Theorem nrhmzr 45319

Description: There is no ring homomorphism from the zero ring into a nonzero ring. (Contributed by AV, 18-Apr-2020.)

Assertion

Ref	Expression
nrhmzr	⊢ ((𝑍 ∈ (Ring ∖ NzRing) ∧ 𝑅 ∈ NzRing) → (𝑍 RingHom 𝑅) = ∅)

Proof of Theorem nrhmzr

Dummy variable 𝑓 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		eqid 2738	. . . . . . . . . 10 ⊢ (Base‘𝑍) = (Base‘𝑍)
2		eqid 2738	. . . . . . . . . 10 ⊢ (0g‘𝑍) = (0g‘𝑍)
3		eqid 2738	. . . . . . . . . 10 ⊢ (1r‘𝑍) = (1r‘𝑍)
4	1, 2, 3	0ring1eq0 45318	. . . . . . . . 9 ⊢ (𝑍 ∈ (Ring ∖ NzRing) → (1r‘𝑍) = (0g‘𝑍))
5	4	adantr 480	. . . . . . . 8 ⊢ ((𝑍 ∈ (Ring ∖ NzRing) ∧ 𝑅 ∈ NzRing) → (1r‘𝑍) = (0g‘𝑍))
6	5	adantr 480	. . . . . . 7 ⊢ (((𝑍 ∈ (Ring ∖ NzRing) ∧ 𝑅 ∈ NzRing) ∧ 𝑓 ∈ (𝑍 RingHom 𝑅)) → (1r‘𝑍) = (0g‘𝑍))
7	6	eqcomd 2744	. . . . . 6 ⊢ (((𝑍 ∈ (Ring ∖ NzRing) ∧ 𝑅 ∈ NzRing) ∧ 𝑓 ∈ (𝑍 RingHom 𝑅)) → (0g‘𝑍) = (1r‘𝑍))
8	7	fveq2d 6760	. . . . 5 ⊢ (((𝑍 ∈ (Ring ∖ NzRing) ∧ 𝑅 ∈ NzRing) ∧ 𝑓 ∈ (𝑍 RingHom 𝑅)) → (𝑓‘(0g‘𝑍)) = (𝑓‘(1r‘𝑍)))
9		eqid 2738	. . . . . . 7 ⊢ (1r‘𝑅) = (1r‘𝑅)
10	3, 9	rhm1 19889	. . . . . 6 ⊢ (𝑓 ∈ (𝑍 RingHom 𝑅) → (𝑓‘(1r‘𝑍)) = (1r‘𝑅))
11	10	adantl 481	. . . . 5 ⊢ (((𝑍 ∈ (Ring ∖ NzRing) ∧ 𝑅 ∈ NzRing) ∧ 𝑓 ∈ (𝑍 RingHom 𝑅)) → (𝑓‘(1r‘𝑍)) = (1r‘𝑅))
12	8, 11	eqtrd 2778	. . . 4 ⊢ (((𝑍 ∈ (Ring ∖ NzRing) ∧ 𝑅 ∈ NzRing) ∧ 𝑓 ∈ (𝑍 RingHom 𝑅)) → (𝑓‘(0g‘𝑍)) = (1r‘𝑅))
13		rhmghm 19884	. . . . . 6 ⊢ (𝑓 ∈ (𝑍 RingHom 𝑅) → 𝑓 ∈ (𝑍 GrpHom 𝑅))
14	13	adantl 481	. . . . 5 ⊢ (((𝑍 ∈ (Ring ∖ NzRing) ∧ 𝑅 ∈ NzRing) ∧ 𝑓 ∈ (𝑍 RingHom 𝑅)) → 𝑓 ∈ (𝑍 GrpHom 𝑅))
