l3lab/ntp-mathlib huggingface dataset:
/-- A topological ring is `J`-adic if and only if it admits the powers of `J` as a basis of
open neighborhoods of zero. -/
theorem isAdic_iff [top : TopologicalSpace R] [TopologicalRing R] {J : Ideal R} :
    IsAdic J ↔
      (∀ n : ℕ, IsOpen ((J ^ n : Ideal R) : Set R)) ∧
        ∀ s ∈ 𝓝 (0 : R), ∃ n : ℕ, ((J ^ n : Ideal R) : Set R) ⊆ s := by
  constructor
  · intro H
    change _ = _ at H
    rw [H]
    letI := J.adicTopology
    constructor
    · intro n
      exact (J.openAddSubgroup n).isOpen'
    · intro s hs
      simpa using J.hasBasis_nhds_zero_adic.mem_iff.mp hs
  · rintro ⟨H₁, H₂⟩
    apply TopologicalAddGroup.ext
    · 

Proof state:
case mpr.intro.tg
R : Type u_1
inst✝¹ : CommRing R
top : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
H₁ : ∀ (n : ℕ), IsOpen ↑(J ^ n)
H₂ : ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
⊢ TopologicalAddGroup R

Next tactic:
apply @TopologicalRing.to_topologicalAddGroup
/-- A topological ring is `J`-adic if and only if it admits the powers of `J` as a basis of
open neighborhoods of zero. -/
theorem isAdic_iff [top : TopologicalSpace R] [TopologicalRing R] {J : Ideal R} :
    IsAdic J ↔
      (∀ n : ℕ, IsOpen ((J ^ n : Ideal R) : Set R)) ∧
        ∀ s ∈ 𝓝 (0 : R), ∃ n : ℕ, ((J ^ n : Ideal R) : Set R) ⊆ s := by
  constructor
  · intro H
    change _ = _ at H
    rw [H]
    letI := J.adicTopology
    constructor
    · intro n
      exact (J.openAddSubgroup n).isOpen'
    · intro s hs
      simpa using J.hasBasis_nhds_zero_adic.mem_iff.mp hs
  · rintro ⟨H₁, H₂⟩
    apply TopologicalAddGroup.ext
    · apply @TopologicalRing.to_topologicalAddGroup
    · 

Proof state:
case mpr.intro.tg'
R : Type u_1
inst✝¹ : CommRing R
top : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
H₁ : ∀ (n : ℕ), IsOpen ↑(J ^ n)
H₂ : ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
⊢ TopologicalAddGroup R

Next tactic:
apply (RingSubgroupsBasis.toRingFilterBasis _).toAddGroupFilterBasis.isTopologicalAddGroup
/-- A topological ring is `J`-adic if and only if it admits the powers of `J` as a basis of
open neighborhoods of zero. -/
theorem isAdic_iff [top : TopologicalSpace R] [TopologicalRing R] {J : Ideal R} :
    IsAdic J ↔
      (∀ n : ℕ, IsOpen ((J ^ n : Ideal R) : Set R)) ∧
        ∀ s ∈ 𝓝 (0 : R), ∃ n : ℕ, ((J ^ n : Ideal R) : Set R) ⊆ s := by
  constructor
  · intro H
    change _ = _ at H
    rw [H]
    letI := J.adicTopology
    constructor
    · intro n
      exact (J.openAddSubgroup n).isOpen'
    · intro s hs
      simpa using J.hasBasis_nhds_zero_adic.mem_iff.mp hs
  · rintro ⟨H₁, H₂⟩
    apply TopologicalAddGroup.ext
    · apply @TopologicalRing.to_topologicalAddGroup
    · apply (RingSubgroupsBasis.toRingFilterBasis _).toAddGroupFilterBasis.isTopologicalAddGroup
    · 

Proof state:
case mpr.intro.h
R : Type u_1
inst✝¹ : CommRing R
top : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
H₁ : ∀ (n : ℕ), IsOpen ↑(J ^ n)
H₂ : ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
⊢ 𝓝 0 = 𝓝 0

