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| Mirrors > Home > MPE Home > Th. List > cfilfil | Structured version Visualization version GIF version | ||
| Description: A Cauchy filter is a filter. (Contributed by Mario Carneiro, 13-Oct-2015.) |
| Ref | Expression |
|---|---|
| cfilfil | ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (CauFil‘𝐷)) → 𝐹 ∈ (Fil‘𝑋)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | iscfil 25613 | . 2 ⊢ (𝐷 ∈ (∞Met‘𝑋) → (𝐹 ∈ (CauFil‘𝐷) ↔ (𝐹 ∈ (Fil‘𝑋) ∧ ∀𝑥 ∈ ℝ+ ∃𝑦 ∈ 𝐹 (𝐷 “ (𝑦 × 𝑦)) ⊆ (0[,)𝑥)))) | |
| 2 | 1 | simprbda 504 | 1 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝐹 ∈ (CauFil‘𝐷)) → 𝐹 ∈ (Fil‘𝑋)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∈ wcel 2147 ∀wral 3080 ∃wrex 3090 ⊆ wss 3900 × cxp 5653 “ cima 5658 ‘cfv 6555 (class class class)co 7440 0cc0 11224 ℝ+crp 13144 [,)cico 13502 ∞Metcxmet 21690 Filcfil 24191 CauFilccfil 25600 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5252 ax-nul 5263 ax-pow 5331 ax-pr 5395 ax-un 7772 ax-cnex 11280 ax-resscn 11281 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-sbc 3743 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-br 5107 df-opab 5171 df-mpt 5190 df-id 5550 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-iota 6509 df-fun 6557 df-fn 6558 df-f 6559 df-fv 6563 df-ov 7443 df-oprab 7444 df-mpo 7445 df-map 8874 df-xr 11371 df-xmet 21698 df-cfil 25603 |
| This theorem is used by: cfil3i 25617 iscfil3 25621 cfilfcls 25622 iscmet3 25641 cfilresi 25643 cmetss 25664 relcmpcmet 25666 cfilucfil4 25669 fmcncfil 34630 |
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