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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 8145 | . . 3 ⊢ (𝑍 ∈ 𝑉 → (∅ supp 𝑍) = ∅) | |
| 2 | 0fi 9023 | . . 3 ⊢ ∅ ∈ Fin | |
| 3 | 1, 2 | eqeltrdi 2870 | . 2 ⊢ (𝑍 ∈ 𝑉 → (∅ supp 𝑍) ∈ Fin) |
| 4 | fun0 6586 | . . 3 ⊢ Fun ∅ | |
| 5 | 0ex 5257 | . . 3 ⊢ ∅ ∈ V | |
| 6 | funisfsupp 9313 | . . 3 ⊢ ((Fun ∅ ∧ ∅ ∈ V ∧ 𝑍 ∈ 𝑉) → (∅ finSupp 𝑍 ↔ (∅ supp 𝑍) ∈ Fin)) | |
| 7 | 4, 5, 6 | mp3an12 1472 | . 2 ⊢ (𝑍 ∈ 𝑉 → (∅ finSupp 𝑍 ↔ (∅ supp 𝑍) ∈ Fin)) |
| 8 | 3, 7 | mpbird 259 | 1 ⊢ (𝑍 ∈ 𝑉 → ∅ finSupp 𝑍) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 208 ∈ wcel 2142 Vcvv 3454 ∅c0 4285 class class class wbr 5100 Fun wfun 6515 (class class class)co 7396 supp csupp 8140 Fincfn 8927 finSupp cfsupp 9307 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-sep 5246 ax-nul 5256 ax-pr 5390 ax-un 7718 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1099 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-nf 1804 df-sb 2091 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3077 df-rex 3087 df-rab 3415 df-v 3456 df-sbc 3745 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4481 df-pw 4557 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-opab 5163 df-tr 5208 df-id 5542 df-eprel 5547 df-po 5555 df-so 5556 df-fr 5600 df-we 5602 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-ord 6349 df-on 6350 df-lim 6351 df-iota 6477 df-fun 6523 df-fn 6524 df-f 6525 df-f1 6526 df-fo 6527 df-f1o 6528 df-fv 6529 df-ov 7399 df-oprab 7400 df-mpo 7401 df-om 7847 df-supp 8141 df-en 8928 df-fin 8931 df-fsupp 9308 |
| This theorem is referenced by: lco0 49046 |
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