l3lab/ntp-mathlib huggingface dataset:
theorem cyclotomic_eval_lt_add_one_pow_totient {n : ℕ} {q : ℝ} (hn' : 3 ≤ n) (hq' : 1 < q) :
    (cyclotomic n ℝ).eval q < (q + 1) ^ totient n := by
  have hn : 0 < n := pos_of_gt hn'
  have hq := zero_lt_one.trans hq'
  have hfor : ∀ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ ≤ q + 1 := by
    intro ζ' hζ'
    rw [mem_primitiveRoots hn] at hζ'
    convert norm_sub_le (↑q) ζ'
    · rw [Complex.norm_real, Real.norm_of_nonneg (zero_le_one.trans_lt hq').le]
    · rw [hζ'.norm'_eq_one hn.ne']
  let ζ := Complex.exp (2 * ↑Real.pi * Complex.I / ↑n)
  have hζ : IsPrimitiveRoot ζ n := Complex.isPrimitiveRoot_exp n hn.ne'
  have hex : ∃ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ < q + 1 := by
    refine' ⟨ζ, (mem_primitiveRoots hn).mpr hζ, _⟩
    suffices ¬SameRay ℝ (q : ℂ) (-ζ) by
      convert norm_add_lt_of_not_sameRay this using 2
      · rw [Complex.norm_eq_abs, Complex.abs_ofReal]
        symm
        exact abs_eq_self.mpr hq.le
      · simp [abs_of_pos hq, hζ.norm'_eq_one hn.ne', -Complex.norm_eq_abs]
    rw [Complex.sameRay_iff]
    push_neg
    refine' ⟨mod_cast hq.ne', neg_ne_zero.mpr <| hζ.ne_zero hn.ne', _⟩
    rw [Complex.arg_ofReal_of_nonneg hq.le, Ne.def, eq_comm]
    intro h
    rw [Complex.arg_eq_zero_iff, Complex.neg_re, neg_nonneg, Complex.neg_im, neg_eq_zero] at h
    have hζ₀ : ζ ≠ 0 := by
      clear_value ζ
      rintro rfl
      exact hn.ne' (hζ.unique IsPrimitiveRoot.zero)
    have : ζ.re < 0 ∧ ζ.im = 0 := ⟨h.1.lt_of_ne ?_, h.2⟩
    rw [← Complex.arg_eq_pi_iff, hζ.arg_eq_pi_iff hn.ne'] at this
    rw [this] at hζ
    linarith [hζ.unique <| IsPrimitiveRoot.neg_one 0 two_ne_zero.symm]
    · contrapose! hζ₀
      apply Complex.ext <;> simp [hζ₀, h.2]
  have : ¬eval (↑q) (cyclotomic n ℂ) = 0 := by
    erw [cyclotomic.eval_apply q n (algebraMap ℝ ℂ)]
    simp only [Complex.coe_algebraMap, Complex.ofReal_eq_zero]
    exact (cyclotomic_pos' n hq').ne.symm
  suffices Units.mk0 ‖(cyclotomic n ℂ).eval ↑q‖₊ (by simp [this]) <
      Units.mk0 (Real.toNNReal (q + 1)) (by simp; linarith) ^ totient n by
    

Proof state:
n : ℕ
q : ℝ
hn' : 3 ≤ n
hq' : 1 < q
hn : 0 < n
hq : 0 < q
hfor : ∀ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ ≤ q + 1
ζ : ℂ := Complex.exp (2 * ↑Real.pi * Complex.I / ↑n)
hζ : IsPrimitiveRoot ζ n
hex : ∃ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ < q + 1
this✝ : ¬eval (↑q) (cyclotomic n ℂ) = 0
this :
  Units.mk0 ‖eval (↑q) (cyclotomic n ℂ)‖₊ (_ : ¬‖eval (↑q) (cyclotomic n ℂ)‖₊ = 0) <
    Units.mk0 (Real.toNNReal (q + 1)) (_ : Real.toNNReal (q + 1) ≠ 0) ^ φ n
⊢ eval q (cyclotomic n ℝ) < (q + 1) ^ φ n

