| 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 5242 | . . 3 ⊢ ∅ ∈ V | |
| 2 | str0.a | . . 3 ⊢ 𝐹 = Slot 𝐼 | |
| 3 | 1, 2 | strfvn 17156 | . 2 ⊢ (𝐹‘∅) = (∅‘𝐼) |
| 4 | 0fv 6881 | . 2 ⊢ (∅‘𝐼) = ∅ | |
| 5 | 3, 4 | eqtr2i 2760 | 1 ⊢ ∅ = (𝐹‘∅) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 ∅c0 4273 ‘cfv 6498 Slot cslot 17151 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2708 ax-sep 5231 ax-nul 5241 ax-pr 5375 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3062 df-rab 3390 df-v 3431 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-nul 4274 df-if 4467 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-br 5086 df-opab 5148 df-mpt 5167 df-id 5526 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-iota 6454 df-fun 6500 df-fv 6506 df-slot 17152 |
| This theorem is referenced by: strfvi 17160 setsnid 17178 base0 17184 resseqnbas 17212 oppchomfval 17680 fuchom 17931 xpchomfval 18145 xpccofval 18148 oduleval 18255 0pos 18287 frmdplusg 18822 efmndplusg 18848 oppgplusfval 19323 mgpplusg 20125 opprmulfval 20319 sralem 21171 srasca 21175 sravsca 21176 sraip 21177 zlmlem 21496 zlmvsca 21501 thlle 21677 thloc 21679 psrplusg 21916 psrmulr 21921 psrvscafval 21927 opsrle 22025 ply1plusgfvi 22205 psr1sca2 22214 ply1sca2 22217 resstopn 23151 tnglem 24605 tngds 24613 ttglem 28944 iedgval0 29109 resvlem 33393 sn-base0 42940 mendplusgfval 43609 mendmulrfval 43611 mendsca 43613 mendvscafval 43614 catcrcl 49870 |
| Copyright terms: Public domain | W3C validator |