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Theorem ringcsect 44443
Description: A section in the category of unital rings, written out. (Contributed by AV, 14-Feb-2020.)
Hypotheses
Ref Expression
ringcsect.c 𝐶 = (RingCat‘𝑈)
ringcsect.b 𝐵 = (Base‘𝐶)
ringcsect.u (𝜑𝑈𝑉)
ringcsect.x (𝜑𝑋𝐵)
ringcsect.y (𝜑𝑌𝐵)
ringcsect.e 𝐸 = (Base‘𝑋)
ringcsect.n 𝑆 = (Sect‘𝐶)
Assertion
Ref Expression
ringcsect (𝜑 → (𝐹(𝑋𝑆𝑌)𝐺 ↔ (𝐹 ∈ (𝑋 RingHom 𝑌) ∧ 𝐺 ∈ (𝑌 RingHom 𝑋) ∧ (𝐺𝐹) = ( I ↾ 𝐸))))

Proof of Theorem ringcsect
StepHypRef Expression
1 ringcsect.b . . 3 𝐵 = (Base‘𝐶)
2 eqid 2820 . . 3 (Hom ‘𝐶) = (Hom ‘𝐶)
3 eqid 2820 . . 3 (comp‘𝐶) = (comp‘𝐶)
4 eqid 2820 . . 3 (Id‘𝐶) = (Id‘𝐶)
5 ringcsect.n . . 3 𝑆 = (Sect‘𝐶)
6 ringcsect.u . . . 4 (𝜑𝑈𝑉)
7 ringcsect.c . . . . 5 𝐶 = (RingCat‘𝑈)
87ringccat 44436 . . . 4 (𝑈𝑉𝐶 ∈ Cat)
96, 8syl 17 . . 3 (𝜑𝐶 ∈ Cat)
10 ringcsect.x . . 3 (𝜑𝑋𝐵)
11 ringcsect.y . . 3 (𝜑𝑌𝐵)
121, 2, 3, 4, 5, 9, 10, 11issect 16998 . 2 (𝜑 → (𝐹(𝑋𝑆𝑌)𝐺 ↔ (𝐹 ∈ (𝑋(Hom ‘𝐶)𝑌) ∧ 𝐺 ∈ (𝑌(Hom ‘𝐶)𝑋) ∧ (𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑋)𝐹) = ((Id‘𝐶)‘𝑋))))
137, 1, 6, 2, 10, 11ringchom 44425 . . . . . . 7 (𝜑 → (𝑋(Hom ‘𝐶)𝑌) = (𝑋 RingHom 𝑌))
1413eleq2d 2896 . . . . . 6 (𝜑 → (𝐹 ∈ (𝑋(Hom ‘𝐶)𝑌) ↔ 𝐹 ∈ (𝑋 RingHom 𝑌)))
157, 1, 6, 2, 11, 10ringchom 44425 . . . . . . 7 (𝜑 → (𝑌(Hom ‘𝐶)𝑋) = (𝑌 RingHom 𝑋))
1615eleq2d 2896 . . . . . 6 (𝜑 → (𝐺 ∈ (𝑌(Hom ‘𝐶)𝑋) ↔ 𝐺 ∈ (𝑌 RingHom 𝑋)))
1714, 16anbi12d 632 . . . . 5 (𝜑 → ((𝐹 ∈ (𝑋(Hom ‘𝐶)𝑌) ∧ 𝐺 ∈ (𝑌(Hom ‘𝐶)𝑋)) ↔ (𝐹 ∈ (𝑋 RingHom 𝑌) ∧ 𝐺 ∈ (𝑌 RingHom 𝑋))))
1817anbi1d 631 . . . 4 (𝜑 → (((𝐹 ∈ (𝑋(Hom ‘𝐶)𝑌) ∧ 𝐺 ∈ (𝑌(Hom ‘𝐶)𝑋)) ∧ (𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑋)𝐹) = ((Id‘𝐶)‘𝑋)) ↔ ((𝐹 ∈ (𝑋 RingHom 𝑌) ∧ 𝐺 ∈ (𝑌 RingHom 𝑋)) ∧ (𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑋)𝐹) = ((Id‘𝐶)‘𝑋))))
196adantr 483 . . . . . . 7 ((𝜑 ∧ (𝐹 ∈ (𝑋 RingHom 𝑌) ∧ 𝐺 ∈ (𝑌 RingHom 𝑋))) → 𝑈𝑉)
2010adantr 483 . . . . . . . 8 ((𝜑 ∧ (𝐹 ∈ (𝑋 RingHom 𝑌) ∧ 𝐺 ∈ (𝑌 RingHom 𝑋))) → 𝑋𝐵)
217, 1, 6ringcbas 44423 . . . . . . . . . . 11 (𝜑𝐵 = (𝑈 ∩ Ring))