Next tactic:
simp only [← Units.val_lt_val, Units.val_pow_eq_pow_val, Units.val_mk0, ← NNReal.coe_lt_coe,
      hq'.le, Real.toNNReal_lt_toNNReal_iff_of_nonneg, coe_nnnorm, Complex.norm_eq_abs,
      NNReal.coe_pow, Real.coe_toNNReal', max_eq_left, sub_nonneg] at this
theorem cyclotomic_eval_lt_add_one_pow_totient {n : ℕ} {q : ℝ} (hn' : 3 ≤ n) (hq' : 1 < q) :
    (cyclotomic n ℝ).eval q < (q + 1) ^ totient n := by
  have hn : 0 < n := pos_of_gt hn'
  have hq := zero_lt_one.trans hq'
  have hfor : ∀ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ ≤ q + 1 := by
    intro ζ' hζ'
    rw [mem_primitiveRoots hn] at hζ'
    convert norm_sub_le (↑q) ζ'
    · rw [Complex.norm_real, Real.norm_of_nonneg (zero_le_one.trans_lt hq').le]
    · rw [hζ'.norm'_eq_one hn.ne']
  let ζ := Complex.exp (2 * ↑Real.pi * Complex.I / ↑n)
  have hζ : IsPrimitiveRoot ζ n := Complex.isPrimitiveRoot_exp n hn.ne'
  have hex : ∃ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ < q + 1 := by
    refine' ⟨ζ, (mem_primitiveRoots hn).mpr hζ, _⟩
    suffices ¬SameRay ℝ (q : ℂ) (-ζ) by
      convert norm_add_lt_of_not_sameRay this using 2
      · rw [Complex.norm_eq_abs, Complex.abs_ofReal]
        symm
        exact abs_eq_self.mpr hq.le
      · simp [abs_of_pos hq, hζ.norm'_eq_one hn.ne', -Complex.norm_eq_abs]
    rw [Complex.sameRay_iff]
    push_neg
    refine' ⟨mod_cast hq.ne', neg_ne_zero.mpr <| hζ.ne_zero hn.ne', _⟩
    rw [Complex.arg_ofReal_of_nonneg hq.le, Ne.def, eq_comm]
    intro h
    rw [Complex.arg_eq_zero_iff, Complex.neg_re, neg_nonneg, Complex.neg_im, neg_eq_zero] at h
    have hζ₀ : ζ ≠ 0 := by
      clear_value ζ
      rintro rfl
      exact hn.ne' (hζ.unique IsPrimitiveRoot.zero)
    have : ζ.re < 0 ∧ ζ.im = 0 := ⟨h.1.lt_of_ne ?_, h.2⟩
    rw [← Complex.arg_eq_pi_iff, hζ.arg_eq_pi_iff hn.ne'] at this
    rw [this] at hζ
    linarith [hζ.unique <| IsPrimitiveRoot.neg_one 0 two_ne_zero.symm]
    · contrapose! hζ₀
      apply Complex.ext <;> simp [hζ₀, h.2]
  have : ¬eval (↑q) (cyclotomic n ℂ) = 0 := by
    erw [cyclotomic.eval_apply q n (algebraMap ℝ ℂ)]
    simp only [Complex.coe_algebraMap, Complex.ofReal_eq_zero]
    exact (cyclotomic_pos' n hq').ne.symm
  suffices Units.mk0 ‖(cyclotomic n ℂ).eval ↑q‖₊ (by simp [this]) <
      Units.mk0 (Real.toNNReal (q + 1)) (by simp; linarith) ^ totient n by
    simp only [← Units.val_lt_val, Units.val_pow_eq_pow_val, Units.val_mk0, ← NNReal.coe_lt_coe,
      hq'.le, Real.toNNReal_lt_toNNReal_iff_of_nonneg, coe_nnnorm, Complex.norm_eq_abs,
      NNReal.coe_pow, Real.coe_toNNReal', max_eq_left, sub_nonneg] at this
    

Proof state:
n : ℕ
q : ℝ
hn' : 3 ≤ n
hq' : 1 < q
hn : 0 < n
hq : 0 < q
hfor : ∀ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ ≤ q + 1
ζ : ℂ := Complex.exp (2 * ↑Real.pi * Complex.I / ↑n)
hζ : IsPrimitiveRoot ζ n
hex : ∃ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ < q + 1
this✝ : ¬eval (↑q) (cyclotomic n ℂ) = 0
this : Complex.abs (eval (↑q) (cyclotomic n ℂ)) < max (q + 1) 0 ^ φ n
⊢ eval q (cyclotomic n ℝ) < (q + 1) ^ φ n

