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| Mirrors > Home > MPE Home > Th. List > fsuppss | Structured version Visualization version GIF version | ||
| Description: A subset of a finitely supported function is a finitely supported function. (Contributed by SN, 8-Mar-2025.) |
| Ref | Expression |
|---|---|
| fsuppss.1 | ⊢ (𝜑 → 𝐹 ⊆ 𝐺) |
| fsuppss.2 | ⊢ (𝜑 → 𝐺 finSupp 𝑍) |
| Ref | Expression |
|---|---|
| fsuppss | ⊢ (𝜑 → 𝐹 finSupp 𝑍) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | relfsupp 9273 | . . . 4 ⊢ Rel finSupp | |
| 2 | fsuppss.2 | . . . 4 ⊢ (𝜑 → 𝐺 finSupp 𝑍) | |
| 3 | brrelex1 5678 | . . . 4 ⊢ ((Rel finSupp ∧ 𝐺 finSupp 𝑍) → 𝐺 ∈ V) | |
| 4 | 1, 2, 3 | sylancr 593 | . . 3 ⊢ (𝜑 → 𝐺 ∈ V) |
| 5 | fsuppss.1 | . . 3 ⊢ (𝜑 → 𝐹 ⊆ 𝐺) | |
| 6 | 4, 5 | ssexd 5259 | . 2 ⊢ (𝜑 → 𝐹 ∈ V) |
| 7 | brrelex2 5679 | . . 3 ⊢ ((Rel finSupp ∧ 𝐺 finSupp 𝑍) → 𝑍 ∈ V) | |
| 8 | 1, 2, 7 | sylancr 593 | . 2 ⊢ (𝜑 → 𝑍 ∈ V) |
| 9 | 2 | fsuppfund 9280 | . . 3 ⊢ (𝜑 → Fun 𝐺) |
| 10 | funss 6511 | . . 3 ⊢ (𝐹 ⊆ 𝐺 → (Fun 𝐺 → Fun 𝐹)) | |
| 11 | 5, 9, 10 | sylc 65 | . 2 ⊢ (𝜑 → Fun 𝐹) |
| 12 | funsssuppss 8137 | . . 3 ⊢ ((Fun 𝐺 ∧ 𝐹 ⊆ 𝐺 ∧ 𝐺 ∈ V) → (𝐹 supp 𝑍) ⊆ (𝐺 supp 𝑍)) | |
| 13 | 9, 5, 4, 12 | syl3anc 1379 | . 2 ⊢ (𝜑 → (𝐹 supp 𝑍) ⊆ (𝐺 supp 𝑍)) |
| 14 | 6, 8, 11, 2, 13 | fsuppsssuppgd 9292 | 1 ⊢ (𝜑 → 𝐹 finSupp 𝑍) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2119 Vcvv 3432 ⊆ wss 3890 class class class wbr 5079 Rel wrel 5630 Fun wfun 6486 (class class class)co 7363 supp csupp 8107 finSupp cfsupp 9271 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2712 ax-rep 5206 ax-sep 5225 ax-nul 5235 ax-pr 5369 ax-un 7685 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2719 df-cleq 2732 df-clel 2815 df-nfc 2889 df-ne 2936 df-ral 3055 df-rex 3065 df-reu 3346 df-rab 3393 df-v 3434 df-sbc 3731 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4269 df-if 4462 df-pw 4538 df-sn 4563 df-pr 4565 df-op 4569 df-uni 4846 df-iun 4930 df-br 5080 df-opab 5142 df-mpt 5161 df-tr 5187 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-ov 7366 df-oprab 7367 df-mpo 7368 df-om 7814 df-supp 8108 df-1o 8402 df-en 8891 df-fin 8894 df-fsupp 9272 |
| This theorem is referenced by: mhphf 43054 |
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