Theorem lringnz 20628

Description: A local ring is a nonzero ring. (Contributed by Jim Kingdon, 20-Feb-2025.) (Revised by SN, 23-Feb-2025.)

Hypotheses

Ref	Expression
lringnz.1	⊢ 1 = (1r‘𝑅)
lringnz.2	⊢ 0 = (0g‘𝑅)

Assertion

Ref	Expression
lringnz	⊢ (𝑅 ∈ LRing → 1 ≠ 0 )

Proof of Theorem lringnz

Step	Hyp	Ref	Expression
1		lringnzr 20626	. 2 ⊢ (𝑅 ∈ LRing → 𝑅 ∈ NzRing)
2		lringnz.1	. . 3 ⊢ 1 = (1r‘𝑅)
3		lringnz.2	. . 3 ⊢ 0 = (0g‘𝑅)
4	2, 3	nzrnz 20598	. 2 ⊢ (𝑅 ∈ NzRing → 1 ≠ 0 )
5	1, 4	syl 18	1 ⊢ (𝑅 ∈ LRing → 1 ≠ 0 )

Syntax hints:   → wi 4   = wceq 1567   ∈ wcel 2149   ≠ wne 2964  ‘cfv 6537  0_gc0g 17492  1_rcur 20263  NzRingcnzr 20595  LRingclring 20623

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1822  ax-4 1836  ax-5 1937  ax-6 1994  ax-7 2035  ax-8 2151  ax-9 2159  ax-ext 2741

This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1103  df-tru 1570  df-fal 1580  df-ex 1807  df-sb 2098  df-clab 2748  df-cleq 2761  df-clel 2844  df-ne 2965  df-rab 3424  df-v 3465  df-dif 3916  df-un 3918  df-ss 3930  df-nul 4295  df-if 4493  df-sn 4595  df-pr 4597  df-op 4601  df-uni 4877  df-br 5114  df-iota 6493  df-fv 6545  df-nzr 20596  df-lring 20624

This theorem is referenced by: (None)