Next tactic:
convert this using 2
theorem cyclotomic_eval_lt_add_one_pow_totient {n : ℕ} {q : ℝ} (hn' : 3 ≤ n) (hq' : 1 < q) :
    (cyclotomic n ℝ).eval q < (q + 1) ^ totient n := by
  have hn : 0 < n := pos_of_gt hn'
  have hq := zero_lt_one.trans hq'
  have hfor : ∀ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ ≤ q + 1 := by
    intro ζ' hζ'
    rw [mem_primitiveRoots hn] at hζ'
    convert norm_sub_le (↑q) ζ'
    · rw [Complex.norm_real, Real.norm_of_nonneg (zero_le_one.trans_lt hq').le]
    · rw [hζ'.norm'_eq_one hn.ne']
  let ζ := Complex.exp (2 * ↑Real.pi * Complex.I / ↑n)
  have hζ : IsPrimitiveRoot ζ n := Complex.isPrimitiveRoot_exp n hn.ne'
  have hex : ∃ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ < q + 1 := by
    refine' ⟨ζ, (mem_primitiveRoots hn).mpr hζ, _⟩
    suffices ¬SameRay ℝ (q : ℂ) (-ζ) by
      convert norm_add_lt_of_not_sameRay this using 2
      · rw [Complex.norm_eq_abs, Complex.abs_ofReal]
        symm
        exact abs_eq_self.mpr hq.le
      · simp [abs_of_pos hq, hζ.norm'_eq_one hn.ne', -Complex.norm_eq_abs]
    rw [Complex.sameRay_iff]
    push_neg
    refine' ⟨mod_cast hq.ne', neg_ne_zero.mpr <| hζ.ne_zero hn.ne', _⟩
    rw [Complex.arg_ofReal_of_nonneg hq.le, Ne.def, eq_comm]
    intro h
    rw [Complex.arg_eq_zero_iff, Complex.neg_re, neg_nonneg, Complex.neg_im, neg_eq_zero] at h
    have hζ₀ : ζ ≠ 0 := by
      clear_value ζ
      rintro rfl
      exact hn.ne' (hζ.unique IsPrimitiveRoot.zero)
    have : ζ.re < 0 ∧ ζ.im = 0 := ⟨h.1.lt_of_ne ?_, h.2⟩
    rw [← Complex.arg_eq_pi_iff, hζ.arg_eq_pi_iff hn.ne'] at this
    rw [this] at hζ
    linarith [hζ.unique <| IsPrimitiveRoot.neg_one 0 two_ne_zero.symm]
    · contrapose! hζ₀
      apply Complex.ext <;> simp [hζ₀, h.2]
  have : ¬eval (↑q) (cyclotomic n ℂ) = 0 := by
    erw [cyclotomic.eval_apply q n (algebraMap ℝ ℂ)]
    simp only [Complex.coe_algebraMap, Complex.ofReal_eq_zero]
    exact (cyclotomic_pos' n hq').ne.symm
  suffices Units.mk0 ‖(cyclotomic n ℂ).eval ↑q‖₊ (by simp [this]) <
      Units.mk0 (Real.toNNReal (q + 1)) (by simp; linarith) ^ totient n by
    simp only [← Units.val_lt_val, Units.val_pow_eq_pow_val, Units.val_mk0, ← NNReal.coe_lt_coe,
      hq'.le, Real.toNNReal_lt_toNNReal_iff_of_nonneg, coe_nnnorm, Complex.norm_eq_abs,
      NNReal.coe_pow, Real.coe_toNNReal', max_eq_left, sub_nonneg] at this
    convert this using 2
    · 

Proof state:
case h.e'_3
n : ℕ
q : ℝ
hn' : 3 ≤ n
hq' : 1 < q
hn : 0 < n
hq : 0 < q
hfor : ∀ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ ≤ q + 1
ζ : ℂ := Complex.exp (2 * ↑Real.pi * Complex.I / ↑n)
hζ : IsPrimitiveRoot ζ n
hex : ∃ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ < q + 1
this✝ : ¬eval (↑q) (cyclotomic n ℂ) = 0
this : Complex.abs (eval (↑q) (cyclotomic n ℂ)) < max (q + 1) 0 ^ φ n
⊢ eval q (cyclotomic n ℝ) = Complex.abs (eval (↑q) (cyclotomic n ℂ))

