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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 5262 | . . 3 ⊢ ∅ ∈ V | |
| 2 | str0.a | . . 3 ⊢ 𝐹 = Slot 𝐼 | |
| 3 | 1, 2 | strfvn 17236 | . 2 ⊢ (𝐹‘∅) = (∅‘𝐼) |
| 4 | 0fv 6912 | . 2 ⊢ (∅‘𝐼) = ∅ | |
| 5 | 3, 4 | eqtr2i 2789 | 1 ⊢ ∅ = (𝐹‘∅) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1563 ∅c0 4288 ‘cfv 6525 Slot cslot 17231 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2737 ax-sep 5251 ax-nul 5261 ax-pr 5395 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-nf 1807 df-sb 2094 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-ral 3080 df-rex 3090 df-rab 3418 df-v 3459 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-nul 4289 df-if 4484 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4869 df-br 5106 df-opab 5168 df-mpt 5187 df-id 5547 df-xp 5658 df-rel 5659 df-cnv 5660 df-co 5661 df-dm 5662 df-iota 6481 df-fun 6527 df-fv 6533 df-slot 17232 |
| This theorem is referenced by: strfvi 17240 setsnid 17258 base0 17264 resseqnbas 17292 oppchomfval 17760 fuchom 18011 xpchomfval 18225 xpccofval 18228 oduleval 18335 0pos 18367 frmdplusg 18903 efmndplusg 18929 oppgplusfval 19409 mgpplusg 20211 opprmulfval 20412 sralem 21266 srasca 21270 sravsca 21271 sraip 21272 zlmlem 21626 zlmvsca 21631 thlle 21807 thloc 21809 psrplusg 22047 psrmulr 22052 psrvscafval 22058 opsrle 22158 ply1plusgfvi 22361 psr1sca2 22370 ply1sca2 22373 resstopn 23304 tnglem 24758 tngds 24766 ttglem 29134 iedgval0 29299 resvlem 33568 sn-base0 43129 mendplusgfval 43770 mendmulrfval 43772 mendsca 43774 mendvscafval 43775 catcrcl 50024 |
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