Theorem domnmsuppn0 44410

Description: The support of a mapping of a multiplication of a nonzero constant with a function into a (ring theoretic) domain equals the support of the function. (Contributed by AV, 11-Apr-2019.)

Hypothesis

Ref	Expression
rmsuppss.r	⊢ 𝑅 = (Base‘𝑀)

Assertion

Ref	Expression
domnmsuppn0	⊢ (((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) → ((𝑣 ∈ 𝑉 ↦ (𝐶(.r‘𝑀)(𝐴‘𝑣))) supp (0g‘𝑀)) = (𝐴 supp (0g‘𝑀)))

Distinct variable groups:   𝑣,𝐴   𝑣,𝐶   𝑣,𝑀   𝑣,𝑅   𝑣,𝑋   𝑣,𝑉

Proof of Theorem domnmsuppn0

Dummy variable 𝑤 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		elmapi 8422	. . . . 5 ⊢ (𝐴 ∈ (𝑅 ↑m 𝑉) → 𝐴:𝑉⟶𝑅)
2		fdm 6517	. . . . . 6 ⊢ (𝐴:𝑉⟶𝑅 → dom 𝐴 = 𝑉)
3	2	eqcomd 2827	. . . . 5 ⊢ (𝐴:𝑉⟶𝑅 → 𝑉 = dom 𝐴)
4	1, 3	syl 17	. . . 4 ⊢ (𝐴 ∈ (𝑅 ↑m 𝑉) → 𝑉 = dom 𝐴)
5	4	3ad2ant3 1131	. . 3 ⊢ (((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) → 𝑉 = dom 𝐴)
6		oveq2 7158	. . . . . . 7 ⊢ ((𝐴‘𝑤) = (0g‘𝑀) → (𝐶(.r‘𝑀)(𝐴‘𝑤)) = (𝐶(.r‘𝑀)(0g‘𝑀)))
7		domnring 20063	. . . . . . . . . . . 12 ⊢ (𝑀 ∈ Domn → 𝑀 ∈ Ring)
8	7	adantr 483	. . . . . . . . . . 11 ⊢ ((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) → 𝑀 ∈ Ring)
9		simpl 485	. . . . . . . . . . 11 ⊢ ((𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) → 𝐶 ∈ 𝑅)
10	8, 9	anim12i 614	. . . . . . . . . 10 ⊢ (((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀))) → (𝑀 ∈ Ring ∧ 𝐶 ∈ 𝑅))
11	10	3adant3 1128	. . . . . . . . 9 ⊢ (((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) → (𝑀 ∈ Ring ∧ 𝐶 ∈ 𝑅))
12		rmsuppss.r	. . . . . . . . . 10 ⊢ 𝑅 = (Base‘𝑀)
13		eqid 2821	. . . . . . . . . 10 ⊢ (.r‘𝑀) = (.r‘𝑀)
14		eqid 2821	. . . . . . . . . 10 ⊢ (0g‘𝑀) = (0g‘𝑀)
15	12, 13, 14	ringrz 19332	. . . . . . . . 9 ⊢ ((𝑀 ∈ Ring ∧ 𝐶 ∈ 𝑅) → (𝐶(.r‘𝑀)(0g‘𝑀)) = (0g‘𝑀))
16	11, 15	syl 17	. . . . . . . 8 ⊢ (((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) → (𝐶(.r‘𝑀)(0g‘𝑀)) = (0g‘𝑀))
17	16	adantr 483	. . . . . . 7 ⊢ ((((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) ∧ 𝑤 ∈ 𝑉) → (𝐶(.r‘𝑀)(0g‘𝑀)) = (0g‘𝑀))
18	6, 17	sylan9eqr 2878	. . . . . 6 ⊢ (((((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) ∧ 𝑤 ∈ 𝑉) ∧ (𝐴‘𝑤) = (0g‘𝑀)) → (𝐶(.r‘𝑀)(𝐴‘𝑤)) = (0g‘𝑀))
19	18	ex 415	. . . . 5 ⊢ ((((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) ∧ 𝑤 ∈ 𝑉) → ((𝐴‘𝑤) = (0g‘𝑀) → (𝐶(.r‘𝑀)(𝐴‘𝑤)) = (0g‘𝑀)))
20	19	necon3d 3037	. . . 4 ⊢ ((((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) ∧ 𝑤 ∈ 𝑉) → ((𝐶(.r‘𝑀)(𝐴‘𝑤)) ≠ (0g‘𝑀) → (𝐴‘𝑤) ≠ (0g‘𝑀)))
21		simpl1l 1220	. . . . . . 7 ⊢ ((((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) ∧ 𝑤 ∈ 𝑉) → 𝑀 ∈ Domn)
22	21	adantr 483	. . . . . 6 ⊢ (((((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) ∧ 𝑤 ∈ 𝑉) ∧ (𝐴‘𝑤) ≠ (0g‘𝑀)) → 𝑀 ∈ Domn)
23		simpll2 1209	. . . . . 6 ⊢ (((((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) ∧ 𝑤 ∈ 𝑉) ∧ (𝐴‘𝑤) ≠ (0g‘𝑀)) → (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)))