Next tactic:
ext s
/-- A topological ring is `J`-adic if and only if it admits the powers of `J` as a basis of
open neighborhoods of zero. -/
theorem isAdic_iff [top : TopologicalSpace R] [TopologicalRing R] {J : Ideal R} :
    IsAdic J ↔
      (∀ n : ℕ, IsOpen ((J ^ n : Ideal R) : Set R)) ∧
        ∀ s ∈ 𝓝 (0 : R), ∃ n : ℕ, ((J ^ n : Ideal R) : Set R) ⊆ s := by
  constructor
  · intro H
    change _ = _ at H
    rw [H]
    letI := J.adicTopology
    constructor
    · intro n
      exact (J.openAddSubgroup n).isOpen'
    · intro s hs
      simpa using J.hasBasis_nhds_zero_adic.mem_iff.mp hs
  · rintro ⟨H₁, H₂⟩
    apply TopologicalAddGroup.ext
    · apply @TopologicalRing.to_topologicalAddGroup
    · apply (RingSubgroupsBasis.toRingFilterBasis _).toAddGroupFilterBasis.isTopologicalAddGroup
    · ext s
      

Proof state:
case mpr.intro.h.a
R : Type u_1
inst✝¹ : CommRing R
top : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
H₁ : ∀ (n : ℕ), IsOpen ↑(J ^ n)
H₂ : ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
s : Set R
⊢ s ∈ 𝓝 0 ↔ s ∈ 𝓝 0

Next tactic:
letI := Ideal.adic_basis J
/-- A topological ring is `J`-adic if and only if it admits the powers of `J` as a basis of
open neighborhoods of zero. -/
theorem isAdic_iff [top : TopologicalSpace R] [TopologicalRing R] {J : Ideal R} :
    IsAdic J ↔
      (∀ n : ℕ, IsOpen ((J ^ n : Ideal R) : Set R)) ∧
        ∀ s ∈ 𝓝 (0 : R), ∃ n : ℕ, ((J ^ n : Ideal R) : Set R) ⊆ s := by
  constructor
  · intro H
    change _ = _ at H
    rw [H]
    letI := J.adicTopology
    constructor
    · intro n
      exact (J.openAddSubgroup n).isOpen'
    · intro s hs
      simpa using J.hasBasis_nhds_zero_adic.mem_iff.mp hs
  · rintro ⟨H₁, H₂⟩
    apply TopologicalAddGroup.ext
    · apply @TopologicalRing.to_topologicalAddGroup
    · apply (RingSubgroupsBasis.toRingFilterBasis _).toAddGroupFilterBasis.isTopologicalAddGroup
    · ext s
      letI := Ideal.adic_basis J
      

Proof state:
case mpr.intro.h.a
R : Type u_1
inst✝¹ : CommRing R
top : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
H₁ : ∀ (n : ℕ), IsOpen ↑(J ^ n)
H₂ : ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
s : Set R
this : SubmodulesRingBasis fun n => J ^ n • ⊤ := Ideal.adic_basis J
⊢ s ∈ 𝓝 0 ↔ s ∈ 𝓝 0

Next tactic:
rw [J.hasBasis_nhds_zero_adic.mem_iff]
/-- A topological ring is `J`-adic if and only if it admits the powers of `J` as a basis of
open neighborhoods of zero. -/
theorem isAdic_iff [top : TopologicalSpace R] [TopologicalRing R] {J : Ideal R} :
    IsAdic J ↔
      (∀ n : ℕ, IsOpen ((J ^ n : Ideal R) : Set R)) ∧
        ∀ s ∈ 𝓝 (0 : R), ∃ n : ℕ, ((J ^ n : Ideal R) : Set R) ⊆ s := by
  constructor
  · intro H
    change _ = _ at H
    rw [H]
    letI := J.adicTopology
    constructor
    · intro n
      exact (J.openAddSubgroup n).isOpen'
    · intro s hs
      simpa using J.hasBasis_nhds_zero_adic.mem_iff.mp hs
  · rintro ⟨H₁, H₂⟩
    apply TopologicalAddGroup.ext
    · apply @TopologicalRing.to_topologicalAddGroup
    · apply (RingSubgroupsBasis.toRingFilterBasis _).toAddGroupFilterBasis.isTopologicalAddGroup
    · ext s
      letI := Ideal.adic_basis J
      rw [J.hasBasis_nhds_zero_adic.mem_iff]
      

Proof state:
case mpr.intro.h.a
R : Type u_1
inst✝¹ : CommRing R
top : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
H₁ : ∀ (n : ℕ), IsOpen ↑(J ^ n)
H₂ : ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
s : Set R
this : SubmodulesRingBasis fun n => J ^ n • ⊤ := Ideal.adic_basis J
⊢ s ∈ 𝓝 0 ↔ ∃ i, True ∧ ↑(J ^ i) ⊆ s