2221eleq2d 2896 . . . . . . . . . 10 (𝜑 → (𝑋𝐵𝑋 ∈ (𝑈 ∩ Ring)))
23 inss1 4179 . . . . . . . . . . . 12 (𝑈 ∩ Ring) ⊆ 𝑈
2423a1i 11 . . . . . . . . . . 11 (𝜑 → (𝑈 ∩ Ring) ⊆ 𝑈)
2524sseld 3941 . . . . . . . . . 10 (𝜑 → (𝑋 ∈ (𝑈 ∩ Ring) → 𝑋𝑈))
2622, 25sylbid 242 . . . . . . . . 9 (𝜑 → (𝑋𝐵𝑋𝑈))
2726adantr 483 . . . . . . . 8 ((𝜑 ∧ (𝐹 ∈ (𝑋 RingHom 𝑌) ∧ 𝐺 ∈ (𝑌 RingHom 𝑋))) → (𝑋𝐵𝑋𝑈))
2820, 27mpd 15 . . . . . . 7 ((𝜑 ∧ (𝐹 ∈ (𝑋 RingHom 𝑌) ∧ 𝐺 ∈ (𝑌 RingHom 𝑋))) → 𝑋𝑈)
2911adantr 483 . . . . . . . 8 ((𝜑 ∧ (𝐹 ∈ (𝑋 RingHom 𝑌) ∧ 𝐺 ∈ (𝑌 RingHom 𝑋))) → 𝑌𝐵)
3021eleq2d 2896 . . . . . . . . . 10 (𝜑 → (𝑌𝐵𝑌 ∈ (𝑈 ∩ Ring)))
3124sseld 3941 . . . . . . . . . 10 (𝜑 → (𝑌 ∈ (𝑈 ∩ Ring) → 𝑌𝑈))
3230, 31sylbid 242 . . . . . . . . 9 (𝜑 → (𝑌𝐵𝑌𝑈))
3332adantr 483 . . . . . . . 8 ((𝜑 ∧ (𝐹 ∈ (𝑋 RingHom 𝑌) ∧ 𝐺 ∈ (𝑌 RingHom 𝑋))) → (𝑌𝐵𝑌𝑈))
3429, 33mpd 15 . . . . . . 7 ((𝜑 ∧ (𝐹 ∈ (𝑋 RingHom 𝑌) ∧ 𝐺 ∈ (𝑌 RingHom 𝑋))) → 𝑌𝑈)
35 eqid 2820 . . . . . . . . . 10 (Base‘𝑋) = (Base‘𝑋)
36 eqid 2820 . . . . . . . . . 10 (Base‘𝑌) = (Base‘𝑌)
3735, 36rhmf 19453 . . . . . . . . 9 (𝐹 ∈ (𝑋 RingHom 𝑌) → 𝐹:(Base‘𝑋)⟶(Base‘𝑌))
3837adantr 483 . . . . . . . 8 ((𝐹 ∈ (𝑋 RingHom 𝑌) ∧ 𝐺 ∈ (𝑌 RingHom 𝑋)) → 𝐹:(Base‘𝑋)⟶(Base‘𝑌))
3938adantl 484 . . . . . . 7 ((𝜑 ∧ (𝐹 ∈ (𝑋 RingHom 𝑌) ∧ 𝐺 ∈ (𝑌 RingHom 𝑋))) → 𝐹:(Base‘𝑋)⟶(Base‘𝑌))
4036, 35rhmf 19453 . . . . . . . . 9 (𝐺 ∈ (𝑌 RingHom 𝑋) → 𝐺:(Base‘𝑌)⟶(Base‘𝑋))
4140adantl 484 . . . . . . . 8 ((𝐹 ∈ (𝑋 RingHom 𝑌) ∧ 𝐺 ∈ (𝑌 RingHom 𝑋)) → 𝐺:(Base‘𝑌)⟶(Base‘𝑋))
4241adantl 484 . . . . . . 7 ((𝜑 ∧ (𝐹 ∈ (𝑋 RingHom 𝑌) ∧ 𝐺 ∈ (𝑌 RingHom 𝑋))) → 𝐺:(Base‘𝑌)⟶(Base‘𝑋))
437, 19, 3, 28, 34, 28, 39, 42ringcco 44429 . . . . . 6 ((𝜑 ∧ (𝐹 ∈ (𝑋 RingHom 𝑌) ∧ 𝐺 ∈ (𝑌 RingHom 𝑋))) → (𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑋)𝐹) = (𝐺𝐹))
44 ringcsect.e . . . . . . . 8 𝐸 = (Base‘𝑋)
457, 1, 4, 6, 10, 44ringcid 44437 . . . . . . 7 (𝜑 → ((Id‘𝐶)‘𝑋) = ( I ↾ 𝐸))
4645adantr 483 . . . . . 6 ((𝜑 ∧ (𝐹 ∈ (𝑋 RingHom 𝑌) ∧ 𝐺 ∈ (𝑌 RingHom 𝑋))) → ((Id‘𝐶)‘𝑋) = ( I ↾ 𝐸))
4743, 46eqeq12d 2836 . . . . 5 ((𝜑 ∧ (𝐹 ∈ (𝑋 RingHom 𝑌) ∧ 𝐺 ∈ (𝑌 RingHom 𝑋))) → ((𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑋)𝐹) = ((Id‘𝐶)‘𝑋) ↔ (𝐺𝐹) = ( I ↾ 𝐸)))