Next tactic:
erw [cyclotomic.eval_apply q n (algebraMap ℝ ℂ), eq_comm]
theorem cyclotomic_eval_lt_add_one_pow_totient {n : ℕ} {q : ℝ} (hn' : 3 ≤ n) (hq' : 1 < q) :
    (cyclotomic n ℝ).eval q < (q + 1) ^ totient n := by
  have hn : 0 < n := pos_of_gt hn'
  have hq := zero_lt_one.trans hq'
  have hfor : ∀ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ ≤ q + 1 := by
    intro ζ' hζ'
    rw [mem_primitiveRoots hn] at hζ'
    convert norm_sub_le (↑q) ζ'
    · rw [Complex.norm_real, Real.norm_of_nonneg (zero_le_one.trans_lt hq').le]
    · rw [hζ'.norm'_eq_one hn.ne']
  let ζ := Complex.exp (2 * ↑Real.pi * Complex.I / ↑n)
  have hζ : IsPrimitiveRoot ζ n := Complex.isPrimitiveRoot_exp n hn.ne'
  have hex : ∃ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ < q + 1 := by
    refine' ⟨ζ, (mem_primitiveRoots hn).mpr hζ, _⟩
    suffices ¬SameRay ℝ (q : ℂ) (-ζ) by
      convert norm_add_lt_of_not_sameRay this using 2
      · rw [Complex.norm_eq_abs, Complex.abs_ofReal]
        symm
        exact abs_eq_self.mpr hq.le
      · simp [abs_of_pos hq, hζ.norm'_eq_one hn.ne', -Complex.norm_eq_abs]
    rw [Complex.sameRay_iff]
    push_neg
    refine' ⟨mod_cast hq.ne', neg_ne_zero.mpr <| hζ.ne_zero hn.ne', _⟩
    rw [Complex.arg_ofReal_of_nonneg hq.le, Ne.def, eq_comm]
    intro h
    rw [Complex.arg_eq_zero_iff, Complex.neg_re, neg_nonneg, Complex.neg_im, neg_eq_zero] at h
    have hζ₀ : ζ ≠ 0 := by
      clear_value ζ
      rintro rfl
      exact hn.ne' (hζ.unique IsPrimitiveRoot.zero)
    have : ζ.re < 0 ∧ ζ.im = 0 := ⟨h.1.lt_of_ne ?_, h.2⟩
    rw [← Complex.arg_eq_pi_iff, hζ.arg_eq_pi_iff hn.ne'] at this
    rw [this] at hζ
    linarith [hζ.unique <| IsPrimitiveRoot.neg_one 0 two_ne_zero.symm]
    · contrapose! hζ₀
      apply Complex.ext <;> simp [hζ₀, h.2]
  have : ¬eval (↑q) (cyclotomic n ℂ) = 0 := by
    erw [cyclotomic.eval_apply q n (algebraMap ℝ ℂ)]
    simp only [Complex.coe_algebraMap, Complex.ofReal_eq_zero]
    exact (cyclotomic_pos' n hq').ne.symm
  suffices Units.mk0 ‖(cyclotomic n ℂ).eval ↑q‖₊ (by simp [this]) <
      Units.mk0 (Real.toNNReal (q + 1)) (by simp; linarith) ^ totient n by
    simp only [← Units.val_lt_val, Units.val_pow_eq_pow_val, Units.val_mk0, ← NNReal.coe_lt_coe,
      hq'.le, Real.toNNReal_lt_toNNReal_iff_of_nonneg, coe_nnnorm, Complex.norm_eq_abs,
      NNReal.coe_pow, Real.coe_toNNReal', max_eq_left, sub_nonneg] at this
    convert this using 2
    · erw [cyclotomic.eval_apply q n (algebraMap ℝ ℂ), eq_comm]
      

Proof state:
case h.e'_3
n : ℕ
q : ℝ
hn' : 3 ≤ n
hq' : 1 < q
hn : 0 < n
hq : 0 < q
hfor : ∀ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ ≤ q + 1
ζ : ℂ := Complex.exp (2 * ↑Real.pi * Complex.I / ↑n)
hζ : IsPrimitiveRoot ζ n
hex : ∃ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ < q + 1
this✝ : ¬eval (↑q) (cyclotomic n ℂ) = 0
this : Complex.abs (eval (↑q) (cyclotomic n ℂ)) < max (q + 1) 0 ^ φ n
⊢ Complex.abs ((algebraMap ℝ ℂ) (eval q (cyclotomic n ℝ))) = eval q (cyclotomic n ℝ)

