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Theorem sraring 14482
Description: Condition for a subring algebra to be a ring. (Contributed by Thierry Arnoux, 24-Jul-2023.)
Hypotheses
Ref Expression
sraring.1  |-  A  =  ( (subringAlg  `  R ) `
 V )
sraring.2  |-  B  =  ( Base `  R
)
Assertion
Ref Expression
sraring  |-  ( ( R  e.  Ring  /\  V  C_  B )  ->  A  e.  Ring )

Proof of Theorem sraring
Dummy variables  x  y are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 simpl 109 . 2  |-  ( ( R  e.  Ring  /\  V  C_  B )  ->  R  e.  Ring )
2 sraring.2 . . . 4  |-  B  =  ( Base `  R
)
32a1i 9 . . 3  |-  ( ( R  e.  Ring  /\  V  C_  B )  ->  B  =  ( Base `  R
) )
4 sraring.1 . . . . . 6  |-  A  =  ( (subringAlg  `  R ) `
 V )
54a1i 9 . . . . 5  |-  ( ( R  e.  Ring  /\  V  C_  B )  ->  A  =  ( (subringAlg  `  R
) `  V )
)
6 id 19 . . . . . . 7  |-  ( V 
C_  B  ->  V  C_  B )
76, 2sseqtrdi 3275 . . . . . 6  |-  ( V 
C_  B  ->  V  C_  ( Base `  R
) )
87adantl 277 . . . . 5  |-  ( ( R  e.  Ring  /\  V  C_  B )  ->  V  C_  ( Base `  R
) )
95, 8, 1srabaseg 14472 . . . 4  |-  ( ( R  e.  Ring  /\  V  C_  B )  ->  ( Base `  R )  =  ( Base `  A
) )
102, 9eqtrid 2276 . . 3  |-  ( ( R  e.  Ring  /\  V  C_  B )  ->  B  =  ( Base `  A
) )
115, 8, 1sraaddgg 14473 . . . 4  |-  ( ( R  e.  Ring  /\  V  C_  B )  ->  ( +g  `  R )  =  ( +g  `  A
) )
1211oveqdr 6046 . . 3  |-  ( ( ( R  e.  Ring  /\  V  C_  B )  /\  ( x  e.  B  /\  y  e.  B
) )  ->  (
x ( +g  `  R
) y )  =  ( x ( +g  `  A ) y ) )
135, 8, 1sramulrg 14474 . . . 4  |-  ( ( R  e.  Ring  /\  V  C_  B )  ->  ( .r `  R )  =  ( .r `  A
) )
1413oveqdr 6046 . . 3  |-  ( ( ( R  e.  Ring  /\  V  C_  B )  /\  ( x  e.  B  /\  y  e.  B
) )  ->  (
x ( .r `  R ) y )  =  ( x ( .r `  A ) y ) )
153, 10, 12, 14ringpropd 14070 . 2  |-  ( ( R  e.  Ring  /\  V  C_  B )  ->  ( R  e.  Ring  <->  A  e.  Ring ) )
161, 15mpbid 147 1  |-  ( ( R  e.  Ring  /\  V  C_  B )  ->  A  e.  Ring )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    = wceq 1397    e. wcel 2202    C_ wss 3200   ` cfv 5326   Basecbs 13100   +g cplusg 13178   .rcmulr 13179   Ringcrg 14028  subringAlg csra 14466
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 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-13 2204  ax-14 2205  ax-ext 2213  ax-coll 4204  ax-sep 4207  ax-pow 4264  ax-pr 4299  ax-un 4530  ax-setind 4635  ax-cnex 8123  ax-resscn 8124  ax-1cn 8125  ax-1re 8126  ax-icn 8127  ax-addcl 8128  ax-addrcl 8129  ax-mulcl 8130  ax-addcom 8132  ax-addass 8134  ax-i2m1 8137  ax-0lt1 8138  ax-0id 8140  ax-rnegex 8141  ax-pre-ltirr 8144  ax-pre-lttrn 8146  ax-pre-ltadd 8148
This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-fal 1403  df-nf 1509  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ne 2403  df-nel 2498  df-ral 2515  df-rex 2516  df-reu 2517  df-rab 2519  df-v 2804  df-sbc 3032  df-csb 3128  df-dif 3202  df-un 3204  df-in 3206  df-ss 3213  df-nul 3495  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-int 3929  df-iun 3972  df-br 4089  df-opab 4151  df-mpt 4152  df-id 4390  df-xp 4731  df-rel 4732  df-cnv 4733  df-co 4734  df-dm 4735  df-rn 4736  df-res 4737  df-ima 4738  df-iota 5286  df-fun 5328  df-fn 5329  df-f 5330  df-f1 5331  df-fo 5332  df-f1o 5333  df-fv 5334  df-riota 5971  df-ov 6021  df-oprab 6022  df-mpo 6023  df-pnf 8216  df-mnf 8217  df-ltxr 8219  df-inn 9144  df-2 9202  df-3 9203  df-4 9204  df-5 9205  df-6 9206  df-7 9207  df-8 9208  df-ndx 13103  df-slot 13104  df-base 13106  df-sets 13107  df-iress 13108  df-plusg 13191  df-mulr 13192  df-sca 13194  df-vsca 13195  df-ip 13196  df-0g 13359  df-mgm 13457  df-sgrp 13503  df-mnd 13518  df-grp 13604  df-mgp 13953  df-ring 14030  df-sra 14468
This theorem is referenced by: (None)
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