Theorem lringnz 20520

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 20518	. 2 ⊢ (𝑅 ∈ LRing → 𝑅 ∈ NzRing)
2		lringnz.1	. . 3 ⊢ 1 = (1r‘𝑅)
3		lringnz.2	. . 3 ⊢ 0 = (0g‘𝑅)
4	2, 3	nzrnz 20492	. 2 ⊢ (𝑅 ∈ NzRing → 1 ≠ 0 )
5	1, 4	syl 17	1 ⊢ (𝑅 ∈ LRing → 1 ≠ 0 )

Syntax hints:   → wi 4   = wceq 1542   ∈ wcel 2114   ≠ wne 2932  ‘cfv 6498  0_gc0g 17402  1_rcur 20162  NzRingcnzr 20489  LRingclring 20515

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-ext 2708

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-sb 2069  df-clab 2715  df-cleq 2728  df-clel 2811  df-ne 2933  df-rab 3390  df-v 3431  df-dif 3892  df-un 3894  df-ss 3906  df-nul 4274  df-if 4467  df-sn 4568  df-pr 4570  df-op 4574  df-uni 4851  df-br 5086  df-iota 6454  df-fv 6506  df-nzr 20490  df-lring 20516

This theorem is referenced by: (None)