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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 5247 | . . 3 ⊢ ∅ ∈ V | |
| 2 | str0.a | . . 3 ⊢ 𝐹 = Slot 𝐼 | |
| 3 | 1, 2 | strfvn 17103 | . 2 ⊢ (𝐹‘∅) = (∅‘𝐼) |
| 4 | 0fv 6869 | . 2 ⊢ (∅‘𝐼) = ∅ | |
| 5 | 3, 4 | eqtr2i 2755 | 1 ⊢ ∅ = (𝐹‘∅) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1541 ∅c0 4282 ‘cfv 6487 Slot cslot 17098 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-10 2144 ax-11 2160 ax-12 2180 ax-ext 2703 ax-sep 5236 ax-nul 5246 ax-pr 5372 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2535 df-eu 2564 df-clab 2710 df-cleq 2723 df-clel 2806 df-nfc 2881 df-ne 2929 df-ral 3048 df-rex 3057 df-rab 3396 df-v 3438 df-dif 3900 df-un 3902 df-ss 3914 df-nul 4283 df-if 4475 df-sn 4576 df-pr 4578 df-op 4582 df-uni 4859 df-br 5094 df-opab 5156 df-mpt 5175 df-id 5514 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-iota 6443 df-fun 6489 df-fv 6495 df-slot 17099 |
| This theorem is referenced by: strfvi 17107 setsnid 17125 base0 17131 resseqnbas 17159 oppchomfval 17626 fuchom 17877 xpchomfval 18091 xpccofval 18094 oduleval 18201 0pos 18233 frmdplusg 18768 efmndplusg 18794 oppgplusfval 19266 mgpplusg 20068 opprmulfval 20263 sralem 21116 srasca 21120 sravsca 21121 sraip 21122 zlmlem 21459 zlmvsca 21464 thlle 21640 thloc 21642 psrplusg 21879 psrmulr 21885 psrvscafval 21891 opsrle 21988 ply1plusgfvi 22160 psr1sca2 22169 ply1sca2 22172 resstopn 23107 tnglem 24561 tngds 24569 ttglem 28860 iedgval0 29025 resvlem 33305 sn-base0 42594 mendplusgfval 43279 mendmulrfval 43281 mendsca 43283 mendvscafval 43284 catcrcl 49501 |
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