4847pm5.32da 581 . . . 4 (𝜑 → (((𝐹 ∈ (𝑋 RingHom 𝑌) ∧ 𝐺 ∈ (𝑌 RingHom 𝑋)) ∧ (𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑋)𝐹) = ((Id‘𝐶)‘𝑋)) ↔ ((𝐹 ∈ (𝑋 RingHom 𝑌) ∧ 𝐺 ∈ (𝑌 RingHom 𝑋)) ∧ (𝐺𝐹) = ( I ↾ 𝐸))))
4918, 48bitrd 281 . . 3 (𝜑 → (((𝐹 ∈ (𝑋(Hom ‘𝐶)𝑌) ∧ 𝐺 ∈ (𝑌(Hom ‘𝐶)𝑋)) ∧ (𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑋)𝐹) = ((Id‘𝐶)‘𝑋)) ↔ ((𝐹 ∈ (𝑋 RingHom 𝑌) ∧ 𝐺 ∈ (𝑌 RingHom 𝑋)) ∧ (𝐺𝐹) = ( I ↾ 𝐸))))
50 df-3an 1085 . . 3 ((𝐹 ∈ (𝑋(Hom ‘𝐶)𝑌) ∧ 𝐺 ∈ (𝑌(Hom ‘𝐶)𝑋) ∧ (𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑋)𝐹) = ((Id‘𝐶)‘𝑋)) ↔ ((𝐹 ∈ (𝑋(Hom ‘𝐶)𝑌) ∧ 𝐺 ∈ (𝑌(Hom ‘𝐶)𝑋)) ∧ (𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑋)𝐹) = ((Id‘𝐶)‘𝑋)))
51 df-3an 1085 . . 3 ((𝐹 ∈ (𝑋 RingHom 𝑌) ∧ 𝐺 ∈ (𝑌 RingHom 𝑋) ∧ (𝐺𝐹) = ( I ↾ 𝐸)) ↔ ((𝐹 ∈ (𝑋 RingHom 𝑌) ∧ 𝐺 ∈ (𝑌 RingHom 𝑋)) ∧ (𝐺𝐹) = ( I ↾ 𝐸)))
5249, 50, 513bitr4g 316 . 2 (𝜑 → ((𝐹 ∈ (𝑋(Hom ‘𝐶)𝑌) ∧ 𝐺 ∈ (𝑌(Hom ‘𝐶)𝑋) ∧ (𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑋)𝐹) = ((Id‘𝐶)‘𝑋)) ↔ (𝐹 ∈ (𝑋 RingHom 𝑌) ∧ 𝐺 ∈ (𝑌 RingHom 𝑋) ∧ (𝐺𝐹) = ( I ↾ 𝐸))))
5312, 52bitrd 281 1 (𝜑 → (𝐹(𝑋𝑆𝑌)𝐺 ↔ (𝐹 ∈ (𝑋 RingHom 𝑌) ∧ 𝐺 ∈ (𝑌 RingHom 𝑋) ∧ (𝐺𝐹) = ( I ↾ 𝐸))))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 208  wa 398  w3a 1083   = wceq 1537  wcel 2114  cin 3908  wss 3909  cop 4545   class class class wbr 5038   I cid 5431  cres 5529  ccom 5531  wf 6323  cfv 6327  (class class class)co 7129  Basecbs 16458  Hom chom 16551  compcco 16552  Catccat 16910  Idccid 16911  Sectcsect 16989  Ringcrg 19272   RingHom crh 19439  RingCatcringc 44415
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2792  ax-rep 5162  ax-sep 5175  ax-nul 5182  ax-pow 5238  ax-pr 5302  ax-un 7435  ax-cnex 10567  ax-resscn 10568  ax-1cn 10569  ax-icn 10570  ax-addcl 10571  ax-addrcl 10572  ax-mulcl 10573  ax-mulrcl 10574  ax-mulcom 10575  ax-addass 10576  ax-mulass 10577  ax-distr 10578  ax-i2m1 10579  ax-1ne0 10580  ax-1rid 10581  ax-rnegex 10582  ax-rrecex 10583  ax-cnre 10584  ax-pre-lttri 10585  ax-pre-lttrn 10586  ax-pre-ltadd 10587  ax-pre-mulgt0 10588
