Theorem srgfcl 14117

Description: Functionality of the multiplication operation of a ring. (Contributed by Steve Rodriguez, 9-Sep-2007.) (Revised by AV, 24-Aug-2021.)

Hypotheses

Ref	Expression
srgfcl.b	⊢ 𝐵 = (Base‘𝑅)
srgfcl.t	⊢ · = (.r‘𝑅)

Assertion

Ref	Expression
srgfcl	⊢ ((𝑅 ∈ SRing ∧ · Fn (𝐵 × 𝐵)) → · :(𝐵 × 𝐵)⟶𝐵)

Proof of Theorem srgfcl

Dummy variables 𝑎 𝑏 𝑐 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		simpr 110	. 2 ⊢ ((𝑅 ∈ SRing ∧ · Fn (𝐵 × 𝐵)) → · Fn (𝐵 × 𝐵))
2		srgfcl.b	. . . . . . . 8 ⊢ 𝐵 = (Base‘𝑅)
3		srgfcl.t	. . . . . . . 8 ⊢ · = (.r‘𝑅)
4	2, 3	srgcl 14114	. . . . . . 7 ⊢ ((𝑅 ∈ SRing ∧ 𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵) → (𝑎 · 𝑏) ∈ 𝐵)
5	4	3expb 1231	. . . . . 6 ⊢ ((𝑅 ∈ SRing ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝐵)) → (𝑎 · 𝑏) ∈ 𝐵)
6	5	ralrimivva 2624	. . . . 5 ⊢ (𝑅 ∈ SRing → ∀𝑎 ∈ 𝐵 ∀𝑏 ∈ 𝐵 (𝑎 · 𝑏) ∈ 𝐵)
7		fveq2 5670	. . . . . . . 8 ⊢ (𝑐 = ⟨𝑎, 𝑏⟩ → ( · ‘𝑐) = ( · ‘⟨𝑎, 𝑏⟩))
8	7	eleq1d 2301	. . . . . . 7 ⊢ (𝑐 = ⟨𝑎, 𝑏⟩ → (( · ‘𝑐) ∈ 𝐵 ↔ ( · ‘⟨𝑎, 𝑏⟩) ∈ 𝐵))
9		df-ov 6053	. . . . . . . . 9 ⊢ (𝑎 · 𝑏) = ( · ‘⟨𝑎, 𝑏⟩)
10	9	eqcomi 2236	. . . . . . . 8 ⊢ ( · ‘⟨𝑎, 𝑏⟩) = (𝑎 · 𝑏)
11	10	eleq1i 2298	. . . . . . 7 ⊢ (( · ‘⟨𝑎, 𝑏⟩) ∈ 𝐵 ↔ (𝑎 · 𝑏) ∈ 𝐵)
12	8, 11	bitrdi 196	. . . . . 6 ⊢ (𝑐 = ⟨𝑎, 𝑏⟩ → (( · ‘𝑐) ∈ 𝐵 ↔ (𝑎 · 𝑏) ∈ 𝐵))
13	12	ralxp 4898	. . . . 5 ⊢ (∀𝑐 ∈ (𝐵 × 𝐵)( · ‘𝑐) ∈ 𝐵 ↔ ∀𝑎 ∈ 𝐵 ∀𝑏 ∈ 𝐵 (𝑎 · 𝑏) ∈ 𝐵)
14	6, 13	sylibr 134	. . . 4 ⊢ (𝑅 ∈ SRing → ∀𝑐 ∈ (𝐵 × 𝐵)( · ‘𝑐) ∈ 𝐵)
15	14	adantr 276	. . 3 ⊢ ((𝑅 ∈ SRing ∧ · Fn (𝐵 × 𝐵)) → ∀𝑐 ∈ (𝐵 × 𝐵)( · ‘𝑐) ∈ 𝐵)
16		fnfvrnss 5837	. . 3 ⊢ (( · Fn (𝐵 × 𝐵) ∧ ∀𝑐 ∈ (𝐵 × 𝐵)( · ‘𝑐) ∈ 𝐵) → ran · ⊆ 𝐵)
17	1, 15, 16	syl2anc 411	. 2 ⊢ ((𝑅 ∈ SRing ∧ · Fn (𝐵 × 𝐵)) → ran · ⊆ 𝐵)
18		df-f 5356	. 2 ⊢ ( · :(𝐵 × 𝐵)⟶𝐵 ↔ ( · Fn (𝐵 × 𝐵) ∧ ran · ⊆ 𝐵))
19	1, 17, 18	sylanbrc 417	1 ⊢ ((𝑅 ∈ SRing ∧ · Fn (𝐵 × 𝐵)) → · :(𝐵 × 𝐵)⟶𝐵)

Syntax hints:   → wi 4   ∧ wa 104   = wceq 1398   ∈ wcel 2203  ∀wral 2520   ⊆ wss 3211  ⟨cop 3692   × cxp 4747  ran crn 4750   Fn wfn 5347  ⟶wf 5348  ‘cfv 5352  (class class class)co 6050  Basecbs 13212  ._rcmulr 13291  SRingcsrg 14107

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 2205  ax-14 2206  ax-ext 2214  ax-sep 4228  ax-pow 4287  ax-pr 4322  ax-un 4554  ax-setind 4659  ax-cnex 8218  ax-resscn 8219  ax-1cn 8220  ax-1re 8221  ax-icn 8222  ax-addcl 8223  ax-addrcl 8224  ax-mulcl 8225  ax-addcom 8227  ax-addass 8229  ax-i2m1 8232  ax-0lt1 8233  ax-0id 8235  ax-rnegex 8236  ax-pre-ltirr 8239  ax-pre-ltadd 8243

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 2083  df-mo 2084  df-clab 2219  df-cleq 2225  df-clel 2228  df-nfc 2373  df-ne 2413  df-nel 2508  df-ral 2525  df-rex 2526  df-rab 2529  df-v 2815  df-sbc 3043  df-csb 3139  df-dif 3213  df-un 3215  df-in 3217  df-ss 3224  df-nul 3509  df-pw 3671  df-sn 3695  df-pr 3696  df-op 3698  df-uni 3915  df-int 3950  df-iun 3993  df-br 4110  df-opab 4172  df-mpt 4173  df-id 4414  df-xp 4755  df-rel 4756  df-cnv 4757  df-co 4758  df-dm 4759  df-rn 4760  df-res 4761  df-iota 5312  df-fun 5354  df-fn 5355  df-f 5356  df-fv 5360  df-riota 6003  df-ov 6053  df-oprab 6054  df-mpo 6055  df-pnf 8310  df-mnf 8311  df-ltxr 8313  df-inn 9238  df-2 9296  df-3 9297  df-ndx 13215  df-slot 13216  df-base 13218  df-sets 13219  df-plusg 13303  df-mulr 13304  df-0g 13471  df-mgm 13569  df-sgrp 13615  df-mnd 13630  df-mgp 14065  df-srg 14108

This theorem is referenced by: (None)