Theorem suppss2 8150

Description: Show that the support of a function is contained in a set. (Contributed by Mario Carneiro, 19-Dec-2014.) (Revised by Mario Carneiro, 22-Mar-2015.) (Revised by AV, 28-May-2019.)

Hypotheses

Ref	Expression
suppss2.n	⊢ ((𝜑 ∧ 𝑘 ∈ (𝐴 ∖ 𝑊)) → 𝐵 = 𝑍)
suppss2.a	⊢ (𝜑 → 𝐴 ∈ 𝑉)

Assertion

Ref	Expression
suppss2	⊢ (𝜑 → ((𝑘 ∈ 𝐴 ↦ 𝐵) supp 𝑍) ⊆ 𝑊)

Distinct variable groups:   𝐴,𝑘   𝜑,𝑘   𝑘,𝑊   𝑘,𝑍

Allowed substitution hints:   𝐵(𝑘)   𝑉(𝑘)

Proof of Theorem suppss2

Step	Hyp	Ref	Expression
1		eqid 2736	. . . . 5 ⊢ (𝑘 ∈ 𝐴 ↦ 𝐵) = (𝑘 ∈ 𝐴 ↦ 𝐵)
2		suppss2.a	. . . . . 6 ⊢ (𝜑 → 𝐴 ∈ 𝑉)
3	2	adantl 481	. . . . 5 ⊢ ((𝑍 ∈ V ∧ 𝜑) → 𝐴 ∈ 𝑉)
4		simpl 482	. . . . 5 ⊢ ((𝑍 ∈ V ∧ 𝜑) → 𝑍 ∈ V)
5	1, 3, 4	mptsuppdifd 8136	. . . 4 ⊢ ((𝑍 ∈ V ∧ 𝜑) → ((𝑘 ∈ 𝐴 ↦ 𝐵) supp 𝑍) = {𝑘 ∈ 𝐴 ∣ 𝐵 ∈ (V ∖ {𝑍})})
6		eldifsni 4735	. . . . . . 7 ⊢ (𝐵 ∈ (V ∖ {𝑍}) → 𝐵 ≠ 𝑍)
7		eldif 3899	. . . . . . . . . 10 ⊢ (𝑘 ∈ (𝐴 ∖ 𝑊) ↔ (𝑘 ∈ 𝐴 ∧ ¬ 𝑘 ∈ 𝑊))
8		suppss2.n	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐴 ∖ 𝑊)) → 𝐵 = 𝑍)
9	8	adantll 715	. . . . . . . . . 10 ⊢ (((𝑍 ∈ V ∧ 𝜑) ∧ 𝑘 ∈ (𝐴 ∖ 𝑊)) → 𝐵 = 𝑍)
10	7, 9	sylan2br 596	. . . . . . . . 9 ⊢ (((𝑍 ∈ V ∧ 𝜑) ∧ (𝑘 ∈ 𝐴 ∧ ¬ 𝑘 ∈ 𝑊)) → 𝐵 = 𝑍)
11	10	expr 456	. . . . . . . 8 ⊢ (((𝑍 ∈ V ∧ 𝜑) ∧ 𝑘 ∈ 𝐴) → (¬ 𝑘 ∈ 𝑊 → 𝐵 = 𝑍))
12	11	necon1ad 2949	. . . . . . 7 ⊢ (((𝑍 ∈ V ∧ 𝜑) ∧ 𝑘 ∈ 𝐴) → (𝐵 ≠ 𝑍 → 𝑘 ∈ 𝑊))
13	6, 12	syl5 34	. . . . . 6 ⊢ (((𝑍 ∈ V ∧ 𝜑) ∧ 𝑘 ∈ 𝐴) → (𝐵 ∈ (V ∖ {𝑍}) → 𝑘 ∈ 𝑊))
14	13	3impia 1118	. . . . 5 ⊢ (((𝑍 ∈ V ∧ 𝜑) ∧ 𝑘 ∈ 𝐴 ∧ 𝐵 ∈ (V ∖ {𝑍})) → 𝑘 ∈ 𝑊)
15	14	rabssdv 4014	. . . 4 ⊢ ((𝑍 ∈ V ∧ 𝜑) → {𝑘 ∈ 𝐴 ∣ 𝐵 ∈ (V ∖ {𝑍})} ⊆ 𝑊)
16	5, 15	eqsstrd 3956	. . 3 ⊢ ((𝑍 ∈ V ∧ 𝜑) → ((𝑘 ∈ 𝐴 ↦ 𝐵) supp 𝑍) ⊆ 𝑊)
17	16	ex 412	. 2 ⊢ (𝑍 ∈ V → (𝜑 → ((𝑘 ∈ 𝐴 ↦ 𝐵) supp 𝑍) ⊆ 𝑊))
18		id 22	. . . . . 6 ⊢ (¬ 𝑍 ∈ V → ¬ 𝑍 ∈ V)
19	18	intnand 488	. . . . 5 ⊢ (¬ 𝑍 ∈ V → ¬ ((𝑘 ∈ 𝐴 ↦ 𝐵) ∈ V ∧ 𝑍 ∈ V))
20		supp0prc 8113	. . . . 5 ⊢ (¬ ((𝑘 ∈ 𝐴 ↦ 𝐵) ∈ V ∧ 𝑍 ∈ V) → ((𝑘 ∈ 𝐴 ↦ 𝐵) supp 𝑍) = ∅)
21	19, 20	syl 17	. . . 4 ⊢ (¬ 𝑍 ∈ V → ((𝑘 ∈ 𝐴 ↦ 𝐵) supp 𝑍) = ∅)
22		0ss 4340	. . . 4 ⊢ ∅ ⊆ 𝑊
23	21, 22	eqsstrdi 3966	. . 3 ⊢ (¬ 𝑍 ∈ V → ((𝑘 ∈ 𝐴 ↦ 𝐵) supp 𝑍) ⊆ 𝑊)
24	23	a1d 25	. 2 ⊢ (¬ 𝑍 ∈ V → (𝜑 → ((𝑘 ∈ 𝐴 ↦ 𝐵) supp 𝑍) ⊆ 𝑊))
25	17, 24	pm2.61i 182	1 ⊢ (𝜑 → ((𝑘 ∈ 𝐴 ↦ 𝐵) supp 𝑍) ⊆ 𝑊)

