| 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 5275 | . . 3 ⊢ ∅ ∈ V | |
| 2 | str0.a | . . 3 ⊢ 𝐹 = Slot 𝐼 | |
| 3 | 1, 2 | strfvn 17271 | . 2 ⊢ (𝐹‘∅) = (∅‘𝐼) |
| 4 | 0fv 6929 | . 2 ⊢ (∅‘𝐼) = ∅ | |
| 5 | 3, 4 | eqtr2i 2790 | 1 ⊢ ∅ = (𝐹‘∅) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 ∅c0 4289 ‘cfv 6543 Slot cslot 17266 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2738 ax-sep 5262 ax-nul 5274 ax-pr 5409 |
| 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 2100 df-mo 2570 df-eu 2600 df-clab 2745 df-cleq 2758 df-clel 2841 df-nfc 2915 df-ne 2962 df-ral 3083 df-rex 3093 df-rab 3420 df-v 3460 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-nul 4290 df-if 4493 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4878 df-br 5115 df-opab 5179 df-mpt 5198 df-id 5561 df-xp 5672 df-rel 5673 df-cnv 5674 df-co 5675 df-dm 5676 df-iota 6499 df-fun 6545 df-fv 6551 df-slot 17267 |
| This theorem is used by: strfvi 17275 setsnid 17293 base0 17299 resseqnbas 17327 oppchomfval 17795 fuchom 18046 xpchomfval 18260 xpccofval 18263 oduleval 18370 0pos 18402 frmdplusg 18944 efmndplusg 18970 oppgplusfval 19449 mgpplusg 20251 opprmulfval 20454 sralem 21334 srasca 21338 sravsca 21339 sraip 21340 zlmlem 21703 zlmvsca 21708 thlle 21884 thloc 21886 psrplusg 22124 psrmulr 22129 psrvscafval 22135 opsrle 22235 ply1plusgfvi 22438 psr1sca2 22447 ply1sca2 22450 resstopn 23380 tnglem 24834 tngds 24842 ttglem 29262 iedgval0 29427 resvlem 33684 sn-base0 43310 mendplusgfval 43949 mendmulrfval 43951 mendsca 43953 mendvscafval 43954 catcrcl 50214 |
| Copyright terms: Public domain | W3C validator |