Theorem fsuppimp 8550

Description: Implications of a class being a finitely supported function (in relation to a given zero). (Contributed by AV, 26-May-2019.)

Assertion

Ref	Expression
fsuppimp	⊢ (𝑅 finSupp 𝑍 → (Fun 𝑅 ∧ (𝑅 supp 𝑍) ∈ Fin))

Proof of Theorem fsuppimp

Step	Hyp	Ref	Expression
1		relfsupp 8546	. . . 4 ⊢ Rel finSupp
2	1	brrelex1i 5393	. . 3 ⊢ (𝑅 finSupp 𝑍 → 𝑅 ∈ V)
3	1	brrelex2i 5394	. . 3 ⊢ (𝑅 finSupp 𝑍 → 𝑍 ∈ V)
4	2, 3	jca 509	. 2 ⊢ (𝑅 finSupp 𝑍 → (𝑅 ∈ V ∧ 𝑍 ∈ V))
5		isfsupp 8548	. . 3 ⊢ ((𝑅 ∈ V ∧ 𝑍 ∈ V) → (𝑅 finSupp 𝑍 ↔ (Fun 𝑅 ∧ (𝑅 supp 𝑍) ∈ Fin)))
6	5	biimpd 221	. 2 ⊢ ((𝑅 ∈ V ∧ 𝑍 ∈ V) → (𝑅 finSupp 𝑍 → (Fun 𝑅 ∧ (𝑅 supp 𝑍) ∈ Fin)))
7	4, 6	mpcom 38	1 ⊢ (𝑅 finSupp 𝑍 → (Fun 𝑅 ∧ (𝑅 supp 𝑍) ∈ Fin))

Syntax hints:   → wi 4   ∧ wa 386   ∈ wcel 2166  Vcvv 3414   class class class wbr 4873  Fun wfun 6117  (class class class)co 6905   supp csupp 7559  Fincfn 8222   finSupp cfsupp 8544

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1896  ax-4 1910  ax-5 2011  ax-6 2077  ax-7 2114  ax-9 2175  ax-10 2194  ax-11 2209  ax-12 2222  ax-13 2391  ax-ext 2803  ax-sep 5005  ax-nul 5013  ax-pr 5127

This theorem depends on definitions:  df-bi 199  df-an 387  df-or 881  df-3an 1115  df-tru 1662  df-ex 1881  df-nf 1885  df-sb 2070  df-mo 2605  df-eu 2640  df-clab 2812  df-cleq 2818  df-clel 2821  df-nfc 2958  df-ral 3122  df-rex 3123  df-rab 3126  df-v 3416  df-dif 3801  df-un 3803  df-in 3805  df-ss 3812  df-nul 4145  df-if 4307  df-sn 4398  df-pr 4400  df-op 4404  df-uni 4659  df-br 4874  df-opab 4936  df-xp 5348  df-rel 5349  df-cnv 5350  df-co 5351  df-iota 6086  df-fun 6125  df-fv 6131  df-ov 6908  df-fsupp 8545

This theorem is referenced by:  fsuppimpd  8551  fsuppunfi  8564  fsuppunbi  8565  fsuppres  8569  fsuppco  8576  oemapvali  8858  mptnn0fsuppr  13093  gsumzres  18663  gsumzf1o  18666