Theorem mvrf1 19246

Description: The power series variable function is injective if the base ring is nonzero. (Contributed by Mario Carneiro, 29-Dec-2014.)

Hypotheses

Ref	Expression
mvrf.s	⊢ 𝑆 = (𝐼 mPwSer 𝑅)
mvrf.v	⊢ 𝑉 = (𝐼 mVar 𝑅)
mvrf.b	⊢ 𝐵 = (Base‘𝑆)
mvrf.i	⊢ (𝜑 → 𝐼 ∈ 𝑊)
mvrf.r	⊢ (𝜑 → 𝑅 ∈ Ring)
mvrf1.z	⊢ 0 = (0g‘𝑅)
mvrf1.o	⊢ 1 = (1r‘𝑅)
mvrf1.n	⊢ (𝜑 → 1 ≠ 0 )

Assertion

Ref	Expression
mvrf1	⊢ (𝜑 → 𝑉:𝐼–1-1→𝐵)

Proof of Theorem mvrf1

Dummy variables ℎ 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		mvrf.s	. . 3 ⊢ 𝑆 = (𝐼 mPwSer 𝑅)
2		mvrf.v	. . 3 ⊢ 𝑉 = (𝐼 mVar 𝑅)
3		mvrf.b	. . 3 ⊢ 𝐵 = (Base‘𝑆)
4		mvrf.i	. . 3 ⊢ (𝜑 → 𝐼 ∈ 𝑊)
5		mvrf.r	. . 3 ⊢ (𝜑 → 𝑅 ∈ Ring)
6	1, 2, 3, 4, 5	mvrf 19245	. 2 ⊢ (𝜑 → 𝑉:𝐼⟶𝐵)
7		mvrf1.n	. . . . . 6 ⊢ (𝜑 → 1 ≠ 0 )
8	7	adantr 480	. . . . 5 ⊢ ((𝜑 ∧ ((𝑥 ∈ 𝐼 ∧ 𝑦 ∈ 𝐼) ∧ (𝑉‘𝑥) = (𝑉‘𝑦))) → 1 ≠ 0 )
9		simp2r 1081	. . . . . . . . . 10 ⊢ ((𝜑 ∧ ((𝑥 ∈ 𝐼 ∧ 𝑦 ∈ 𝐼) ∧ (𝑉‘𝑥) = (𝑉‘𝑦)) ∧ ¬ 𝑥 = 𝑦) → (𝑉‘𝑥) = (𝑉‘𝑦))
10	9	fveq1d 6105	. . . . . . . . 9 ⊢ ((𝜑 ∧ ((𝑥 ∈ 𝐼 ∧ 𝑦 ∈ 𝐼) ∧ (𝑉‘𝑥) = (𝑉‘𝑦)) ∧ ¬ 𝑥 = 𝑦) → ((𝑉‘𝑥)‘(𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑥, 1, 0))) = ((𝑉‘𝑦)‘(𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑥, 1, 0))))
11		eqid 2610	. . . . . . . . . 10 ⊢ {ℎ ∈ (ℕ0 ↑𝑚 𝐼) ∣ (◡ℎ “ ℕ) ∈ Fin} = {ℎ ∈ (ℕ0 ↑𝑚 𝐼) ∣ (◡ℎ “ ℕ) ∈ Fin}
12		mvrf1.z	. . . . . . . . . 10 ⊢ 0 = (0g‘𝑅)
13		mvrf1.o	. . . . . . . . . 10 ⊢ 1 = (1r‘𝑅)
14	4	3ad2ant1 1075	. . . . . . . . . 10 ⊢ ((𝜑 ∧ ((𝑥 ∈ 𝐼 ∧ 𝑦 ∈ 𝐼) ∧ (𝑉‘𝑥) = (𝑉‘𝑦)) ∧ ¬ 𝑥 = 𝑦) → 𝐼 ∈ 𝑊)
15	5	3ad2ant1 1075	. . . . . . . . . 10 ⊢ ((𝜑 ∧ ((𝑥 ∈ 𝐼 ∧ 𝑦 ∈ 𝐼) ∧ (𝑉‘𝑥) = (𝑉‘𝑦)) ∧ ¬ 𝑥 = 𝑦) → 𝑅 ∈ Ring)
16		simp2ll 1121	. . . . . . . . . 10 ⊢ ((𝜑 ∧ ((𝑥 ∈ 𝐼 ∧ 𝑦 ∈ 𝐼) ∧ (𝑉‘𝑥) = (𝑉‘𝑦)) ∧ ¬ 𝑥 = 𝑦) → 𝑥 ∈ 𝐼)
17	2, 11, 12, 13, 14, 15, 16	mvrid 19244	. . . . . . . . 9 ⊢ ((𝜑 ∧ ((𝑥 ∈ 𝐼 ∧ 𝑦 ∈ 𝐼) ∧ (𝑉‘𝑥) = (𝑉‘𝑦)) ∧ ¬ 𝑥 = 𝑦) → ((𝑉‘𝑥)‘(𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑥, 1, 0))) = 1 )
18		simp2lr 1122	. . . . . . . . . 10 ⊢ ((𝜑 ∧ ((𝑥 ∈ 𝐼 ∧ 𝑦 ∈ 𝐼) ∧ (𝑉‘𝑥) = (𝑉‘𝑦)) ∧ ¬ 𝑥 = 𝑦) → 𝑦 ∈ 𝐼)
19		1nn0 11185	. . . . . . . . . . 11 ⊢ 1 ∈ ℕ0
20	11	snifpsrbag 19187	. . . . . . . . . . 11 ⊢ ((𝐼 ∈ 𝑊 ∧ 1 ∈ ℕ0) → (𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑥, 1, 0)) ∈ {ℎ ∈ (ℕ0 ↑𝑚 𝐼) ∣ (◡ℎ “ ℕ) ∈ Fin})
21	14, 19, 20	sylancl 693	. . . . . . . . . 10 ⊢ ((𝜑 ∧ ((𝑥 ∈ 𝐼 ∧ 𝑦 ∈ 𝐼) ∧ (𝑉‘𝑥) = (𝑉‘𝑦)) ∧ ¬ 𝑥 = 𝑦) → (𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑥, 1, 0)) ∈ {ℎ ∈ (ℕ0 ↑𝑚 𝐼) ∣ (◡ℎ “ ℕ) ∈ Fin})
