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Theorem ringassNEW 17145
Description: Associative law for the multiplication operation of a ring.
Hypotheses
Ref Expression
ringcl.1NEW |- B = (base` R)
ringcl.3NEW |- T = (.r` R)
Assertion
Ref Expression
ringassNEW |- ((R e. RingNEW /\ (X e. B /\ Y e. B /\ Z e. B)) -> ((XTY)TZ) = (XT(YTZ)))

Proof of Theorem ringassNEW
StepHypRef Expression
1 ringcl.1NEW . . 3 |- B = (base` R)
2 eqid 1884 . . 3 |- (+g` R) = (+g` R)
3 ringcl.3NEW . . 3 |- T = (.r` R)
41, 2, 3ringiNEW 17143 . 2 |- ((R e. RingNEW /\ (X e. B /\ Y e. B /\ Z e. B)) -> ((XTY) e. B /\ (((XTY)TZ) = (XT(YTZ)) /\ (XT(Y(+g` R)Z)) = ((XTY)(+g` R)(XTZ)) /\ ((X(+g` R)Y)TZ) = ((XTZ)(+g` R)(YTZ)))))
5 simpr1 882 . 2 |- (((XTY) e. B /\ (((XTY)TZ) = (XT(YTZ)) /\ (XT(Y(+g` R)Z)) = ((XTY)(+g` R)(XTZ)) /\ ((X(+g` R)Y)TZ) = ((XTZ)(+g` R)(YTZ)))) -> ((XTY)TZ) = (XT(YTZ)))
64, 5syl 12 1 |- ((R e. RingNEW /\ (X e. B /\ Y e. B /\ Z e. B)) -> ((XTY)TZ) = (XT(YTZ)))
Colors of variables: wff set class
Syntax hints:   -> wi 3   /\ wa 240   /\ w3a 858   = wceq 1298   e. wcel 1300  ` cfv 3998  (class class class)co 4884  basecbs 16758  +gcplusg 17080  .rcmulr 17085  RingNEWcrg 17086
This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7  ax-7 1304  ax-gen 1305  ax-8 1306  ax-9 1307  ax-10 1308  ax-11 1309  ax-12 1310  ax-13 1311  ax-14 1312  ax-17 1317  ax-4 1319  ax-5o 1321  ax-6o 1324  ax-9o 1481  ax-10o 1500  ax-16 1580  ax-11o 1588  ax-ext 1865  ax-rep 3428  ax-sep 3438  ax-nul 3445  ax-pow 3481  ax-pr 3524  ax-un 3790
This theorem depends on definitions:  df-bi 164  df-or 241  df-an 242  df-3an 860  df-tru 1262  df-ex 1327  df-sb 1536  df-eu 1775  df-mo 1776  df-clab 1872  df-cleq 1877  df-clel 1880  df-ne 2019  df-ral 2109  df-rex 2110  df-v 2294  df-dif 2597  df-un 2600  df-in 2603  df-ss 2605  df-nul 2876  df-pw 3035  df-sn 3049  df-pr 3050  df-op 3053  df-uni 3178  df-br 3339  df-opab 3396  df-id 3586  df-xp 4000  df-rel 4001  df-cnv 4002  df-co 4003  df-dm 4004  df-rn 4005  df-res 4006  df-ima 4007  df-fun 4008  df-fn 4009  df-fv 4014  df-opr 4886  df-struct 16708  df-ringNEW 17094
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