr4d 201 | . 2 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (𝑘 ∈ (ℤ≥‘𝑁) → 𝑘 ∈ (ℤ≥‘𝑀))) |
16 | 15 | ssrdv 3005 | 1 ⊢ (𝑁 ∈ (ℤ≥‘𝑀) → (ℤ≥‘𝑁) ⊆ (ℤ≥‘𝑀)) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 102 ↔ wb 103 ∈ wcel 1433 ⊆ wss 2973 class class class wbr 3785 ‘cfv 4922 ≤ cle 7154 ℤcz 8351 ℤ≥cuz 8619 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-in1 576 ax-in2 577 ax-io 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-13 1444 ax-14 1445 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 ax-sep 3896 ax-pow 3948 ax-pr 3964 ax-un 4188 ax-setind 4280 ax-cnex 7067 ax-resscn 7068 ax-pre-ltwlin 7089 |
This theorem depends on definitions: df-bi 115 df-3or 920 df-3an 921 df-tru 1287 df-fal 1290 df-nf 1390 df-sb 1686 df-eu 1944 df-mo 1945 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-ne 2246 df-nel 2340 df-ral 2353 df-rex 2354 df-rab 2357 df-v 2603 df-sbc 2816 df-dif 2975 df-un 2977 df-in 2979 df-ss 2986 df-pw 3384 df-sn 3404 df-pr 3405 df-op 3407 df-uni 3602 df-br 3786 df-opab 3840 df-mpt 3841 df-id 4048 df-xp 4369 df-rel 4370 df-cnv 4371 df-co 4372 df-dm 4373 df-rn 4374 df-res 4375 df-ima 4376 df-iota 4887 df-fun 4924 df-fn 4925 df-f 4926 df-fv 4930 df-ov 5535 df-pnf 7155 df-mnf 7156 df-xr 7157 df-ltxr 7158 df-le 7159 df-neg 7282 df-z 8352 df-uz 8620 |
This theorem is referenced by: uzin 8651 uznnssnn 8665 fzopth 9079 4fvwrd4 9150 fzouzsplit 9188 iseqfeq2 9449 cau3lem 10000 isprm3 10500 |
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