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| Mirrors > Home > MPE Home > Th. List > str0 | Structured version Visualization version GIF version | ||
| Description: All components of the empty set are empty sets. (Contributed by Stefan O'Rear, 27-Nov-2014.) (Revised by Mario Carneiro, 7-Dec-2014.) |
| Ref | Expression |
|---|---|
| str0.a | ⊢ 𝐹 = Slot 𝐼 |
| Ref | Expression |
|---|---|
| str0 | ⊢ ∅ = (𝐹‘∅) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 0ex 5265 | . . 3 ⊢ ∅ ∈ V | |
| 2 | str0.a | . . 3 ⊢ 𝐹 = Slot 𝐼 | |
| 3 | 1, 2 | strfvn 17396 | . 2 ⊢ (𝐹‘∅) = (∅‘𝐼) |
| 4 | 0fv 6952 | . 2 ⊢ (∅‘𝐼) = ∅ | |
| 5 | 3, 4 | eqtr2i 2787 | 1 ⊢ ∅ = (𝐹‘∅) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 ∅c0 4281 ‘cfv 6561 Slot cslot 17391 |
| 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 5253 ax-nul 5264 ax-pr 5396 |
| 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-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-br 5107 df-opab 5172 df-mpt 5191 df-id 5551 df-xp 5662 df-rel 5663 df-cnv 5664 df-co 5665 df-dm 5666 df-iota 6515 df-fun 6563 df-fv 6569 df-slot 17392 |
| This theorem is used by: strfvi 17400 setsnid 17418 base0 17424 resseqnbas 17452 oppchomfval 17920 fuchom 18171 xpchomfval 18385 xpccofval 18388 oduleval 18495 0pos 18527 frmdplusg 19082 efmndplusg 19108 oppgplusfval 19595 mgpplusg 20397 opprmulfval 20602 sralem 21484 srasca 21488 sravsca 21489 sraip 21490 zlmlem 21855 zlmvsca 21860 thlle 22036 thloc 22038 psrplusg 22278 psrmulr 22283 psrvscafval 22289 opsrle 22389 ply1plusgfvi 22592 psr1sca2 22601 ply1sca2 22604 resstopn 23537 tnglem 24992 tngds 25000 ttglem 29486 iedgval0 29651 resvlem 33978 sn-base0 43763 mendplusgfval 44386 mendmulrfval 44388 mendsca 44390 mendvscafval 44391 catcrcl 50745 |
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