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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 5268 | . . 3 ⊢ ∅ ∈ V | |
| 2 | str0.a | . . 3 ⊢ 𝐹 = Slot 𝐼 | |
| 3 | 1, 2 | strfvn 17284 | . 2 ⊢ (𝐹‘∅) = (∅‘𝐼) |
| 4 | 0fv 6923 | . 2 ⊢ (∅‘𝐼) = ∅ | |
| 5 | 3, 4 | eqtr2i 2786 | 1 ⊢ ∅ = (𝐹‘∅) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 ∅c0 4282 ‘cfv 6537 Slot cslot 17279 |
| 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 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2734 ax-sep 5255 ax-nul 5267 ax-pr 5402 |
| 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 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3079 df-rex 3089 df-rab 3415 df-v 3455 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4283 df-if 4486 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-br 5108 df-opab 5172 df-mpt 5191 df-id 5554 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-iota 6493 df-fun 6539 df-fv 6545 df-slot 17280 |
| This theorem is used by: strfvi 17288 setsnid 17306 base0 17312 resseqnbas 17340 oppchomfval 17808 fuchom 18059 xpchomfval 18273 xpccofval 18276 oduleval 18383 0pos 18415 frmdplusg 18969 efmndplusg 18995 oppgplusfval 19481 mgpplusg 20283 opprmulfval 20486 sralem 21366 srasca 21370 sravsca 21371 sraip 21372 zlmlem 21735 zlmvsca 21740 thlle 21916 thloc 21918 psrplusg 22158 psrmulr 22163 psrvscafval 22169 opsrle 22269 ply1plusgfvi 22472 psr1sca2 22481 ply1sca2 22484 resstopn 23417 tnglem 24872 tngds 24880 ttglem 29340 iedgval0 29505 resvlem 33781 sn-base0 43391 mendplusgfval 44030 mendmulrfval 44032 mendsca 44034 mendvscafval 44035 catcrcl 50329 |
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