22	2, 11, 12, 13, 14, 15, 18, 21	mvrval2 19243	. . . . . . . . 9 ⊢ ((𝜑 ∧ ((𝑥 ∈ 𝐼 ∧ 𝑦 ∈ 𝐼) ∧ (𝑉‘𝑥) = (𝑉‘𝑦)) ∧ ¬ 𝑥 = 𝑦) → ((𝑉‘𝑦)‘(𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑥, 1, 0))) = if((𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑥, 1, 0)) = (𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑦, 1, 0)), 1 , 0 ))
23	10, 17, 22	3eqtr3d 2652	. . . . . . . 8 ⊢ ((𝜑 ∧ ((𝑥 ∈ 𝐼 ∧ 𝑦 ∈ 𝐼) ∧ (𝑉‘𝑥) = (𝑉‘𝑦)) ∧ ¬ 𝑥 = 𝑦) → 1 = if((𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑥, 1, 0)) = (𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑦, 1, 0)), 1 , 0 ))
24		simp3 1056	. . . . . . . . . 10 ⊢ ((𝜑 ∧ ((𝑥 ∈ 𝐼 ∧ 𝑦 ∈ 𝐼) ∧ (𝑉‘𝑥) = (𝑉‘𝑦)) ∧ ¬ 𝑥 = 𝑦) → ¬ 𝑥 = 𝑦)
25		mpteqb 6207	. . . . . . . . . . . . . 14 ⊢ (∀𝑧 ∈ 𝐼 if(𝑧 = 𝑥, 1, 0) ∈ ℕ0 → ((𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑥, 1, 0)) = (𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑦, 1, 0)) ↔ ∀𝑧 ∈ 𝐼 if(𝑧 = 𝑥, 1, 0) = if(𝑧 = 𝑦, 1, 0)))
26		0nn0 11184	. . . . . . . . . . . . . . . 16 ⊢ 0 ∈ ℕ0
27	19, 26	keepel 4105	. . . . . . . . . . . . . . 15 ⊢ if(𝑧 = 𝑥, 1, 0) ∈ ℕ0
28	27	a1i 11	. . . . . . . . . . . . . 14 ⊢ (𝑧 ∈ 𝐼 → if(𝑧 = 𝑥, 1, 0) ∈ ℕ0)
29	25, 28	mprg 2910	. . . . . . . . . . . . 13 ⊢ ((𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑥, 1, 0)) = (𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑦, 1, 0)) ↔ ∀𝑧 ∈ 𝐼 if(𝑧 = 𝑥, 1, 0) = if(𝑧 = 𝑦, 1, 0))
30		iftrue 4042	. . . . . . . . . . . . . . 15 ⊢ (𝑧 = 𝑥 → if(𝑧 = 𝑥, 1, 0) = 1)
31		eqeq1 2614	. . . . . . . . . . . . . . . 16 ⊢ (𝑧 = 𝑥 → (𝑧 = 𝑦 ↔ 𝑥 = 𝑦))
32	31	ifbid 4058	. . . . . . . . . . . . . . 15 ⊢ (𝑧 = 𝑥 → if(𝑧 = 𝑦, 1, 0) = if(𝑥 = 𝑦, 1, 0))
33	30, 32	eqeq12d 2625	. . . . . . . . . . . . . 14 ⊢ (𝑧 = 𝑥 → (if(𝑧 = 𝑥, 1, 0) = if(𝑧 = 𝑦, 1, 0) ↔ 1 = if(𝑥 = 𝑦, 1, 0)))
34	33	rspcv 3278	. . . . . . . . . . . . 13 ⊢ (𝑥 ∈ 𝐼 → (∀𝑧 ∈ 𝐼 if(𝑧 = 𝑥, 1, 0) = if(𝑧 = 𝑦, 1, 0) → 1 = if(𝑥 = 𝑦, 1, 0)))
35	29, 34	syl5bi 231	. . . . . . . . . . . 12 ⊢ (𝑥 ∈ 𝐼 → ((𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑥, 1, 0)) = (𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑦, 1, 0)) → 1 = if(𝑥 = 𝑦, 1, 0)))
