Theorem uc1pldg 23712

Description: Unitic polynomials have unit leading coefficients. (Contributed by Stefan O'Rear, 28-Mar-2015.)

Hypotheses

Ref	Expression
uc1pldg.d	⊢ 𝐷 = ( deg1 ‘𝑅)
uc1pldg.u	⊢ 𝑈 = (Unit‘𝑅)
uc1pldg.c	⊢ 𝐶 = (Unic1p‘𝑅)

Assertion

Ref	Expression
uc1pldg	⊢ (𝐹 ∈ 𝐶 → ((coe1‘𝐹)‘(𝐷‘𝐹)) ∈ 𝑈)

Proof of Theorem uc1pldg

Step	Hyp	Ref	Expression
1		eqid 2610	. . 3 ⊢ (Poly1‘𝑅) = (Poly1‘𝑅)
2		eqid 2610	. . 3 ⊢ (Base‘(Poly1‘𝑅)) = (Base‘(Poly1‘𝑅))
3		eqid 2610	. . 3 ⊢ (0g‘(Poly1‘𝑅)) = (0g‘(Poly1‘𝑅))
4		uc1pldg.d	. . 3 ⊢ 𝐷 = ( deg1 ‘𝑅)
5		uc1pldg.c	. . 3 ⊢ 𝐶 = (Unic1p‘𝑅)
6		uc1pldg.u	. . 3 ⊢ 𝑈 = (Unit‘𝑅)
7	1, 2, 3, 4, 5, 6	isuc1p 23704	. 2 ⊢ (𝐹 ∈ 𝐶 ↔ (𝐹 ∈ (Base‘(Poly1‘𝑅)) ∧ 𝐹 ≠ (0g‘(Poly1‘𝑅)) ∧ ((coe1‘𝐹)‘(𝐷‘𝐹)) ∈ 𝑈))
8	7	simp3bi 1071	1 ⊢ (𝐹 ∈ 𝐶 → ((coe1‘𝐹)‘(𝐷‘𝐹)) ∈ 𝑈)

Syntax hints:   → wi 4   = wceq 1475   ∈ wcel 1977   ≠ wne 2780  ‘cfv 5804  Basecbs 15695  0_gc0g 15923  Unitcui 18462  Poly₁cpl1 19368  coe₁cco1 19369   deg₁ cdg1 23618  Unic_1pcuc1p 23690

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-ral 2901  df-rex 2902  df-rab 2905  df-v 3175  df-sbc 3403  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-nul 3875  df-if 4037  df-sn 4126  df-pr 4128  df-op 4132  df-uni 4373  df-br 4584  df-opab 4644  df-mpt 4645  df-id 4953  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-iota 5768  df-fun 5806  df-fv 5812  df-slot 15699  df-base 15700  df-uc1p 23695

This theorem is referenced by:  uc1pmon1p  23715  q1peqb  23718  fta1glem1  23729  ig1peu  23735