15		eqid 2738	. . . . . 6 ⊢ (0g‘𝑅) = (0g‘𝑅)
16	2, 15	ghmid 18755	. . . . 5 ⊢ (𝑓 ∈ (𝑍 GrpHom 𝑅) → (𝑓‘(0g‘𝑍)) = (0g‘𝑅))
17	14, 16	syl 17	. . . 4 ⊢ (((𝑍 ∈ (Ring ∖ NzRing) ∧ 𝑅 ∈ NzRing) ∧ 𝑓 ∈ (𝑍 RingHom 𝑅)) → (𝑓‘(0g‘𝑍)) = (0g‘𝑅))
18	12, 17	jca 511	. . 3 ⊢ (((𝑍 ∈ (Ring ∖ NzRing) ∧ 𝑅 ∈ NzRing) ∧ 𝑓 ∈ (𝑍 RingHom 𝑅)) → ((𝑓‘(0g‘𝑍)) = (1r‘𝑅) ∧ (𝑓‘(0g‘𝑍)) = (0g‘𝑅)))
19	18	ralrimiva 3107	. 2 ⊢ ((𝑍 ∈ (Ring ∖ NzRing) ∧ 𝑅 ∈ NzRing) → ∀𝑓 ∈ (𝑍 RingHom 𝑅)((𝑓‘(0g‘𝑍)) = (1r‘𝑅) ∧ (𝑓‘(0g‘𝑍)) = (0g‘𝑅)))
20	9, 15	nzrnz 20444	. . . . . . . . . . . . 13 ⊢ (𝑅 ∈ NzRing → (1r‘𝑅) ≠ (0g‘𝑅))
21	20	necomd 2998	. . . . . . . . . . . 12 ⊢ (𝑅 ∈ NzRing → (0g‘𝑅) ≠ (1r‘𝑅))
22	21	adantl 481	. . . . . . . . . . 11 ⊢ ((𝑍 ∈ (Ring ∖ NzRing) ∧ 𝑅 ∈ NzRing) → (0g‘𝑅) ≠ (1r‘𝑅))
23	22	adantr 480	. . . . . . . . . 10 ⊢ (((𝑍 ∈ (Ring ∖ NzRing) ∧ 𝑅 ∈ NzRing) ∧ (𝑓‘(0g‘𝑍)) = (0g‘𝑅)) → (0g‘𝑅) ≠ (1r‘𝑅))
24		neeq1 3005	. . . . . . . . . . 11 ⊢ ((𝑓‘(0g‘𝑍)) = (0g‘𝑅) → ((𝑓‘(0g‘𝑍)) ≠ (1r‘𝑅) ↔ (0g‘𝑅) ≠ (1r‘𝑅)))
25	24	adantl 481	. . . . . . . . . 10 ⊢ (((𝑍 ∈ (Ring ∖ NzRing) ∧ 𝑅 ∈ NzRing) ∧ (𝑓‘(0g‘𝑍)) = (0g‘𝑅)) → ((𝑓‘(0g‘𝑍)) ≠ (1r‘𝑅) ↔ (0g‘𝑅) ≠ (1r‘𝑅)))
26	23, 25	mpbird 256	. . . . . . . . 9 ⊢ (((𝑍 ∈ (Ring ∖ NzRing) ∧ 𝑅 ∈ NzRing) ∧ (𝑓‘(0g‘𝑍)) = (0g‘𝑅)) → (𝑓‘(0g‘𝑍)) ≠ (1r‘𝑅))
27	26	orcd 869	. . . . . . . 8 ⊢ (((𝑍 ∈ (Ring ∖ NzRing) ∧ 𝑅 ∈ NzRing) ∧ (𝑓‘(0g‘𝑍)) = (0g‘𝑅)) → ((𝑓‘(0g‘𝑍)) ≠ (1r‘𝑅) ∨ (𝑓‘(0g‘𝑍)) ≠ (0g‘𝑅)))
28	27	expcom 413	. . . . . . 7 ⊢ ((𝑓‘(0g‘𝑍)) = (0g‘𝑅) → ((𝑍 ∈ (Ring ∖ NzRing) ∧ 𝑅 ∈ NzRing) → ((𝑓‘(0g‘𝑍)) ≠ (1r‘𝑅) ∨ (𝑓‘(0g‘𝑍)) ≠ (0g‘𝑅))))
