Theorem rnrhmsubrg 14420

Description: The range of a ring homomorphism is a subring. (Contributed by SN, 18-Nov-2023.)

Assertion

Ref	Expression
rnrhmsubrg	⊢ (𝐹 ∈ (𝑀 RingHom 𝑁) → ran 𝐹 ∈ (SubRing‘𝑁))

Proof of Theorem rnrhmsubrg

Step	Hyp	Ref	Expression
1		df-ima 4764	. . 3 ⊢ (𝐹 “ (Base‘𝑀)) = ran (𝐹 ↾ (Base‘𝑀))
2		eqid 2234	. . . . . . 7 ⊢ (Base‘𝑀) = (Base‘𝑀)
3		eqid 2234	. . . . . . 7 ⊢ (Base‘𝑁) = (Base‘𝑁)
4	2, 3	rhmf 14330	. . . . . 6 ⊢ (𝐹 ∈ (𝑀 RingHom 𝑁) → 𝐹:(Base‘𝑀)⟶(Base‘𝑁))
5	4	ffnd 5511	. . . . 5 ⊢ (𝐹 ∈ (𝑀 RingHom 𝑁) → 𝐹 Fn (Base‘𝑀))
6		fnresdm 5469	. . . . 5 ⊢ (𝐹 Fn (Base‘𝑀) → (𝐹 ↾ (Base‘𝑀)) = 𝐹)
7	5, 6	syl 14	. . . 4 ⊢ (𝐹 ∈ (𝑀 RingHom 𝑁) → (𝐹 ↾ (Base‘𝑀)) = 𝐹)
8	7	rneqd 4988	. . 3 ⊢ (𝐹 ∈ (𝑀 RingHom 𝑁) → ran (𝐹 ↾ (Base‘𝑀)) = ran 𝐹)
9	1, 8	eqtr2id 2280	. 2 ⊢ (𝐹 ∈ (𝑀 RingHom 𝑁) → ran 𝐹 = (𝐹 “ (Base‘𝑀)))
10		rhmrcl1 14322	. . . 4 ⊢ (𝐹 ∈ (𝑀 RingHom 𝑁) → 𝑀 ∈ Ring)
11	2	subrgid 14391	. . . 4 ⊢ (𝑀 ∈ Ring → (Base‘𝑀) ∈ (SubRing‘𝑀))
12	10, 11	syl 14	. . 3 ⊢ (𝐹 ∈ (𝑀 RingHom 𝑁) → (Base‘𝑀) ∈ (SubRing‘𝑀))
13		rhmima 14419	. . 3 ⊢ ((𝐹 ∈ (𝑀 RingHom 𝑁) ∧ (Base‘𝑀) ∈ (SubRing‘𝑀)) → (𝐹 “ (Base‘𝑀)) ∈ (SubRing‘𝑁))
14	12, 13	mpdan 421	. 2 ⊢ (𝐹 ∈ (𝑀 RingHom 𝑁) → (𝐹 “ (Base‘𝑀)) ∈ (SubRing‘𝑁))
15	9, 14	eqeltrd 2311	1 ⊢ (𝐹 ∈ (𝑀 RingHom 𝑁) → ran 𝐹 ∈ (SubRing‘𝑁))

Syntax hints:   → wi 4   = wceq 1398   ∈ wcel 2205  ran crn 4752   ↾ cres 4753   “ cima 4754   Fn wfn 5349  ‘cfv 5354  (class class class)co 6052  Basecbs 13233  Ringcrg 14161   RingHom crh 14317  SubRingcsubrg 14385

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2207  ax-14 2208  ax-ext 2216  ax-coll 4227  ax-sep 4230  ax-pow 4289  ax-pr 4324  ax-un 4556  ax-setind 4661  ax-cnex 8223  ax-resscn 8224  ax-1cn 8225  ax-1re 8226  ax-icn 8227  ax-addcl 8228  ax-addrcl 8229  ax-mulcl 8230  ax-addcom 8232  ax-addass 8234  ax-i2m1 8237  ax-0lt1 8238  ax-0id 8240  ax-rnegex 8241  ax-pre-ltirr 8244  ax-pre-lttrn 8246  ax-pre-ltadd 8248

This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ne 2415  df-nel 2510  df-ral 2527  df-rex 2528  df-reu 2529  df-rmo 2530  df-rab 2531  df-v 2817  df-sbc 3045  df-csb 3141  df-dif 3215  df-un 3217  df-in 3219  df-ss 3226  df-nul 3511  df-pw 3673  df-sn 3697  df-pr 3698  df-op 3700  df-uni 3917  df-int 3952  df-iun 3995  df-br 4112  df-opab 4174  df-mpt 4175  df-id 4416  df-xp 4757  df-rel 4758  df-cnv 4759  df-co 4760  df-dm 4761  df-rn 4762  df-res 4763  df-ima 4764  df-iota 5314  df-fun 5356  df-fn 5357  df-f 5358  df-f1 5359  df-fo 5360  df-f1o 5361  df-fv 5362  df-riota 6005  df-ov 6055  df-oprab 6056  df-mpo 6057  df-1st 6336  df-2nd 6337  df-map 6886  df-pnf 8315  df-mnf 8316  df-ltxr 8318  df-inn 9243  df-2 9301  df-3 9302  df-ndx 13236  df-slot 13237  df-base 13239  df-sets 13240  df-iress 13241  df-plusg 13324  df-mulr 13325  df-0g 13492  df-mgm 13590  df-sgrp 13636  df-mnd 13651  df-mhm 13693  df-submnd 13694  df-grp 13737  df-minusg 13738  df-subg 13908  df-ghm 13979  df-mgp 14086  df-ur 14125  df-ring 14163  df-rhm 14319  df-subrg 14387

This theorem is referenced by: (None)