| Mathbox for Frédéric Liné |
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Related theorems GIF version |
| Description: The underlying set of a subspace topology. |
| Ref | Expression |
|---|---|
| stoig2 |
⊢ ((J ∈ Top ⋀ A ⊆ ∪J) → ∪(subSp
‘ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | stoig 11064 |
. 2
⊢ ((J ∈ Top ⋀ A ⊆ ∪J) → | |
| 2 | istps 7818 |
. . 3
⊢ ( | |
| 3 | id 59 |
. . . . 5
⊢ (∪(subSp ‘ | |
| 4 | 3 | eqcoms 1521 |
. . . 4
⊢ (A = ∪(subSp ‘ |
| 5 | 4 | adantl 388 |
. . 3
⊢ (((subSp ‘ |
| 6 | 2, 5 | sylbi 197 |
. 2
⊢ ( |
| 7 | 1, 6 | syl 10 |
1
⊢ ((J ∈ Top ⋀ A ⊆ ∪J) → ∪(subSp
‘ |
| Colors of variables: wff set class |
| Syntax hints: → wi 3
⋀ wa 221 = wceq 992
∈ wcel 994
⊆ wss 2099
|
| This theorem is referenced by: stfincomp 11122 singcon 11137 subcld 11480 subcls 11481 subntr 11482 cnsubsp 11483 cnsubsp2 11484 compsublem 11487 compsub 11488 connsub 11502 ivthALT 11515 cnimass 11949 cnres 11950 cnres2 11951 cnresima 11952 cnss 11953 piececn 11955 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 998 ax-gen 999 ax-8 1000 ax-9 1001 ax-10 1002 ax-11 1003 ax-12 1004 ax-13 1005 ax-14 1006 ax-17 1007 ax-4 1009 ax-5o 1011 ax-6o 1014 ax-9o 1159 ax-10o 1177 ax-16 1247 ax-11o 1255 ax-ext 1500 ax-rep 2767 ax-sep 2777 ax-nul 2784 ax-pow 2818 ax-pr 2855 ax-un 3089 ax-reg 4736 |
| This theorem depends on definitions: df-bi 145 df-or 222 df-an 223 df-3an 783 df-ex 1017 df-sb 1209 df-eu 1421 df-mo 1422 df-clab 1506 df-cleq 1511 df-clel 1514 df-ne 1630 df-ral 1695 df-rex 1696 df-rab 1698 df-v 1858 df-sbc 1987 df-csb 2052 df-dif 2101 df-un 2102 df-in 2103 df-ss 2105 df-nul 2333 df-if 2416 df-pw 2459 df-sn 2470 df-pr 2471 df-op 2474 df-uni 2570 df-iun 2635 df-br 2693 df-opab 2741 df-id 2913 df-xp 3265 df-rel 3266 df-cnv 3267 df-co 3268 df-dm 3269 df-rn 3270 df-res 3271 df-ima 3272 df-fun 3273 df-fn 3274 df-fv 3279 df-opr 4023 df-oprab 4024 df-top 7804 df-topsp 7805 df-subsp 11055 |