Theorem fsuppsssuppgd 9309

Description: If the support of a function is a subset of a finite support, it is finite. Deduction associated with fsuppsssupp 9308. (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 9296	. 2 ⊢ (𝜑 → (𝐹 supp 𝑂) ∈ Fin)
6		fsuppsssuppgd.3	. 2 ⊢ (𝜑 → (𝐺 supp 𝑍) ⊆ (𝐹 supp 𝑂))
7		suppssfifsupp 9307	. 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 1380	1 ⊢ (𝜑 → 𝐺 finSupp 𝑍)

Syntax hints:   → wi 4   ∈ wcel 2109   ⊆ wss 3911   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-reu 3352  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-suc 6326  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-om 7823  df-1o 8411  df-en 8896  df-fin 8899  df-fsupp 9289

This theorem is referenced by:  fsuppss  9310  fsuppssov1  9311  fisuppov1  32579  elrgspnlem1  33166  fldextrspunlsp  33642  evlsvvvallem  42522  evlsvvvallem2  42523  evlsvvval  42524  selvvvval  42546  evlselv  42548  mhphf  42558