Next tactic:
simp [cyclotomic_nonneg n hq'.le]
theorem cyclotomic_eval_lt_add_one_pow_totient {n : ℕ} {q : ℝ} (hn' : 3 ≤ n) (hq' : 1 < q) :
    (cyclotomic n ℝ).eval q < (q + 1) ^ totient n := by
  have hn : 0 < n := pos_of_gt hn'
  have hq := zero_lt_one.trans hq'
  have hfor : ∀ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ ≤ q + 1 := by
    intro ζ' hζ'
    rw [mem_primitiveRoots hn] at hζ'
    convert norm_sub_le (↑q) ζ'
    · rw [Complex.norm_real, Real.norm_of_nonneg (zero_le_one.trans_lt hq').le]
    · rw [hζ'.norm'_eq_one hn.ne']
  let ζ := Complex.exp (2 * ↑Real.pi * Complex.I / ↑n)
  have hζ : IsPrimitiveRoot ζ n := Complex.isPrimitiveRoot_exp n hn.ne'
  have hex : ∃ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ < q + 1 := by
    refine' ⟨ζ, (mem_primitiveRoots hn).mpr hζ, _⟩
    suffices ¬SameRay ℝ (q : ℂ) (-ζ) by
      convert norm_add_lt_of_not_sameRay this using 2
      · rw [Complex.norm_eq_abs, Complex.abs_ofReal]
        symm
        exact abs_eq_self.mpr hq.le
      · simp [abs_of_pos hq, hζ.norm'_eq_one hn.ne', -Complex.norm_eq_abs]
    rw [Complex.sameRay_iff]
    push_neg
    refine' ⟨mod_cast hq.ne', neg_ne_zero.mpr <| hζ.ne_zero hn.ne', _⟩
    rw [Complex.arg_ofReal_of_nonneg hq.le, Ne.def, eq_comm]
    intro h
    rw [Complex.arg_eq_zero_iff, Complex.neg_re, neg_nonneg, Complex.neg_im, neg_eq_zero] at h
    have hζ₀ : ζ ≠ 0 := by
      clear_value ζ
      rintro rfl
      exact hn.ne' (hζ.unique IsPrimitiveRoot.zero)
    have : ζ.re < 0 ∧ ζ.im = 0 := ⟨h.1.lt_of_ne ?_, h.2⟩
    rw [← Complex.arg_eq_pi_iff, hζ.arg_eq_pi_iff hn.ne'] at this
    rw [this] at hζ
    linarith [hζ.unique <| IsPrimitiveRoot.neg_one 0 two_ne_zero.symm]
    · contrapose! hζ₀
      apply Complex.ext <;> simp [hζ₀, h.2]
  have : ¬eval (↑q) (cyclotomic n ℂ) = 0 := by
    erw [cyclotomic.eval_apply q n (algebraMap ℝ ℂ)]
    simp only [Complex.coe_algebraMap, Complex.ofReal_eq_zero]
    exact (cyclotomic_pos' n hq').ne.symm
  suffices Units.mk0 ‖(cyclotomic n ℂ).eval ↑q‖₊ (by simp [this]) <
      Units.mk0 (Real.toNNReal (q + 1)) (by simp; linarith) ^ totient n by
    simp only [← Units.val_lt_val, Units.val_pow_eq_pow_val, Units.val_mk0, ← NNReal.coe_lt_coe,
      hq'.le, Real.toNNReal_lt_toNNReal_iff_of_nonneg, coe_nnnorm, Complex.norm_eq_abs,
      NNReal.coe_pow, Real.coe_toNNReal', max_eq_left, sub_nonneg] at this
    convert this using 2
    · erw [cyclotomic.eval_apply q n (algebraMap ℝ ℂ), eq_comm]
      simp [cyclotomic_nonneg n hq'.le]
    

Proof state:
case h.e'_4.h.e'_5
n : ℕ
q : ℝ
hn' : 3 ≤ n
hq' : 1 < q
hn : 0 < n
hq : 0 < q
hfor : ∀ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ ≤ q + 1
ζ : ℂ := Complex.exp (2 * ↑Real.pi * Complex.I / ↑n)
hζ : IsPrimitiveRoot ζ n
hex : ∃ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ < q + 1
this✝ : ¬eval (↑q) (cyclotomic n ℂ) = 0
this : Complex.abs (eval (↑q) (cyclotomic n ℂ)) < max (q + 1) 0 ^ φ n
⊢ q + 1 = max (q + 1) 0