24		ffvelrn 6844	. . . . . . . . . . 11 ⊢ ((𝐴:𝑉⟶𝑅 ∧ 𝑤 ∈ 𝑉) → (𝐴‘𝑤) ∈ 𝑅)
25	24	ex 415	. . . . . . . . . 10 ⊢ (𝐴:𝑉⟶𝑅 → (𝑤 ∈ 𝑉 → (𝐴‘𝑤) ∈ 𝑅))
26	1, 25	syl 17	. . . . . . . . 9 ⊢ (𝐴 ∈ (𝑅 ↑m 𝑉) → (𝑤 ∈ 𝑉 → (𝐴‘𝑤) ∈ 𝑅))
27	26	3ad2ant3 1131	. . . . . . . 8 ⊢ (((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) → (𝑤 ∈ 𝑉 → (𝐴‘𝑤) ∈ 𝑅))
28	27	imp 409	. . . . . . 7 ⊢ ((((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) ∧ 𝑤 ∈ 𝑉) → (𝐴‘𝑤) ∈ 𝑅)
29	28	adantr 483	. . . . . 6 ⊢ (((((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) ∧ 𝑤 ∈ 𝑉) ∧ (𝐴‘𝑤) ≠ (0g‘𝑀)) → (𝐴‘𝑤) ∈ 𝑅)
30		simpr 487	. . . . . 6 ⊢ (((((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) ∧ 𝑤 ∈ 𝑉) ∧ (𝐴‘𝑤) ≠ (0g‘𝑀)) → (𝐴‘𝑤) ≠ (0g‘𝑀))
31	12, 13, 14	domnmuln0 20065	. . . . . 6 ⊢ ((𝑀 ∈ Domn ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ ((𝐴‘𝑤) ∈ 𝑅 ∧ (𝐴‘𝑤) ≠ (0g‘𝑀))) → (𝐶(.r‘𝑀)(𝐴‘𝑤)) ≠ (0g‘𝑀))
32	22, 23, 29, 30, 31	syl112anc 1370	. . . . 5 ⊢ (((((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) ∧ 𝑤 ∈ 𝑉) ∧ (𝐴‘𝑤) ≠ (0g‘𝑀)) → (𝐶(.r‘𝑀)(𝐴‘𝑤)) ≠ (0g‘𝑀))
33	32	ex 415	. . . 4 ⊢ ((((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) ∧ 𝑤 ∈ 𝑉) → ((𝐴‘𝑤) ≠ (0g‘𝑀) → (𝐶(.r‘𝑀)(𝐴‘𝑤)) ≠ (0g‘𝑀)))
34	20, 33	impbid 214	. . 3 ⊢ ((((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) ∧ 𝑤 ∈ 𝑉) → ((𝐶(.r‘𝑀)(𝐴‘𝑤)) ≠ (0g‘𝑀) ↔ (𝐴‘𝑤) ≠ (0g‘𝑀)))
35	5, 34	rabeqbidva 3487	. 2 ⊢ (((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) → {𝑤 ∈ 𝑉 ∣ (𝐶(.r‘𝑀)(𝐴‘𝑤)) ≠ (0g‘𝑀)} = {𝑤 ∈ dom 𝐴 ∣ (𝐴‘𝑤) ≠ (0g‘𝑀)})
36		fveq2 6665	. . . . 5 ⊢ (𝑣 = 𝑤 → (𝐴‘𝑣) = (𝐴‘𝑤))
37	36	oveq2d 7166	. . . 4 ⊢ (𝑣 = 𝑤 → (𝐶(.r‘𝑀)(𝐴‘𝑣)) = (𝐶(.r‘𝑀)(𝐴‘𝑤)))
38	37	cbvmptv 5162	. . 3 ⊢ (𝑣 ∈ 𝑉 ↦ (𝐶(.r‘𝑀)(𝐴‘𝑣))) = (𝑤 ∈ 𝑉 ↦ (𝐶(.r‘𝑀)(𝐴‘𝑤)))
39		simp1r 1194	. . 3 ⊢ (((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) → 𝑉 ∈ 𝑋)
40		fvexd 6680	. . 3 ⊢ (((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) → (0g‘𝑀) ∈ V)
41		ovexd 7185	. . 3 ⊢ ((((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) ∧ 𝑤 ∈ 𝑉) → (𝐶(.r‘𝑀)(𝐴‘𝑤)) ∈ V)
42	38, 39, 40, 41	mptsuppd 7847	. 2 ⊢ (((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) → ((𝑣 ∈ 𝑉 ↦ (𝐶(.r‘𝑀)(𝐴‘𝑣))) supp (0g‘𝑀)) = {𝑤 ∈ 𝑉 ∣ (𝐶(.r‘𝑀)(𝐴‘𝑤)) ≠ (0g‘𝑀)})
43		elmapfun 8424	. . . 4 ⊢ (𝐴 ∈ (𝑅 ↑m 𝑉) → Fun 𝐴)
44	43	3ad2ant3 1131	. . 3 ⊢ (((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) → Fun 𝐴)
45		simp3 1134	. . 3 ⊢ (((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) → 𝐴 ∈ (𝑅 ↑m 𝑉))
46		suppval1 7830	. . 3 ⊢ ((Fun 𝐴 ∧ 𝐴 ∈ (𝑅 ↑m 𝑉) ∧ (0g‘𝑀) ∈ V) → (𝐴 supp (0g‘𝑀)) = {𝑤 ∈ dom 𝐴 ∣ (𝐴‘𝑤) ≠ (0g‘𝑀)})
47	44, 45, 40, 46	syl3anc 1367	. 2 ⊢ (((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) → (𝐴 supp (0g‘𝑀)) = {𝑤 ∈ dom 𝐴 ∣ (𝐴‘𝑤) ≠ (0g‘𝑀)})
48	35, 42, 47	3eqtr4d 2866	1 ⊢ (((𝑀 ∈ Domn ∧ 𝑉 ∈ 𝑋) ∧ (𝐶 ∈ 𝑅 ∧ 𝐶 ≠ (0g‘𝑀)) ∧ 𝐴 ∈ (𝑅 ↑m 𝑉)) → ((𝑣 ∈ 𝑉 ↦ (𝐶(.r‘𝑀)(𝐴‘𝑣))) supp (0g‘𝑀)) = (𝐴 supp (0g‘𝑀)))

