Theorem uc1pldg 24749

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 2798	. . 3 ⊢ (Poly1‘𝑅) = (Poly1‘𝑅)
2		eqid 2798	. . 3 ⊢ (Base‘(Poly1‘𝑅)) = (Base‘(Poly1‘𝑅))
3		eqid 2798	. . 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 24741	. 2 ⊢ (𝐹 ∈ 𝐶 ↔ (𝐹 ∈ (Base‘(Poly1‘𝑅)) ∧ 𝐹 ≠ (0g‘(Poly1‘𝑅)) ∧ ((coe1‘𝐹)‘(𝐷‘𝐹)) ∈ 𝑈))
8	7	simp3bi 1144	1 ⊢ (𝐹 ∈ 𝐶 → ((coe1‘𝐹)‘(𝐷‘𝐹)) ∈ 𝑈)

Syntax hints:   → wi 4   = wceq 1538   ∈ wcel 2111   ≠ wne 2987  ‘cfv 6324  Basecbs 16475  0_gc0g 16705  Unitcui 19385  Poly₁cpl1 20806  coe₁cco1 20807   deg₁ cdg1 24655  Unic_1pcuc1p 24727

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 1911  ax-6 1970  ax-7 2015  ax-8 2113  ax-9 2121  ax-10 2142  ax-11 2158  ax-12 2175  ax-ext 2770  ax-sep 5167  ax-nul 5174  ax-pow 5231  ax-pr 5295

This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3an 1086  df-tru 1541  df-ex 1782  df-nf 1786  df-sb 2070  df-mo 2598  df-eu 2629  df-clab 2777  df-cleq 2791  df-clel 2870  df-nfc 2938  df-ne 2988  df-ral 3111  df-rex 3112  df-rab 3115  df-v 3443  df-sbc 3721  df-dif 3884  df-un 3886  df-in 3888  df-ss 3898  df-nul 4244  df-if 4426  df-sn 4526  df-pr 4528  df-op 4532  df-uni 4801  df-br 5031  df-opab 5093  df-mpt 5111  df-id 5425  df-xp 5525  df-rel 5526  df-cnv 5527  df-co 5528  df-dm 5529  df-iota 6283  df-fun 6326  df-fv 6332  df-slot 16479  df-base 16481  df-uc1p 24732

This theorem is referenced by:  uc1pmon1p  24752  q1peqb  24755  fta1glem1  24766  ig1peu  24772