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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 8121 | . . 3 ⊢ (𝑍 ∈ 𝑉 → (∅ supp 𝑍) = ∅) | |
| 2 | 0fi 8990 | . . 3 ⊢ ∅ ∈ Fin | |
| 3 | 1, 2 | eqeltrdi 2836 | . 2 ⊢ (𝑍 ∈ 𝑉 → (∅ supp 𝑍) ∈ Fin) |
| 4 | fun0 6565 | . . 3 ⊢ Fun ∅ | |
| 5 | 0ex 5257 | . . 3 ⊢ ∅ ∈ V | |
| 6 | funisfsupp 9294 | . . 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 2109 Vcvv 3444 ∅c0 4292 class class class wbr 5102 Fun wfun 6493 (class class class)co 7369 supp csupp 8116 Fincfn 8895 finSupp cfsupp 9288 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5246 ax-nul 5256 ax-pr 5382 ax-un 7691 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-ral 3045 df-rex 3054 df-rab 3403 df-v 3446 df-sbc 3751 df-dif 3914 df-un 3916 df-in 3918 df-ss 3928 df-pss 3931 df-nul 4293 df-if 4485 df-pw 4561 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4868 df-br 5103 df-opab 5165 df-tr 5210 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-ord 6323 df-on 6324 df-lim 6325 df-iota 6452 df-fun 6501 df-fn 6502 df-f 6503 df-f1 6504 df-fo 6505 df-f1o 6506 df-fv 6507 df-ov 7372 df-oprab 7373 df-mpo 7374 df-om 7823 df-supp 8117 df-en 8896 df-fin 8899 df-fsupp 9289 |
| This theorem is referenced by: lco0 48389 |
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