Syntax hints:   → wi 4   ∧ wa 398   ∧ w3a 1083   = wceq 1533   ∈ wcel 2110   ≠ wne 3016  {crab 3142  Vcvv 3495   ↦ cmpt 5139  dom cdm 5550  Fun wfun 6344  ⟶wf 6346  ‘cfv 6350  (class class class)co 7150   supp csupp 7824   ↑_m cmap 8400  Basecbs 16477  ._rcmulr 16560  0_gc0g 16707  Ringcrg 19291  Domncdomn 20047

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1792  ax-4 1806  ax-5 1907  ax-6 1966  ax-7 2011  ax-8 2112  ax-9 2120  ax-10 2141  ax-11 2156  ax-12 2172  ax-ext 2793  ax-rep 5183  ax-sep 5196  ax-nul 5203  ax-pow 5259  ax-pr 5322  ax-un 7455  ax-cnex 10587  ax-resscn 10588  ax-1cn 10589  ax-icn 10590  ax-addcl 10591  ax-addrcl 10592  ax-mulcl 10593  ax-mulrcl 10594  ax-mulcom 10595  ax-addass 10596  ax-mulass 10597  ax-distr 10598  ax-i2m1 10599  ax-1ne0 10600  ax-1rid 10601  ax-rnegex 10602  ax-rrecex 10603  ax-cnre 10604  ax-pre-lttri 10605  ax-pre-lttrn 10606  ax-pre-ltadd 10607  ax-pre-mulgt0 10608

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1084  df-3an 1085  df-tru 1536  df-ex 1777  df-nf 1781  df-sb 2066  df-mo 2618  df-eu 2650  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ne 3017  df-nel 3124  df-ral 3143  df-rex 3144  df-reu 3145  df-rmo 3146  df-rab 3147  df-v 3497  df-sbc 3773  df-csb 3884  df-dif 3939  df-un 3941  df-in 3943  df-ss 3952  df-pss 3954  df-nul 4292  df-if 4468  df-pw 4541  df-sn 4562  df-pr 4564  df-tp 4566  df-op 4568  df-uni 4833  df-iun 4914  df-br 5060  df-opab 5122  df-mpt 5140  df-tr 5166  df-id 5455  df-eprel 5460  df-po 5469  df-so 5470  df-fr 5509  df-we 5511  df-xp 5556  df-rel 5557  df-cnv 5558  df-co 5559  df-dm 5560  df-rn 5561  df-res 5562  df-ima 5563  df-pred 6143  df-ord 6189  df-on 6190  df-lim 6191  df-suc 6192  df-iota 6309  df-fun 6352  df-fn 6353  df-f 6354  df-f1 6355  df-fo 6356  df-f1o 6357  df-fv 6358  df-riota 7108  df-ov 7153  df-oprab 7154  df-mpo 7155  df-om 7575  df-1st 7683  df-2nd 7684  df-supp 7825  df-wrecs 7941  df-recs 8002  df-rdg 8040  df-er 8283  df-map 8402  df-en 8504  df-dom 8505  df-sdom 8506  df-pnf 10671  df-mnf 10672  df-xr 10673  df-ltxr 10674  df-le 10675  df-sub 10866  df-neg 10867  df-nn 11633  df-2 11694  df-ndx 16480  df-slot 16481  df-base 16483  df-sets 16484  df-plusg 16572  df-0g 16709  df-mgm 17846  df-sgrp 17895  df-mnd 17906  df-grp 18100  df-minusg 18101  df-mgp 19234  df-ring 19293  df-nzr 20025  df-domn 20051

This theorem is referenced by: (None)