| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 5256 | . . 3 ⊢ ∅ ∈ V | |
| 2 | str0.a | . . 3 ⊢ 𝐹 = Slot 𝐼 | |
| 3 | 1, 2 | strfvn 17205 | . 2 ⊢ (𝐹‘∅) = (∅‘𝐼) |
| 4 | 0fv 6904 | . 2 ⊢ (∅‘𝐼) = ∅ | |
| 5 | 3, 4 | eqtr2i 2785 | 1 ⊢ ∅ = (𝐹‘∅) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1559 ∅c0 4285 ‘cfv 6517 Slot cslot 17200 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-sep 5245 ax-nul 5255 ax-pr 5389 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3076 df-rex 3086 df-rab 3414 df-v 3455 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4480 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-br 5100 df-opab 5162 df-mpt 5181 df-id 5540 df-xp 5651 df-rel 5652 df-cnv 5653 df-co 5654 df-dm 5655 df-iota 6473 df-fun 6519 df-fv 6525 df-slot 17201 |
| This theorem is referenced by: strfvi 17209 setsnid 17227 base0 17233 resseqnbas 17261 oppchomfval 17729 fuchom 17980 xpchomfval 18194 xpccofval 18197 oduleval 18304 0pos 18336 frmdplusg 18871 efmndplusg 18897 oppgplusfval 19371 mgpplusg 20173 opprmulfval 20367 sralem 21223 srasca 21227 sravsca 21228 sraip 21229 zlmlem 21548 zlmvsca 21553 thlle 21729 thloc 21731 psrplusg 21969 psrmulr 21974 psrvscafval 21980 opsrle 22080 ply1plusgfvi 22283 psr1sca2 22292 ply1sca2 22295 resstopn 23226 tnglem 24680 tngds 24688 ttglem 29022 iedgval0 29187 resvlem 33480 sn-base0 43081 mendplusgfval 43722 mendmulrfval 43724 mendsca 43726 mendvscafval 43727 catcrcl 49980 |
| Copyright terms: Public domain | W3C validator |