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Theorem tdrgtrg 21124
 Description: A topological division ring is a topological ring. (Contributed by Mario Carneiro, 5-Oct-2015.)
Assertion
Ref Expression
tdrgtrg TopDRing

Proof of Theorem tdrgtrg
StepHypRef Expression
1 eqid 2420 . . 3 mulGrp mulGrp
2 eqid 2420 . . 3 Unit Unit
31, 2istdrg 21117 . 2 TopDRing mulGrps Unit
43simp1bi 1020 1 TopDRing
 Colors of variables: wff setvar class Syntax hints:   wi 4   wcel 1867  cfv 5592  (class class class)co 6296   ↾s cress 15082  mulGrpcmgp 17664  Unitcui 17808  cdr 17916  ctgp 21023  ctrg 21107  TopDRingctdrg 21108 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1665  ax-4 1678  ax-5 1748  ax-6 1794  ax-7 1838  ax-10 1886  ax-11 1891  ax-12 1904  ax-13 2052  ax-ext 2398 This theorem depends on definitions:  df-bi 188  df-or 371  df-an 372  df-3an 984  df-tru 1440  df-ex 1660  df-nf 1664  df-sb 1787  df-clab 2406  df-cleq 2412  df-clel 2415  df-nfc 2570  df-rex 2779  df-rab 2782  df-v 3080  df-dif 3436  df-un 3438  df-in 3440  df-ss 3447  df-nul 3759  df-if 3907  df-sn 3994  df-pr 3996  df-op 4000  df-uni 4214  df-br 4418  df-iota 5556  df-fv 5600  df-ov 6299  df-tdrg 21112 This theorem is referenced by:  tdrgring  21126  tdrgtmd  21127  tdrgtps  21128  dvrcn  21135
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