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| Mirrors > Home > MPE Home > Th. List > 0fsupp | Structured version Visualization version GIF version | ||
| Description: The empty set is a finitely supported function. (Contributed by AV, 19-Jul-2019.) |
| Ref | Expression |
|---|---|
| 0fsupp | ⊢ (𝑍 ∈ 𝑉 → ∅ finSupp 𝑍) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | supp0 8095 | . . 3 ⊢ (𝑍 ∈ 𝑉 → (∅ supp 𝑍) = ∅) | |
| 2 | 0fi 8964 | . . 3 ⊢ ∅ ∈ Fin | |
| 3 | 1, 2 | eqeltrdi 2839 | . 2 ⊢ (𝑍 ∈ 𝑉 → (∅ supp 𝑍) ∈ Fin) |
| 4 | fun0 6546 | . . 3 ⊢ Fun ∅ | |
| 5 | 0ex 5243 | . . 3 ⊢ ∅ ∈ V | |
| 6 | funisfsupp 9251 | . . 3 ⊢ ((Fun ∅ ∧ ∅ ∈ V ∧ 𝑍 ∈ 𝑉) → (∅ finSupp 𝑍 ↔ (∅ supp 𝑍) ∈ Fin)) | |
| 7 | 4, 5, 6 | mp3an12 1453 | . 2 ⊢ (𝑍 ∈ 𝑉 → (∅ finSupp 𝑍 ↔ (∅ supp 𝑍) ∈ Fin)) |
| 8 | 3, 7 | mpbird 257 | 1 ⊢ (𝑍 ∈ 𝑉 → ∅ finSupp 𝑍) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∈ wcel 2111 Vcvv 3436 ∅c0 4280 class class class wbr 5089 Fun wfun 6475 (class class class)co 7346 supp csupp 8090 Fincfn 8869 finSupp cfsupp 9245 |
| 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 5232 ax-nul 5242 ax-pr 5368 ax-un 7668 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 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-sbc 3737 df-dif 3900 df-un 3902 df-in 3904 df-ss 3914 df-pss 3917 df-nul 4281 df-if 4473 df-pw 4549 df-sn 4574 df-pr 4576 df-op 4580 df-uni 4857 df-br 5090 df-opab 5152 df-tr 5197 df-id 5509 df-eprel 5514 df-po 5522 df-so 5523 df-fr 5567 df-we 5569 df-xp 5620 df-rel 5621 df-cnv 5622 df-co 5623 df-dm 5624 df-rn 5625 df-res 5626 df-ima 5627 df-ord 6309 df-on 6310 df-lim 6311 df-iota 6437 df-fun 6483 df-fn 6484 df-f 6485 df-f1 6486 df-fo 6487 df-f1o 6488 df-fv 6489 df-ov 7349 df-oprab 7350 df-mpo 7351 df-om 7797 df-supp 8091 df-en 8870 df-fin 8873 df-fsupp 9246 |
| This theorem is referenced by: lco0 48527 |
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