Next tactic:
constructor
/-- A topological ring is `J`-adic if and only if it admits the powers of `J` as a basis of
open neighborhoods of zero. -/
theorem isAdic_iff [top : TopologicalSpace R] [TopologicalRing R] {J : Ideal R} :
    IsAdic J ↔
      (∀ n : ℕ, IsOpen ((J ^ n : Ideal R) : Set R)) ∧
        ∀ s ∈ 𝓝 (0 : R), ∃ n : ℕ, ((J ^ n : Ideal R) : Set R) ⊆ s := by
  constructor
  · intro H
    change _ = _ at H
    rw [H]
    letI := J.adicTopology
    constructor
    · intro n
      exact (J.openAddSubgroup n).isOpen'
    · intro s hs
      simpa using J.hasBasis_nhds_zero_adic.mem_iff.mp hs
  · rintro ⟨H₁, H₂⟩
    apply TopologicalAddGroup.ext
    · apply @TopologicalRing.to_topologicalAddGroup
    · apply (RingSubgroupsBasis.toRingFilterBasis _).toAddGroupFilterBasis.isTopologicalAddGroup
    · ext s
      letI := Ideal.adic_basis J
      rw [J.hasBasis_nhds_zero_adic.mem_iff]
      constructor <;> 

Proof state:
case mpr.intro.h.a.mp
R : Type u_1
inst✝¹ : CommRing R
top : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
H₁ : ∀ (n : ℕ), IsOpen ↑(J ^ n)
H₂ : ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
s : Set R
this : SubmodulesRingBasis fun n => J ^ n • ⊤ := Ideal.adic_basis J
⊢ s ∈ 𝓝 0 → ∃ i, True ∧ ↑(J ^ i) ⊆ s

Next tactic:
intro H
/-- A topological ring is `J`-adic if and only if it admits the powers of `J` as a basis of
open neighborhoods of zero. -/
theorem isAdic_iff [top : TopologicalSpace R] [TopologicalRing R] {J : Ideal R} :
    IsAdic J ↔
      (∀ n : ℕ, IsOpen ((J ^ n : Ideal R) : Set R)) ∧
        ∀ s ∈ 𝓝 (0 : R), ∃ n : ℕ, ((J ^ n : Ideal R) : Set R) ⊆ s := by
  constructor
  · intro H
    change _ = _ at H
    rw [H]
    letI := J.adicTopology
    constructor
    · intro n
      exact (J.openAddSubgroup n).isOpen'
    · intro s hs
      simpa using J.hasBasis_nhds_zero_adic.mem_iff.mp hs
  · rintro ⟨H₁, H₂⟩
    apply TopologicalAddGroup.ext
    · apply @TopologicalRing.to_topologicalAddGroup
    · apply (RingSubgroupsBasis.toRingFilterBasis _).toAddGroupFilterBasis.isTopologicalAddGroup
    · ext s
      letI := Ideal.adic_basis J
      rw [J.hasBasis_nhds_zero_adic.mem_iff]
      constructor <;> 

Proof state:
case mpr.intro.h.a.mpr
R : Type u_1
inst✝¹ : CommRing R
top : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
H₁ : ∀ (n : ℕ), IsOpen ↑(J ^ n)
H₂ : ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
s : Set R
this : SubmodulesRingBasis fun n => J ^ n • ⊤ := Ideal.adic_basis J
⊢ (∃ i, True ∧ ↑(J ^ i) ⊆ s) → s ∈ 𝓝 0

Next tactic:
intro H
/-- A topological ring is `J`-adic if and only if it admits the powers of `J` as a basis of
open neighborhoods of zero. -/
theorem isAdic_iff [top : TopologicalSpace R] [TopologicalRing R] {J : Ideal R} :
    IsAdic J ↔
      (∀ n : ℕ, IsOpen ((J ^ n : Ideal R) : Set R)) ∧
        ∀ s ∈ 𝓝 (0 : R), ∃ n : ℕ, ((J ^ n : Ideal R) : Set R) ⊆ s := by
  constructor
  · intro H
    change _ = _ at H
    rw [H]
    letI := J.adicTopology
    constructor
    · intro n
      exact (J.openAddSubgroup n).isOpen'
    · intro s hs
      simpa using J.hasBasis_nhds_zero_adic.mem_iff.mp hs
  · rintro ⟨H₁, H₂⟩
    apply TopologicalAddGroup.ext
    · apply @TopologicalRing.to_topologicalAddGroup
    · apply (RingSubgroupsBasis.toRingFilterBasis _).toAddGroupFilterBasis.isTopologicalAddGroup
    · ext s
      letI := Ideal.adic_basis J
      rw [J.hasBasis_nhds_zero_adic.mem_iff]
      constructor <;> intro H
      · 

