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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 9337 | . . . 4 ⊢ Rel finSupp | |
| 2 | fsuppss.2 | . . . 4 ⊢ (𝜑 → 𝐺 finSupp 𝑍) | |
| 3 | brrelex1 5712 | . . . 4 ⊢ ((Rel finSupp ∧ 𝐺 finSupp 𝑍) → 𝐺 ∈ V) | |
| 4 | 1, 2, 3 | sylancr 599 | . . 3 ⊢ (𝜑 → 𝐺 ∈ V) |
| 5 | fsuppss.1 | . . 3 ⊢ (𝜑 → 𝐹 ⊆ 𝐺) | |
| 6 | 4, 5 | ssexd 5293 | . 2 ⊢ (𝜑 → 𝐹 ∈ V) |
| 7 | brrelex2 5713 | . . 3 ⊢ ((Rel finSupp ∧ 𝐺 finSupp 𝑍) → 𝑍 ∈ V) | |
| 8 | 1, 2, 7 | sylancr 599 | . 2 ⊢ (𝜑 → 𝑍 ∈ V) |
| 9 | 2 | fsuppfund 9344 | . . 3 ⊢ (𝜑 → Fun 𝐺) |
| 10 | funss 6556 | . . 3 ⊢ (𝐹 ⊆ 𝐺 → (Fun 𝐺 → Fun 𝐹)) | |
| 11 | 5, 9, 10 | sylc 66 | . 2 ⊢ (𝜑 → Fun 𝐹) |
| 12 | funsssuppss 8192 | . . 3 ⊢ ((Fun 𝐺 ∧ 𝐹 ⊆ 𝐺 ∧ 𝐺 ∈ V) → (𝐹 supp 𝑍) ⊆ (𝐺 supp 𝑍)) | |
| 13 | 9, 5, 4, 12 | syl3anc 1398 | . 2 ⊢ (𝜑 → (𝐹 supp 𝑍) ⊆ (𝐺 supp 𝑍)) |
| 14 | 6, 8, 11, 2, 13 | fsuppsssuppgd 9356 | 1 ⊢ (𝜑 → 𝐹 finSupp 𝑍) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2145 Vcvv 3453 ⊆ wss 3902 class class class wbr 5107 Rel wrel 5664 Fun wfun 6531 (class class class)co 7417 supp csupp 8162 finSupp cfsupp 9335 |
| 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-rep 5236 ax-sep 5255 ax-nul 5267 ax-pr 5402 ax-un 7740 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 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-reu 3368 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-iun 4956 df-br 5108 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5554 df-eprel 5559 df-po 5567 df-so 5568 df-fr 5612 df-we 5614 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-ov 7420 df-oprab 7421 df-mpo 7422 df-om 7867 df-supp 8163 df-1o 8459 df-en 8957 df-fin 8960 df-fsupp 9336 |
| This theorem is used by: mhphf 43451 |
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