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1084  df-3an 1085  df-tru 1540  df-fal 1550  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2653  df-clab 2799  df-cleq 2813  df-clel 2891  df-nfc 2959  df-ne 3007  df-nel 3111  df-ral 3130  df-rex 3131  df-reu 3132  df-rmo 3133  df-rab 3134  df-v 3472  df-sbc 3749  df-csb 3857  df-dif 3912  df-un 3914  df-in 3916  df-ss 3926  df-pss 3928  df-nul 4266  df-if 4440  df-pw 4513  df-sn 4540  df-pr 4542  df-tp 4544  df-op 4546  df-uni 4811  df-int 4849  df-iun 4893  df-br 5039  df-opab 5101  df-mpt 5119  df-tr 5145  df-id 5432  df-eprel 5437  df-po 5446  df-so 5447  df-fr 5486  df-we 5488  df-xp 5533  df-rel 5534  df-cnv 5535  df-co 5536  df-dm 5537  df-rn 5538  df-res 5539  df-ima 5540  df-pred 6120  df-ord 6166  df-on 6167  df-lim 6168  df-suc 6169  df-iota 6286  df-fun 6329  df-fn 6330  df-f 6331  df-f1 6332  df-fo 6333  df-f1o 6334  df-fv 6335  df-riota 7087  df-ov 7132  df-oprab 7133  df-mpo 7134  df-om 7555  df-1st 7663  df-2nd 7664  df-wrecs 7921  df-recs 7982  df-rdg 8020  df-1o 8076  df-oadd 8080  df-er 8263  df-map 8382  df-pm 8383  df-ixp 8436  df-en 8484  df-dom 8485  df-sdom 8486  df-fin 8487  df-pnf 10651  df-mnf 10652  df-xr 10653  df-ltxr 10654  df-le 10655  df-sub 10846  df-neg 10847  df-nn 11613  df-2 11675  df-3 11676  df-4 11677  df-5 11678  df-6 11679  df-7 11680  df-8 11681  df-9 11682  df-n0 11873  df-z 11957  df-dec 12074  df-uz 12219  df-fz 12873  df-struct 16460  df-ndx 16461  df-slot 16462  df-base 16464  df-sets 16465  df-ress 16466  df-plusg 16553  df-hom 16564  df-cco 16565  df-0g 16690  df-cat 16914  df-cid 16915  df-homf 16916  df-sect 16992  df-ssc 17055  df-resc 17056  df-subc 17057  df-estrc 17348  df-mgm 17827  df-sgrp 17876  df-mnd 17887  df-mhm 17931  df-grp 18081  df-ghm 18331  df-mgp 19215  df-ur 19227  df-ring 19274  df-rnghom 19442  df-ringc 44417
This theorem is referenced by:  ringcinv  44444
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