Proof state:
case mpr.intro.h.a.mp
R : Type u_1
inst✝¹ : CommRing R
top : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
H₁ : ∀ (n : ℕ), IsOpen ↑(J ^ n)
H₂ : ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
s : Set R
this : SubmodulesRingBasis fun n => J ^ n • ⊤ := Ideal.adic_basis J
H : s ∈ 𝓝 0
⊢ ∃ i, True ∧ ↑(J ^ i) ⊆ s

Next tactic:
rcases H₂ s H with ⟨n, h⟩
/-- A topological ring is `J`-adic if and only if it admits the powers of `J` as a basis of
open neighborhoods of zero. -/
theorem isAdic_iff [top : TopologicalSpace R] [TopologicalRing R] {J : Ideal R} :
    IsAdic J ↔
      (∀ n : ℕ, IsOpen ((J ^ n : Ideal R) : Set R)) ∧
        ∀ s ∈ 𝓝 (0 : R), ∃ n : ℕ, ((J ^ n : Ideal R) : Set R) ⊆ s := by
  constructor
  · intro H
    change _ = _ at H
    rw [H]
    letI := J.adicTopology
    constructor
    · intro n
      exact (J.openAddSubgroup n).isOpen'
    · intro s hs
      simpa using J.hasBasis_nhds_zero_adic.mem_iff.mp hs
  · rintro ⟨H₁, H₂⟩
    apply TopologicalAddGroup.ext
    · apply @TopologicalRing.to_topologicalAddGroup
    · apply (RingSubgroupsBasis.toRingFilterBasis _).toAddGroupFilterBasis.isTopologicalAddGroup
    · ext s
      letI := Ideal.adic_basis J
      rw [J.hasBasis_nhds_zero_adic.mem_iff]
      constructor <;> intro H
      · rcases H₂ s H with ⟨n, h⟩
        

Proof state:
case mpr.intro.h.a.mp.intro
R : Type u_1
inst✝¹ : CommRing R
top : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
H₁ : ∀ (n : ℕ), IsOpen ↑(J ^ n)
H₂ : ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
s : Set R
this : SubmodulesRingBasis fun n => J ^ n • ⊤ := Ideal.adic_basis J
H : s ∈ 𝓝 0
n : ℕ
h : ↑(J ^ n) ⊆ s
⊢ ∃ i, True ∧ ↑(J ^ i) ⊆ s

Next tactic:
exact ⟨n, trivial, h⟩
/-- A topological ring is `J`-adic if and only if it admits the powers of `J` as a basis of
open neighborhoods of zero. -/
theorem isAdic_iff [top : TopologicalSpace R] [TopologicalRing R] {J : Ideal R} :
    IsAdic J ↔
      (∀ n : ℕ, IsOpen ((J ^ n : Ideal R) : Set R)) ∧
        ∀ s ∈ 𝓝 (0 : R), ∃ n : ℕ, ((J ^ n : Ideal R) : Set R) ⊆ s := by
  constructor
  · intro H
    change _ = _ at H
    rw [H]
    letI := J.adicTopology
    constructor
    · intro n
      exact (J.openAddSubgroup n).isOpen'
    · intro s hs
      simpa using J.hasBasis_nhds_zero_adic.mem_iff.mp hs
  · rintro ⟨H₁, H₂⟩
    apply TopologicalAddGroup.ext
    · apply @TopologicalRing.to_topologicalAddGroup
    · apply (RingSubgroupsBasis.toRingFilterBasis _).toAddGroupFilterBasis.isTopologicalAddGroup
    · ext s
      letI := Ideal.adic_basis J
      rw [J.hasBasis_nhds_zero_adic.mem_iff]
      constructor <;> intro H
      · rcases H₂ s H with ⟨n, h⟩
        exact ⟨n, trivial, h⟩
      · 

Proof state:
case mpr.intro.h.a.mpr
R : Type u_1
inst✝¹ : CommRing R
top : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
H₁ : ∀ (n : ℕ), IsOpen ↑(J ^ n)
H₂ : ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
s : Set R
this : SubmodulesRingBasis fun n => J ^ n • ⊤ := Ideal.adic_basis J
H : ∃ i, True ∧ ↑(J ^ i) ⊆ s
⊢ s ∈ 𝓝 0