36	16, 35	syl 17	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ ((𝑥 ∈ 𝐼 ∧ 𝑦 ∈ 𝐼) ∧ (𝑉‘𝑥) = (𝑉‘𝑦)) ∧ ¬ 𝑥 = 𝑦) → ((𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑥, 1, 0)) = (𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑦, 1, 0)) → 1 = if(𝑥 = 𝑦, 1, 0)))
37		ax-1ne0 9884	. . . . . . . . . . . . 13 ⊢ 1 ≠ 0
38		eqeq1 2614	. . . . . . . . . . . . . 14 ⊢ (1 = if(𝑥 = 𝑦, 1, 0) → (1 = 0 ↔ if(𝑥 = 𝑦, 1, 0) = 0))
39	38	necon3abid 2818	. . . . . . . . . . . . 13 ⊢ (1 = if(𝑥 = 𝑦, 1, 0) → (1 ≠ 0 ↔ ¬ if(𝑥 = 𝑦, 1, 0) = 0))
40	37, 39	mpbii 222	. . . . . . . . . . . 12 ⊢ (1 = if(𝑥 = 𝑦, 1, 0) → ¬ if(𝑥 = 𝑦, 1, 0) = 0)
41		iffalse 4045	. . . . . . . . . . . 12 ⊢ (¬ 𝑥 = 𝑦 → if(𝑥 = 𝑦, 1, 0) = 0)
42	40, 41	nsyl2 141	. . . . . . . . . . 11 ⊢ (1 = if(𝑥 = 𝑦, 1, 0) → 𝑥 = 𝑦)
43	36, 42	syl6 34	. . . . . . . . . 10 ⊢ ((𝜑 ∧ ((𝑥 ∈ 𝐼 ∧ 𝑦 ∈ 𝐼) ∧ (𝑉‘𝑥) = (𝑉‘𝑦)) ∧ ¬ 𝑥 = 𝑦) → ((𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑥, 1, 0)) = (𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑦, 1, 0)) → 𝑥 = 𝑦))
44	24, 43	mtod 188	. . . . . . . . 9 ⊢ ((𝜑 ∧ ((𝑥 ∈ 𝐼 ∧ 𝑦 ∈ 𝐼) ∧ (𝑉‘𝑥) = (𝑉‘𝑦)) ∧ ¬ 𝑥 = 𝑦) → ¬ (𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑥, 1, 0)) = (𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑦, 1, 0)))
45		iffalse 4045	. . . . . . . . 9 ⊢ (¬ (𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑥, 1, 0)) = (𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑦, 1, 0)) → if((𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑥, 1, 0)) = (𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑦, 1, 0)), 1 , 0 ) = 0 )
46	44, 45	syl 17	. . . . . . . 8 ⊢ ((𝜑 ∧ ((𝑥 ∈ 𝐼 ∧ 𝑦 ∈ 𝐼) ∧ (𝑉‘𝑥) = (𝑉‘𝑦)) ∧ ¬ 𝑥 = 𝑦) → if((𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑥, 1, 0)) = (𝑧 ∈ 𝐼 ↦ if(𝑧 = 𝑦, 1, 0)), 1 , 0 ) = 0 )
47	23, 46	eqtrd 2644	. . . . . . 7 ⊢ ((𝜑 ∧ ((𝑥 ∈ 𝐼 ∧ 𝑦 ∈ 𝐼) ∧ (𝑉‘𝑥) = (𝑉‘𝑦)) ∧ ¬ 𝑥 = 𝑦) → 1 = 0 )
48	47	3expia 1259	. . . . . 6 ⊢ ((𝜑 ∧ ((𝑥 ∈ 𝐼 ∧ 𝑦 ∈ 𝐼) ∧ (𝑉‘𝑥) = (𝑉‘𝑦))) → (¬ 𝑥 = 𝑦 → 1 = 0 ))
49	48	necon1ad 2799	. . . . 5 ⊢ ((𝜑 ∧ ((𝑥 ∈ 𝐼 ∧ 𝑦 ∈ 𝐼) ∧ (𝑉‘𝑥) = (𝑉‘𝑦))) → ( 1 ≠ 0 → 𝑥 = 𝑦))
50	8, 49	mpd 15	. . . 4 ⊢ ((𝜑 ∧ ((𝑥 ∈ 𝐼 ∧ 𝑦 ∈ 𝐼) ∧ (𝑉‘𝑥) = (𝑉‘𝑦))) → 𝑥 = 𝑦)
51	50	expr 641	. . 3 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐼 ∧ 𝑦 ∈ 𝐼)) → ((𝑉‘𝑥) = (𝑉‘𝑦) → 𝑥 = 𝑦))
52	51	ralrimivva 2954	. 2 ⊢ (𝜑 → ∀𝑥 ∈ 𝐼 ∀𝑦 ∈ 𝐼 ((𝑉‘𝑥) = (𝑉‘𝑦) → 𝑥 = 𝑦))
53		dff13 6416	. 2 ⊢ (𝑉:𝐼–1-1→𝐵 ↔ (𝑉:𝐼⟶𝐵 ∧ ∀𝑥 ∈ 𝐼 ∀𝑦 ∈ 𝐼 ((𝑉‘𝑥) = (𝑉‘𝑦) → 𝑥 = 𝑦)))
54	6, 52, 53	sylanbrc 695	1 ⊢ (𝜑 → 𝑉:𝐼–1-1→𝐵)