Next tactic:
rw [eq_comm, max_eq_left_iff]
theorem cyclotomic_eval_lt_add_one_pow_totient {n : ℕ} {q : ℝ} (hn' : 3 ≤ n) (hq' : 1 < q) :
    (cyclotomic n ℝ).eval q < (q + 1) ^ totient n := by
  have hn : 0 < n := pos_of_gt hn'
  have hq := zero_lt_one.trans hq'
  have hfor : ∀ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ ≤ q + 1 := by
    intro ζ' hζ'
    rw [mem_primitiveRoots hn] at hζ'
    convert norm_sub_le (↑q) ζ'
    · rw [Complex.norm_real, Real.norm_of_nonneg (zero_le_one.trans_lt hq').le]
    · rw [hζ'.norm'_eq_one hn.ne']
  let ζ := Complex.exp (2 * ↑Real.pi * Complex.I / ↑n)
  have hζ : IsPrimitiveRoot ζ n := Complex.isPrimitiveRoot_exp n hn.ne'
  have hex : ∃ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ < q + 1 := by
    refine' ⟨ζ, (mem_primitiveRoots hn).mpr hζ, _⟩
    suffices ¬SameRay ℝ (q : ℂ) (-ζ) by
      convert norm_add_lt_of_not_sameRay this using 2
      · rw [Complex.norm_eq_abs, Complex.abs_ofReal]
        symm
        exact abs_eq_self.mpr hq.le
      · simp [abs_of_pos hq, hζ.norm'_eq_one hn.ne', -Complex.norm_eq_abs]
    rw [Complex.sameRay_iff]
    push_neg
    refine' ⟨mod_cast hq.ne', neg_ne_zero.mpr <| hζ.ne_zero hn.ne', _⟩
    rw [Complex.arg_ofReal_of_nonneg hq.le, Ne.def, eq_comm]
    intro h
    rw [Complex.arg_eq_zero_iff, Complex.neg_re, neg_nonneg, Complex.neg_im, neg_eq_zero] at h
    have hζ₀ : ζ ≠ 0 := by
      clear_value ζ
      rintro rfl
      exact hn.ne' (hζ.unique IsPrimitiveRoot.zero)
    have : ζ.re < 0 ∧ ζ.im = 0 := ⟨h.1.lt_of_ne ?_, h.2⟩
    rw [← Complex.arg_eq_pi_iff, hζ.arg_eq_pi_iff hn.ne'] at this
    rw [this] at hζ
    linarith [hζ.unique <| IsPrimitiveRoot.neg_one 0 two_ne_zero.symm]
    · contrapose! hζ₀
      apply Complex.ext <;> simp [hζ₀, h.2]
  have : ¬eval (↑q) (cyclotomic n ℂ) = 0 := by
    erw [cyclotomic.eval_apply q n (algebraMap ℝ ℂ)]
    simp only [Complex.coe_algebraMap, Complex.ofReal_eq_zero]
    exact (cyclotomic_pos' n hq').ne.symm
  suffices Units.mk0 ‖(cyclotomic n ℂ).eval ↑q‖₊ (by simp [this]) <
      Units.mk0 (Real.toNNReal (q + 1)) (by simp; linarith) ^ totient n by
    simp only [← Units.val_lt_val, Units.val_pow_eq_pow_val, Units.val_mk0, ← NNReal.coe_lt_coe,
      hq'.le, Real.toNNReal_lt_toNNReal_iff_of_nonneg, coe_nnnorm, Complex.norm_eq_abs,
      NNReal.coe_pow, Real.coe_toNNReal', max_eq_left, sub_nonneg] at this
    convert this using 2
    · erw [cyclotomic.eval_apply q n (algebraMap ℝ ℂ), eq_comm]
      simp [cyclotomic_nonneg n hq'.le]
    rw [eq_comm, max_eq_left_iff]
    

Proof state:
case h.e'_4.h.e'_5
n : ℕ
q : ℝ
hn' : 3 ≤ n
hq' : 1 < q
hn : 0 < n
hq : 0 < q
hfor : ∀ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ ≤ q + 1
ζ : ℂ := Complex.exp (2 * ↑Real.pi * Complex.I / ↑n)
hζ : IsPrimitiveRoot ζ n
hex : ∃ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ < q + 1
this✝ : ¬eval (↑q) (cyclotomic n ℂ) = 0
this : Complex.abs (eval (↑q) (cyclotomic n ℂ)) < max (q + 1) 0 ^ φ n
⊢ 0 ≤ q + 1

