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Theorem nzrnz 14573
Description: One and zero are different in a nonzero ring. (Contributed by Stefan O'Rear, 24-Feb-2015.)
Hypotheses
Ref Expression
isnzr.o 1 = (1r‘𝑅)
isnzr.z 0 = (0g‘𝑅)
Assertion
Ref Expression
nzrnz (𝑅 ∈ NzRing → 1 ≠ 0 )

Proof of Theorem nzrnz
StepHypRef Expression
1 isnzr.o . . 3 1 = (1r‘𝑅)
2 isnzr.z . . 3 0 = (0g‘𝑅)
31, 2isnzr 14572 . 2 (𝑅 ∈ NzRing ↔ (𝑅 ∈ Ring ∧ 1 ≠ 0 ))
43simprbi 275 1 (𝑅 ∈ NzRing → 1 ≠ 0 )
Colors of variables:    wff set class
This proof depends on syntax axioms:   → wi 4   = wceq 1402   ∈ wcel 2209   ≠ wne 2420  ‘cfv 5377  0gc0g 13663  1rcur 14346  Ringcrg 14384  NzRingcnzr 14570
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 623  ax-in2 624  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-ext 2220
This proof depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ne 2421  df-rex 2534  df-rab 2537  df-v 2823  df-un 3224  df-sn 3715  df-pr 3716  df-op 3718  df-uni 3936  df-br 4131  df-iota 5337  df-fv 5385  df-nzr 14571
This theorem is used by:  nzrunit  14579  lringnz  14586  subrgnzr  14634  rrgnz  14661  drngunz  14702
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