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 195   ∧ wa 383   ∧ w3a 1031   = wceq 1475   ∈ wcel 1977   ≠ wne 2780  ∀wral 2896  {crab 2900  ifcif 4036   ↦ cmpt 4643  ^◡ccnv 5037   “ cima 5041  ⟶wf 5800  –1-1→wf1 5801  ‘cfv 5804  (class class class)co 6549   ↑_𝑚 cmap 7744  Fincfn 7841  0cc0 9815  1c1 9816  ℕcn 10897  ℕ₀cn0 11169  Basecbs 15695  0_gc0g 15923  1_rcur 18324  Ringcrg 18370   mPwSer cmps 19172   mVar cmvr 19173

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-rep 4699  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847  ax-cnex 9871  ax-resscn 9872  ax-1cn 9873  ax-icn 9874  ax-addcl 9875  ax-addrcl 9876  ax-mulcl 9877  ax-mulrcl 9878  ax-mulcom 9879  ax-addass 9880  ax-mulass 9881  ax-distr 9882  ax-i2m1 9883  ax-1ne0 9884  ax-1rid 9885  ax-rnegex 9886  ax-rrecex 9887  ax-cnre 9888  ax-pre-lttri 9889  ax-pre-lttrn 9890  ax-pre-ltadd 9891  ax-pre-mulgt0 9892

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3or 1032  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-nel 2783  df-ral 2901  df-rex 2902  df-reu 2903  df-rmo 2904  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-pss 3556  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-tp 4130  df-op 4132  df-uni 4373  df-int 4411  df-iun 4457  df-br 4584  df-opab 4644  df-mpt 4645  df-tr 4681  df-eprel 4949  df-id 4953  df-po 4959  df-so 4960  df-fr 4997  df-we 4999  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-pred 5597  df-ord 5643  df-on 5644  df-lim 5645  df-suc 5646  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-riota 6511  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-of 6795  df-om 6958  df-1st 7059  df-2nd 7060  df-supp 7183  df-wrecs 7294  df-recs 7355  df-rdg 7393  df-1o 7447  df-oadd 7451  df-er 7629  df-map 7746  df-en 7842  df-dom 7843  df-sdom 7844  df-fin 7845  df-fsupp 8159  df-pnf 9955  df-mnf 9956  df-xr 9957  df-ltxr 9958  df-le 9959  df-sub 10147  df-neg 10148  df-nn 10898  df-2 10956  df-3 10957  df-4 10958  df-5 10959  df-6 10960  df-7 10961  df-8 10962  df-9 10963  df-n0 11170  df-z 11255  df-uz 11564  df-fz 12198  df-struct 15697  df-ndx 15698  df-slot 15699  df-base 15700  df-sets 15701  df-plusg 15781  df-mulr 15782  df-sca 15784  df-vsca 15785  df-tset 15787  df-0g 15925  df-mgm 17065  df-sgrp 17107  df-mnd 17118  df-grp 17248  df-mgp 18313  df-ur 18325  df-ring 18372  df-psr 19177  df-mvr 19178

This theorem is referenced by: (None)