Next tactic:
linarith
theorem cyclotomic_eval_lt_add_one_pow_totient {n : ℕ} {q : ℝ} (hn' : 3 ≤ n) (hq' : 1 < q) :
    (cyclotomic n ℝ).eval q < (q + 1) ^ totient n := by
  have hn : 0 < n := pos_of_gt hn'
  have hq := zero_lt_one.trans hq'
  have hfor : ∀ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ ≤ q + 1 := by
    intro ζ' hζ'
    rw [mem_primitiveRoots hn] at hζ'
    convert norm_sub_le (↑q) ζ'
    · rw [Complex.norm_real, Real.norm_of_nonneg (zero_le_one.trans_lt hq').le]
    · rw [hζ'.norm'_eq_one hn.ne']
  let ζ := Complex.exp (2 * ↑Real.pi * Complex.I / ↑n)
  have hζ : IsPrimitiveRoot ζ n := Complex.isPrimitiveRoot_exp n hn.ne'
  have hex : ∃ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ < q + 1 := by
    refine' ⟨ζ, (mem_primitiveRoots hn).mpr hζ, _⟩
    suffices ¬SameRay ℝ (q : ℂ) (-ζ) by
      convert norm_add_lt_of_not_sameRay this using 2
      · rw [Complex.norm_eq_abs, Complex.abs_ofReal]
        symm
        exact abs_eq_self.mpr hq.le
      · simp [abs_of_pos hq, hζ.norm'_eq_one hn.ne', -Complex.norm_eq_abs]
    rw [Complex.sameRay_iff]
    push_neg
    refine' ⟨mod_cast hq.ne', neg_ne_zero.mpr <| hζ.ne_zero hn.ne', _⟩
    rw [Complex.arg_ofReal_of_nonneg hq.le, Ne.def, eq_comm]
    intro h
    rw [Complex.arg_eq_zero_iff, Complex.neg_re, neg_nonneg, Complex.neg_im, neg_eq_zero] at h
    have hζ₀ : ζ ≠ 0 := by
      clear_value ζ
      rintro rfl
      exact hn.ne' (hζ.unique IsPrimitiveRoot.zero)
    have : ζ.re < 0 ∧ ζ.im = 0 := ⟨h.1.lt_of_ne ?_, h.2⟩
    rw [← Complex.arg_eq_pi_iff, hζ.arg_eq_pi_iff hn.ne'] at this
    rw [this] at hζ
    linarith [hζ.unique <| IsPrimitiveRoot.neg_one 0 two_ne_zero.symm]
    · contrapose! hζ₀
      apply Complex.ext <;> simp [hζ₀, h.2]
  have : ¬eval (↑q) (cyclotomic n ℂ) = 0 := by
    erw [cyclotomic.eval_apply q n (algebraMap ℝ ℂ)]
    simp only [Complex.coe_algebraMap, Complex.ofReal_eq_zero]
    exact (cyclotomic_pos' n hq').ne.symm
  suffices Units.mk0 ‖(cyclotomic n ℂ).eval ↑q‖₊ (by simp [this]) <
      Units.mk0 (Real.toNNReal (q + 1)) (by simp; linarith) ^ totient n by
    simp only [← Units.val_lt_val, Units.val_pow_eq_pow_val, Units.val_mk0, ← NNReal.coe_lt_coe,
      hq'.le, Real.toNNReal_lt_toNNReal_iff_of_nonneg, coe_nnnorm, Complex.norm_eq_abs,
      NNReal.coe_pow, Real.coe_toNNReal', max_eq_left, sub_nonneg] at this
    convert this using 2
    · erw [cyclotomic.eval_apply q n (algebraMap ℝ ℂ), eq_comm]
      simp [cyclotomic_nonneg n hq'.le]
    rw [eq_comm, max_eq_left_iff]
    linarith
  

Proof state:
n : ℕ
q : ℝ
hn' : 3 ≤ n
hq' : 1 < q
hn : 0 < n
hq : 0 < q
hfor : ∀ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ ≤ q + 1
ζ : ℂ := Complex.exp (2 * ↑Real.pi * Complex.I / ↑n)
hζ : IsPrimitiveRoot ζ n
hex : ∃ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ < q + 1
this : ¬eval (↑q) (cyclotomic n ℂ) = 0
⊢ Units.mk0 ‖eval (↑q) (cyclotomic n ℂ)‖₊ (_ : ¬‖eval (↑q) (cyclotomic n ℂ)‖₊ = 0) <
    Units.mk0 (Real.toNNReal (q + 1)) (_ : Real.toNNReal (q + 1) ≠ 0) ^ φ n

