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Related theorems GIF version |
| Description: The union of a set of subspaces is smaller than its supremum. |
| Ref | Expression |
|---|---|
| shsupunss | ⊢ (A ⊆ Sℋ → ∪A ⊆ (span ‘∪A)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | shsspwh 5153 | . . . . 5 ⊢ Sℋ ⊆ ℘ ℋ | |
| 2 | sstr 1511 | . . . . 5 ⊢ ((A ⊆ Sℋ ∧ Sℋ ⊆ ℘ ℋ ) → A ⊆ ℘ ℋ ) | |
| 3 | 1, 2 | mpan2 519 | . . . 4 ⊢ (A ⊆ Sℋ → A ⊆ ℘ ℋ ) |
| 4 | uniss 1936 | . . . 4 ⊢ (A ⊆ ℘ ℋ → ∪A ⊆ ∪℘ ℋ ) | |
| 5 | 3, 4 | syl 12 | . . 3 ⊢ (A ⊆ Sℋ → ∪A ⊆ ∪℘ ℋ ) |
| 6 | unipw 1960 | . . 3 ⊢ ∪℘ ℋ = ℋ | |
| 7 | 5, 6 | syl6ss 1546 | . 2 ⊢ (A ⊆ Sℋ → ∪A ⊆ ℋ ) |
| 8 | spanss2 5315 | . 2 ⊢ (∪A ⊆ ℋ → ∪A ⊆ (span ‘∪A)) | |
| 9 | 7, 8 | syl 12 | 1 ⊢ (A ⊆ Sℋ → ∪A ⊆ (span ‘∪A)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 2 ⊆ wss 1487 ℘cpw 1798 ∪cuni 1919 ‘cfv 2422 ℋ chil 4958 Sℋ csh 4967 spancspn 4971 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-6 675 ax-7 676 ax-gen 677 ax-8 798 ax-9 799 ax-10 800 ax-11 801 ax-12 802 ax-13 804 ax-14 805 ax-16 922 ax-17 925 ax-ext 1074 ax-rep 1075 ax-pow 1077 ax-hilex 4983 ax-hvaddcl 4984 ax-hvzercl 4987 ax-hvmulcl 4989 |
| This theorem depends on definitions: df-bi 128 df-or 197 df-an 198 df-ex 679 df-sb 853 df-eu 1009 df-mo 1010 df-clab 1093 df-cleq 1097 df-clel 1099 df-ral 1205 df-rex 1206 df-rab 1208 df-v 1349 df-dif 1489 df-un 1490 df-in 1491 df-ss 1492 df-nul 1708 df-pw 1799 df-sn 1811 df-pr 1812 df-op 1815 df-uni 1920 df-int 1966 df-br 2063 df-opab 2098 df-id 2125 df-xp 2424 df-rel 2425 df-cnv 2426 df-co 2427 df-dm 2428 df-rn 2429 df-res 2430 df-ima 2431 df-fun 2432 df-fn 2433 df-f 2434 df-fv 2438 df-opr 3003 df-hlim 5107 df-sh 5114 df-ch 5127 df-span 5276 |