Syntax hints:  ¬ wn 3   → wi 4   ∧ wa 395   = wceq 1542   ∈ wcel 2114   ≠ wne 2932  {crab 3389  Vcvv 3429   ∖ cdif 3886   ⊆ wss 3889  ∅c0 4273  {csn 4567   ↦ cmpt 5166  (class class class)co 7367   supp csupp 8110

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2708  ax-rep 5212  ax-sep 5231  ax-nul 5241  ax-pr 5375  ax-un 7689

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2539  df-eu 2569  df-clab 2715  df-cleq 2728  df-clel 2811  df-nfc 2885  df-ne 2933  df-ral 3052  df-rex 3062  df-reu 3343  df-rab 3390  df-v 3431  df-sbc 3729  df-csb 3838  df-dif 3892  df-un 3894  df-in 3896  df-ss 3906  df-nul 4274  df-if 4467  df-pw 4543  df-sn 4568  df-pr 4570  df-op 4574  df-uni 4851  df-iun 4935  df-br 5086  df-opab 5148  df-mpt 5167  df-id 5526  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-iota 6454  df-fun 6500  df-fn 6501  df-f 6502  df-f1 6503  df-fo 6504  df-f1o 6505  df-fv 6506  df-ov 7370  df-oprab 7371  df-mpo 7372  df-supp 8111

This theorem is referenced by:  suppsssn  8151  fsuppmptif  9312  sniffsupp  9313  cantnflem1d  9609  cantnflem1  9610  gsumzsplit  19902  gsummpt1n0  19940  gsum2dlem1  19945  gsum2dlem2  19946  gsum2d  19947  dprdfid  19994  dprdfinv  19996  dprdfadd  19997  dmdprdsplitlem  20014  dpjidcl  20035  uvcff  21771  uvcresum  21773  psrlidm  21940  psrridm  21941  mplsubrg  21983  mplmon  22013  mplmonmul  22014  mplcoe1  22015  mplcoe5  22018  mplbas2  22020  evlslem4  22054  evlslem2  22057  evlslem3  22058  evlslem1  22060  evlsvvvallem  22069  evlsvvvallem2  22070  evlsvvval  22071  coe1tmmul2  22241  coe1tmmul  22242  evls1fpws  22334  tsmssplit  24117  coe1mul3  26064  plypf1  26177  tayl0  26327  suppss2f  32711  suppss3  32796  gsummptres2  33114  gsummptfsres  33115  elrgspnlem1  33303  elrgspnlem2  33304  elrgspnlem3  33305  elrgspnsubrunlem2  33309  elrspunidl  33488  elrspunsn  33489  psrmonmul  33694  fedgmullem2  33774  fldextrspunlsp  33818  evlsbagval  43002  selvvvval  43018  evlselv  43020  mhpind  43027  evlsmhpvvval  43028