29		olc 864	. . . . . . . 8 ⊢ ((𝑓‘(0g‘𝑍)) ≠ (0g‘𝑅) → ((𝑓‘(0g‘𝑍)) ≠ (1r‘𝑅) ∨ (𝑓‘(0g‘𝑍)) ≠ (0g‘𝑅)))
30	29	a1d 25	. . . . . . 7 ⊢ ((𝑓‘(0g‘𝑍)) ≠ (0g‘𝑅) → ((𝑍 ∈ (Ring ∖ NzRing) ∧ 𝑅 ∈ NzRing) → ((𝑓‘(0g‘𝑍)) ≠ (1r‘𝑅) ∨ (𝑓‘(0g‘𝑍)) ≠ (0g‘𝑅))))
31	28, 30	pm2.61ine 3027	. . . . . 6 ⊢ ((𝑍 ∈ (Ring ∖ NzRing) ∧ 𝑅 ∈ NzRing) → ((𝑓‘(0g‘𝑍)) ≠ (1r‘𝑅) ∨ (𝑓‘(0g‘𝑍)) ≠ (0g‘𝑅)))
32		neorian 3038	. . . . . 6 ⊢ (((𝑓‘(0g‘𝑍)) ≠ (1r‘𝑅) ∨ (𝑓‘(0g‘𝑍)) ≠ (0g‘𝑅)) ↔ ¬ ((𝑓‘(0g‘𝑍)) = (1r‘𝑅) ∧ (𝑓‘(0g‘𝑍)) = (0g‘𝑅)))
33	31, 32	sylib 217	. . . . 5 ⊢ ((𝑍 ∈ (Ring ∖ NzRing) ∧ 𝑅 ∈ NzRing) → ¬ ((𝑓‘(0g‘𝑍)) = (1r‘𝑅) ∧ (𝑓‘(0g‘𝑍)) = (0g‘𝑅)))
34		con3 153	. . . . 5 ⊢ ((𝑓 ∈ (𝑍 RingHom 𝑅) → ((𝑓‘(0g‘𝑍)) = (1r‘𝑅) ∧ (𝑓‘(0g‘𝑍)) = (0g‘𝑅))) → (¬ ((𝑓‘(0g‘𝑍)) = (1r‘𝑅) ∧ (𝑓‘(0g‘𝑍)) = (0g‘𝑅)) → ¬ 𝑓 ∈ (𝑍 RingHom 𝑅)))
35	33, 34	syl5com 31	. . . 4 ⊢ ((𝑍 ∈ (Ring ∖ NzRing) ∧ 𝑅 ∈ NzRing) → ((𝑓 ∈ (𝑍 RingHom 𝑅) → ((𝑓‘(0g‘𝑍)) = (1r‘𝑅) ∧ (𝑓‘(0g‘𝑍)) = (0g‘𝑅))) → ¬ 𝑓 ∈ (𝑍 RingHom 𝑅)))
36	35	alimdv 1920	. . 3 ⊢ ((𝑍 ∈ (Ring ∖ NzRing) ∧ 𝑅 ∈ NzRing) → (∀𝑓(𝑓 ∈ (𝑍 RingHom 𝑅) → ((𝑓‘(0g‘𝑍)) = (1r‘𝑅) ∧ (𝑓‘(0g‘𝑍)) = (0g‘𝑅))) → ∀𝑓 ¬ 𝑓 ∈ (𝑍 RingHom 𝑅)))
37		df-ral 3068	. . 3 ⊢ (∀𝑓 ∈ (𝑍 RingHom 𝑅)((𝑓‘(0g‘𝑍)) = (1r‘𝑅) ∧ (𝑓‘(0g‘𝑍)) = (0g‘𝑅)) ↔ ∀𝑓(𝑓 ∈ (𝑍 RingHom 𝑅) → ((𝑓‘(0g‘𝑍)) = (1r‘𝑅) ∧ (𝑓‘(0g‘𝑍)) = (0g‘𝑅))))
38		eq0 4274	. . 3 ⊢ ((𝑍 RingHom 𝑅) = ∅ ↔ ∀𝑓 ¬ 𝑓 ∈ (𝑍 RingHom 𝑅))
39	36, 37, 38	3imtr4g 295	. 2 ⊢ ((𝑍 ∈ (Ring ∖ NzRing) ∧ 𝑅 ∈ NzRing) → (∀𝑓 ∈ (𝑍 RingHom 𝑅)((𝑓‘(0g‘𝑍)) = (1r‘𝑅) ∧ (𝑓‘(0g‘𝑍)) = (0g‘𝑅)) → (𝑍 RingHom 𝑅) = ∅))
40	19, 39	mpd 15	1 ⊢ ((𝑍 ∈ (Ring ∖ NzRing) ∧ 𝑅 ∈ NzRing) → (𝑍 RingHom 𝑅) = ∅)