Next tactic:
rcases H with ⟨n, -, hn⟩
/-- A topological ring is `J`-adic if and only if it admits the powers of `J` as a basis of
open neighborhoods of zero. -/
theorem isAdic_iff [top : TopologicalSpace R] [TopologicalRing R] {J : Ideal R} :
    IsAdic J ↔
      (∀ n : ℕ, IsOpen ((J ^ n : Ideal R) : Set R)) ∧
        ∀ s ∈ 𝓝 (0 : R), ∃ n : ℕ, ((J ^ n : Ideal R) : Set R) ⊆ s := by
  constructor
  · intro H
    change _ = _ at H
    rw [H]
    letI := J.adicTopology
    constructor
    · intro n
      exact (J.openAddSubgroup n).isOpen'
    · intro s hs
      simpa using J.hasBasis_nhds_zero_adic.mem_iff.mp hs
  · rintro ⟨H₁, H₂⟩
    apply TopologicalAddGroup.ext
    · apply @TopologicalRing.to_topologicalAddGroup
    · apply (RingSubgroupsBasis.toRingFilterBasis _).toAddGroupFilterBasis.isTopologicalAddGroup
    · ext s
      letI := Ideal.adic_basis J
      rw [J.hasBasis_nhds_zero_adic.mem_iff]
      constructor <;> intro H
      · rcases H₂ s H with ⟨n, h⟩
        exact ⟨n, trivial, h⟩
      · rcases H with ⟨n, -, hn⟩
        

Proof state:
case mpr.intro.h.a.mpr.intro.intro
R : Type u_1
inst✝¹ : CommRing R
top : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
H₁ : ∀ (n : ℕ), IsOpen ↑(J ^ n)
H₂ : ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
s : Set R
this : SubmodulesRingBasis fun n => J ^ n • ⊤ := Ideal.adic_basis J
n : ℕ
hn : ↑(J ^ n) ⊆ s
⊢ s ∈ 𝓝 0

Next tactic:
rw [mem_nhds_iff]
/-- A topological ring is `J`-adic if and only if it admits the powers of `J` as a basis of
open neighborhoods of zero. -/
theorem isAdic_iff [top : TopologicalSpace R] [TopologicalRing R] {J : Ideal R} :
    IsAdic J ↔
      (∀ n : ℕ, IsOpen ((J ^ n : Ideal R) : Set R)) ∧
        ∀ s ∈ 𝓝 (0 : R), ∃ n : ℕ, ((J ^ n : Ideal R) : Set R) ⊆ s := by
  constructor
  · intro H
    change _ = _ at H
    rw [H]
    letI := J.adicTopology
    constructor
    · intro n
      exact (J.openAddSubgroup n).isOpen'
    · intro s hs
      simpa using J.hasBasis_nhds_zero_adic.mem_iff.mp hs
  · rintro ⟨H₁, H₂⟩
    apply TopologicalAddGroup.ext
    · apply @TopologicalRing.to_topologicalAddGroup
    · apply (RingSubgroupsBasis.toRingFilterBasis _).toAddGroupFilterBasis.isTopologicalAddGroup
    · ext s
      letI := Ideal.adic_basis J
      rw [J.hasBasis_nhds_zero_adic.mem_iff]
      constructor <;> intro H
      · rcases H₂ s H with ⟨n, h⟩
        exact ⟨n, trivial, h⟩
      · rcases H with ⟨n, -, hn⟩
        rw [mem_nhds_iff]
        

Proof state:
case mpr.intro.h.a.mpr.intro.intro
R : Type u_1
inst✝¹ : CommRing R
top : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
H₁ : ∀ (n : ℕ), IsOpen ↑(J ^ n)
H₂ : ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
s : Set R
this : SubmodulesRingBasis fun n => J ^ n • ⊤ := Ideal.adic_basis J
n : ℕ
hn : ↑(J ^ n) ⊆ s
⊢ ∃ t ⊆ s, IsOpen t ∧ 0 ∈ t

Next tactic:
refine' ⟨_, hn, H₁ n, (J ^ n).zero_mem⟩
theorem is_ideal_adic_pow {J : Ideal R} (h : IsAdic J) {n : ℕ} (hn : 0 < n) : IsAdic (J ^ n) := by
  

Proof state:
R : Type u_1
inst✝² : CommRing R
inst✝¹ : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
h : IsAdic J
n : ℕ
hn : 0 < n
⊢ IsAdic (J ^ n)

Next tactic:
rw [isAdic_iff] at h ⊢
theorem is_ideal_adic_pow {J : Ideal R} (h : IsAdic J) {n : ℕ} (hn : 0 < n) : IsAdic (J ^ n) := by
  rw [isAdic_iff] at h ⊢
  

Proof state:
R : