Theorem fsuppsssuppgd 9451

Description: If the support of a function is a subset of a finite support, it is finite. Deduction associated with fsuppsssupp 9450. (Contributed by SN, 6-Mar-2025.)

Hypotheses

Ref	Expression
fsuppsssuppgd.g	⊢ (𝜑 → 𝐺 ∈ 𝑉)
fsuppsssuppgd.z	⊢ (𝜑 → 𝑍 ∈ 𝑊)
fsuppsssuppgd.1	⊢ (𝜑 → Fun 𝐺)
fsuppsssuppgd.2	⊢ (𝜑 → 𝐹 finSupp 𝑂)
fsuppsssuppgd.3	⊢ (𝜑 → (𝐺 supp 𝑍) ⊆ (𝐹 supp 𝑂))

Assertion

Ref	Expression
fsuppsssuppgd	⊢ (𝜑 → 𝐺 finSupp 𝑍)

Proof of Theorem fsuppsssuppgd

Step	Hyp	Ref	Expression
1		fsuppsssuppgd.g	. 2 ⊢ (𝜑 → 𝐺 ∈ 𝑉)
2		fsuppsssuppgd.1	. 2 ⊢ (𝜑 → Fun 𝐺)
3		fsuppsssuppgd.z	. 2 ⊢ (𝜑 → 𝑍 ∈ 𝑊)
4		fsuppsssuppgd.2	. . 3 ⊢ (𝜑 → 𝐹 finSupp 𝑂)
5	4	fsuppimpd 9439	. 2 ⊢ (𝜑 → (𝐹 supp 𝑂) ∈ Fin)
6		fsuppsssuppgd.3	. 2 ⊢ (𝜑 → (𝐺 supp 𝑍) ⊆ (𝐹 supp 𝑂))
7		suppssfifsupp 9449	. 2 ⊢ (((𝐺 ∈ 𝑉 ∧ Fun 𝐺 ∧ 𝑍 ∈ 𝑊) ∧ ((𝐹 supp 𝑂) ∈ Fin ∧ (𝐺 supp 𝑍) ⊆ (𝐹 supp 𝑂))) → 𝐺 finSupp 𝑍)
8	1, 2, 3, 5, 6, 7	syl32anc 1378	1 ⊢ (𝜑 → 𝐺 finSupp 𝑍)

Syntax hints:   → wi 4   ∈ wcel 2108   ⊆ wss 3976   class class class wbr 5166  Fun wfun 6567  (class class class)co 7448   supp csupp 8201  Fincfn 9003   finSupp cfsupp 9431

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1793  ax-4 1807  ax-5 1909  ax-6 1967  ax-7 2007  ax-8 2110  ax-9 2118  ax-10 2141  ax-11 2158  ax-12 2178  ax-ext 2711  ax-sep 5317  ax-nul 5324  ax-pr 5447  ax-un 7770

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 847  df-3or 1088  df-3an 1089  df-tru 1540  df-fal 1550  df-ex 1778  df-nf 1782  df-sb 2065  df-mo 2543  df-eu 2572  df-clab 2718  df-cleq 2732  df-clel 2819  df-nfc 2895  df-ne 2947  df-ral 3068  df-rex 3077  df-reu 3389  df-rab 3444  df-v 3490  df-sbc 3805  df-dif 3979  df-un 3981  df-in 3983  df-ss 3993  df-pss 3996  df-nul 4353  df-if 4549  df-pw 4624  df-sn 4649  df-pr 4651  df-op 4655  df-uni 4932  df-br 5167  df-opab 5229  df-tr 5284  df-id 5593  df-eprel 5599  df-po 5607  df-so 5608  df-fr 5652  df-we 5654  df-xp 5706  df-rel 5707  df-cnv 5708  df-co 5709  df-dm 5710  df-rn 5711  df-res 5712  df-ima 5713  df-ord 6398  df-on 6399  df-lim 6400  df-suc 6401  df-iota 6525  df-fun 6575  df-fn 6576  df-f 6577  df-f1 6578  df-fo 6579  df-f1o 6580  df-fv 6581  df-ov 7451  df-om 7904  df-1o 8522  df-en 9004  df-fin 9007  df-fsupp 9432

This theorem is referenced by:  fsuppss  9452  fsuppssov1  9453  evlsvvvallem  42516  evlsvvvallem2  42517  evlsvvval  42518  selvvvval  42540  evlselv  42542  mhphf  42552