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 205   ∧ wa 395   ∨ wo 843  ∀wal 1537   = wceq 1539   ∈ wcel 2108   ≠ wne 2942  ∀wral 3063   ∖ cdif 3880  ∅c0 4253  ‘cfv 6418  (class class class)co 7255  Basecbs 16840  0_gc0g 17067   GrpHom cghm 18746  1_rcur 19652  Ringcrg 19698   RingHom crh 19871  NzRingcnzr 20441

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2110  ax-9 2118  ax-10 2139  ax-11 2156  ax-12 2173  ax-ext 2709  ax-rep 5205  ax-sep 5218  ax-nul 5225  ax-pow 5283  ax-pr 5347  ax-un 7566  ax-cnex 10858  ax-resscn 10859  ax-1cn 10860  ax-icn 10861  ax-addcl 10862  ax-addrcl 10863  ax-mulcl 10864  ax-mulrcl 10865  ax-mulcom 10866  ax-addass 10867  ax-mulass 10868  ax-distr 10869  ax-i2m1 10870  ax-1ne0 10871  ax-1rid 10872  ax-rnegex 10873  ax-rrecex 10874  ax-cnre 10875  ax-pre-lttri 10876  ax-pre-lttrn 10877  ax-pre-ltadd 10878  ax-pre-mulgt0 10879

This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3or 1086  df-3an 1087  df-tru 1542  df-fal 1552  df-ex 1784  df-nf 1788  df-sb 2069  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2817  df-nfc 2888  df-ne 2943  df-nel 3049  df-ral 3068  df-rex 3069  df-reu 3070  df-rmo 3071  df-rab 3072  df-v 3424  df-sbc 3712  df-csb 3829  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-pss 3902  df-nul 4254  df-if 4457  df-pw 4532  df-sn 4559  df-pr 4561  df-tp 4563  df-op 4565  df-uni 4837  df-int 4877  df-iun 4923  df-br 5071  df-opab 5133  df-mpt 5154  df-tr 5188  df-id 5480  df-eprel 5486  df-po 5494  df-so 5495  df-fr 5535  df-we 5537  df-xp 5586  df-rel 5587  df-cnv 5588  df-co 5589  df-dm 5590  df-rn 5591  df-res 5592  df-ima 5593  df-pred 6191  df-ord 6254  df-on 6255  df-lim 6256  df-suc 6257  df-iota 6376  df-fun 6420  df-fn 6421  df-f 6422  df-f1 6423  df-fo 6424  df-f1o 6425  df-fv 6426  df-riota 7212  df-ov 7258  df-oprab 7259  df-mpo 7260  df-om 7688  df-1st 7804  df-2nd 7805  df-frecs 8068  df-wrecs 8099  df-recs 8173  df-rdg 8212  df-1o 8267  df-oadd 8271  df-er 8456  df-map 8575  df-en 8692  df-dom 8693  df-sdom 8694  df-fin 8695  df-dju 9590  df-card 9628  df-pnf 10942  df-mnf 10943  df-xr 10944  df-ltxr 10945  df-le 10946  df-sub 11137  df-neg 11138  df-nn 11904  df-2 11966  df-n0 12164  df-xnn0 12236  df-z 12250  df-uz 12512  df-fz 13169  df-hash 13973  df-sets 16793  df-slot 16811  df-ndx 16823  df-base 16841  df-plusg 16901  df-0g 17069  df-mgm 18241  df-sgrp 18290  df-mnd 18301  df-mhm 18345  df-grp 18495  df-minusg 18496  df-ghm 18747  df-mgp 19636  df-ur 19653  df-ring 19700  df-rnghom 19874  df-nzr 20442

This theorem is referenced by:  zrninitoringc  45517  nzerooringczr  45518