Next tactic:
simp only [cyclotomic_eq_prod_X_sub_primitiveRoots hζ, eval_prod, eval_C, eval_X, eval_sub,
    nnnorm_prod, Units.mk0_prod]
theorem cyclotomic_eval_lt_add_one_pow_totient {n : ℕ} {q : ℝ} (hn' : 3 ≤ n) (hq' : 1 < q) :
    (cyclotomic n ℝ).eval q < (q + 1) ^ totient n := by
  have hn : 0 < n := pos_of_gt hn'
  have hq := zero_lt_one.trans hq'
  have hfor : ∀ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ ≤ q + 1 := by
    intro ζ' hζ'
    rw [mem_primitiveRoots hn] at hζ'
    convert norm_sub_le (↑q) ζ'
    · rw [Complex.norm_real, Real.norm_of_nonneg (zero_le_one.trans_lt hq').le]
    · rw [hζ'.norm'_eq_one hn.ne']
  let ζ := Complex.exp (2 * ↑Real.pi * Complex.I / ↑n)
  have hζ : IsPrimitiveRoot ζ n := Complex.isPrimitiveRoot_exp n hn.ne'
  have hex : ∃ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ < q + 1 := by
    refine' ⟨ζ, (mem_primitiveRoots hn).mpr hζ, _⟩
    suffices ¬SameRay ℝ (q : ℂ) (-ζ) by
      convert norm_add_lt_of_not_sameRay this using 2
      · rw [Complex.norm_eq_abs, Complex.abs_ofReal]
        symm
        exact abs_eq_self.mpr hq.le
      · simp [abs_of_pos hq, hζ.norm'_eq_one hn.ne', -Complex.norm_eq_abs]
    rw [Complex.sameRay_iff]
    push_neg
    refine' ⟨mod_cast hq.ne', neg_ne_zero.mpr <| hζ.ne_zero hn.ne', _⟩
    rw [Complex.arg_ofReal_of_nonneg hq.le, Ne.def, eq_comm]
    intro h
    rw [Complex.arg_eq_zero_iff, Complex.neg_re, neg_nonneg, Complex.neg_im, neg_eq_zero] at h
    have hζ₀ : ζ ≠ 0 := by
      clear_value ζ
      rintro rfl
      exact hn.ne' (hζ.unique IsPrimitiveRoot.zero)
    have : ζ.re < 0 ∧ ζ.im = 0 := ⟨h.1.lt_of_ne ?_, h.2⟩
    rw [← Complex.arg_eq_pi_iff, hζ.arg_eq_pi_iff hn.ne'] at this
    rw [this] at hζ
    linarith [hζ.unique <| IsPrimitiveRoot.neg_one 0 two_ne_zero.symm]
    · contrapose! hζ₀
      apply Complex.ext <;> simp [hζ₀, h.2]
  have : ¬eval (↑q) (cyclotomic n ℂ) = 0 := by
    erw [cyclotomic.eval_apply q n (algebraMap ℝ ℂ)]
    simp only [Complex.coe_algebraMap, Complex.ofReal_eq_zero]
    exact (cyclotomic_pos' n hq').ne.symm
  suffices Units.mk0 ‖(cyclotomic n ℂ).eval ↑q‖₊ (by simp [this]) <
      Units.mk0 (Real.toNNReal (q + 1)) (by simp; linarith) ^ totient n by
    simp only [← Units.val_lt_val, Units.val_pow_eq_pow_val, Units.val_mk0, ← NNReal.coe_lt_coe,
      hq'.le, Real.toNNReal_lt_toNNReal_iff_of_nonneg, coe_nnnorm, Complex.norm_eq_abs,
      NNReal.coe_pow, Real.coe_toNNReal', max_eq_left, sub_nonneg] at this
    convert this using 2
    · erw [cyclotomic.eval_apply q n (algebraMap ℝ ℂ), eq_comm]
      simp [cyclotomic_nonneg n hq'.le]
    rw [eq_comm, max_eq_left_iff]
    linarith
  simp only [cyclotomic_eq_prod_X_sub_primitiveRoots hζ, eval_prod, eval_C, eval_X, eval_sub,
    nnnorm_prod, Units.mk0_prod]
  

Proof state:
n : ℕ
q : ℝ
hn' : 3 ≤ n
hq' : 1 < q
hn : 0 < n
hq : 0 < q
hfor : ∀ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ ≤ q + 1
ζ : ℂ := Complex.exp (2 * ↑Real.pi * Complex.I / ↑n)
hζ : IsPrimitiveRoot ζ n
hex : ∃ ζ' ∈ primitiveRoots n ℂ, ‖↑q - ζ'‖ < q + 1
this : ¬eval (↑q) (cyclotomic n ℂ) = 0
⊢ ∏ b in attach (primitiveRoots n ℂ), Units.mk0 ‖↑q - ↑b‖₊ (_ : ‖↑q - ↑b‖₊ = 0 → False) <
    Units.mk0 (Real.toNNReal (q + 1)) (_ : Real.toNNReal (q + 1) ≠ 0) ^ φ n

Next tactic:
convert Finset.prod_lt_prod' (M := NNRealˣ) _ _