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Mirrors > Home > MPE Home > Th. List > unirnblps | Structured version Visualization version GIF version |
Description: The union of the set of balls of a metric space is its base set. (Contributed by NM, 12-Sep-2006.) (Revised by Mario Carneiro, 12-Nov-2013.) (Revised by Thierry Arnoux, 11-Mar-2018.) |
Ref | Expression |
---|---|
unirnblps | ⊢ (𝐷 ∈ (PsMet‘𝑋) → ∪ ran (ball‘𝐷) = 𝑋) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | blfps 23108 | . . . 4 ⊢ (𝐷 ∈ (PsMet‘𝑋) → (ball‘𝐷):(𝑋 × ℝ*)⟶𝒫 𝑋) | |
2 | 1 | frnd 6505 | . . 3 ⊢ (𝐷 ∈ (PsMet‘𝑋) → ran (ball‘𝐷) ⊆ 𝒫 𝑋) |
3 | sspwuni 4987 | . . 3 ⊢ (ran (ball‘𝐷) ⊆ 𝒫 𝑋 ↔ ∪ ran (ball‘𝐷) ⊆ 𝑋) | |
4 | 2, 3 | sylib 221 | . 2 ⊢ (𝐷 ∈ (PsMet‘𝑋) → ∪ ran (ball‘𝐷) ⊆ 𝑋) |
5 | 1rp 12434 | . . . 4 ⊢ 1 ∈ ℝ+ | |
6 | blcntrps 23114 | . . . 4 ⊢ ((𝐷 ∈ (PsMet‘𝑋) ∧ 𝑥 ∈ 𝑋 ∧ 1 ∈ ℝ+) → 𝑥 ∈ (𝑥(ball‘𝐷)1)) | |
7 | 5, 6 | mp3an3 1447 | . . 3 ⊢ ((𝐷 ∈ (PsMet‘𝑋) ∧ 𝑥 ∈ 𝑋) → 𝑥 ∈ (𝑥(ball‘𝐷)1)) |
8 | 1xr 10738 | . . . 4 ⊢ 1 ∈ ℝ* | |
9 | blelrnps 23118 | . . . 4 ⊢ ((𝐷 ∈ (PsMet‘𝑋) ∧ 𝑥 ∈ 𝑋 ∧ 1 ∈ ℝ*) → (𝑥(ball‘𝐷)1) ∈ ran (ball‘𝐷)) | |
10 | 8, 9 | mp3an3 1447 | . . 3 ⊢ ((𝐷 ∈ (PsMet‘𝑋) ∧ 𝑥 ∈ 𝑋) → (𝑥(ball‘𝐷)1) ∈ ran (ball‘𝐷)) |
11 | elunii 4803 | . . 3 ⊢ ((𝑥 ∈ (𝑥(ball‘𝐷)1) ∧ (𝑥(ball‘𝐷)1) ∈ ran (ball‘𝐷)) → 𝑥 ∈ ∪ ran (ball‘𝐷)) | |
12 | 7, 10, 11 | syl2anc 587 | . 2 ⊢ ((𝐷 ∈ (PsMet‘𝑋) ∧ 𝑥 ∈ 𝑋) → 𝑥 ∈ ∪ ran (ball‘𝐷)) |
13 | 4, 12 | eqelssd 3913 | 1 ⊢ (𝐷 ∈ (PsMet‘𝑋) → ∪ ran (ball‘𝐷) = 𝑋) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 399 = wceq 1538 ∈ wcel 2111 ⊆ wss 3858 𝒫 cpw 4494 ∪ cuni 4798 × cxp 5522 ran crn 5525 ‘cfv 6335 (class class class)co 7150 1c1 10576 ℝ*cxr 10712 ℝ+crp 12430 PsMetcpsmet 20150 ballcbl 20153 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2729 ax-sep 5169 ax-nul 5176 ax-pow 5234 ax-pr 5298 ax-un 7459 ax-cnex 10631 ax-resscn 10632 ax-1cn 10633 ax-icn 10634 ax-addcl 10635 ax-addrcl 10636 ax-mulcl 10637 ax-mulrcl 10638 ax-mulcom 10639 ax-addass 10640 ax-mulass 10641 ax-distr 10642 ax-i2m1 10643 ax-1ne0 10644 ax-1rid 10645 ax-rnegex 10646 ax-rrecex 10647 ax-cnre 10648 ax-pre-lttri 10649 ax-pre-lttrn 10650 ax-pre-ltadd 10651 ax-pre-mulgt0 10652 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-fal 1551 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2557 df-eu 2588 df-clab 2736 df-cleq 2750 df-clel 2830 df-nfc 2901 df-ne 2952 df-nel 3056 df-ral 3075 df-rex 3076 df-reu 3077 df-rab 3079 df-v 3411 df-sbc 3697 df-csb 3806 df-dif 3861 df-un 3863 df-in 3865 df-ss 3875 df-nul 4226 df-if 4421 df-pw 4496 df-sn 4523 df-pr 4525 df-op 4529 df-uni 4799 df-iun 4885 df-br 5033 df-opab 5095 df-mpt 5113 df-id 5430 df-po 5443 df-so 5444 df-xp 5530 df-rel 5531 df-cnv 5532 df-co 5533 df-dm 5534 df-rn 5535 df-res 5536 df-ima 5537 df-iota 6294 df-fun 6337 df-fn 6338 df-f 6339 df-f1 6340 df-fo 6341 df-f1o 6342 df-fv 6343 df-riota 7108 df-ov 7153 df-oprab 7154 df-mpo 7155 df-1st 7693 df-2nd 7694 df-er 8299 df-map 8418 df-en 8528 df-dom 8529 df-sdom 8530 df-pnf 10715 df-mnf 10716 df-xr 10717 df-ltxr 10718 df-le 10719 df-sub 10910 df-neg 10911 df-rp 12431 df-psmet 20158 df-bl 20161 |
This theorem is referenced by: psmetutop 23269 |
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