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| Mirrors > Home > ILE Home > Th. List > distps | GIF version | ||
| Description: The discrete topology on a set 𝐴 expressed as a topological space. (Contributed by FL, 20-Aug-2006.) |
| Ref | Expression |
|---|---|
| distps.a | ⊢ 𝐴 ∈ V |
| distps.k | ⊢ 𝐾 = {〈(Base‘ndx), 𝐴〉, 〈(TopSet‘ndx), 𝒫 𝐴〉} |
| Ref | Expression |
|---|---|
| distps | ⊢ 𝐾 ∈ TopSp |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | distps.k | . 2 ⊢ 𝐾 = {〈(Base‘ndx), 𝐴〉, 〈(TopSet‘ndx), 𝒫 𝐴〉} | |
| 2 | unipw 4279 | . . 3 ⊢ ∪ 𝒫 𝐴 = 𝐴 | |
| 3 | 2 | eqcomi 2211 | . 2 ⊢ 𝐴 = ∪ 𝒫 𝐴 |
| 4 | distps.a | . . 3 ⊢ 𝐴 ∈ V | |
| 5 | distop 14672 | . . 3 ⊢ (𝐴 ∈ V → 𝒫 𝐴 ∈ Top) | |
| 6 | 4, 5 | ax-mp 5 | . 2 ⊢ 𝒫 𝐴 ∈ Top |
| 7 | 1, 3, 6 | eltpsi 14628 | 1 ⊢ 𝐾 ∈ TopSp |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1373 ∈ wcel 2178 Vcvv 2776 𝒫 cpw 3626 {cpr 3644 〈cop 3646 ∪ cuni 3864 ‘cfv 5290 ndxcnx 12944 Basecbs 12947 TopSetcts 13030 Topctop 14584 TopSpctps 14617 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-13 2180 ax-14 2181 ax-ext 2189 ax-coll 4175 ax-sep 4178 ax-pow 4234 ax-pr 4269 ax-un 4498 ax-setind 4603 ax-cnex 8051 ax-resscn 8052 ax-1cn 8053 ax-1re 8054 ax-icn 8055 ax-addcl 8056 ax-addrcl 8057 ax-mulcl 8058 ax-addcom 8060 ax-addass 8062 ax-i2m1 8065 ax-0lt1 8066 ax-0id 8068 ax-rnegex 8069 ax-pre-ltirr 8072 ax-pre-lttrn 8074 ax-pre-ltadd 8076 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-fal 1379 df-nf 1485 df-sb 1787 df-eu 2058 df-mo 2059 df-clab 2194 df-cleq 2200 df-clel 2203 df-nfc 2339 df-ne 2379 df-nel 2474 df-ral 2491 df-rex 2492 df-reu 2493 df-rab 2495 df-v 2778 df-sbc 3006 df-csb 3102 df-dif 3176 df-un 3178 df-in 3180 df-ss 3187 df-nul 3469 df-pw 3628 df-sn 3649 df-pr 3650 df-op 3652 df-uni 3865 df-int 3900 df-iun 3943 df-br 4060 df-opab 4122 df-mpt 4123 df-id 4358 df-xp 4699 df-rel 4700 df-cnv 4701 df-co 4702 df-dm 4703 df-rn 4704 df-res 4705 df-ima 4706 df-iota 5251 df-fun 5292 df-fn 5293 df-f 5294 df-f1 5295 df-fo 5296 df-f1o 5297 df-fv 5298 df-ov 5970 df-oprab 5971 df-mpo 5972 df-1st 6249 df-2nd 6250 df-pnf 8144 df-mnf 8145 df-ltxr 8147 df-inn 9072 df-2 9130 df-3 9131 df-4 9132 df-5 9133 df-6 9134 df-7 9135 df-8 9136 df-9 9137 df-ndx 12950 df-slot 12951 df-base 12953 df-tset 13043 df-rest 13188 df-topn 13189 df-top 14585 df-topon 14598 df-topsp 14618 |
| This theorem is referenced by: (None) |
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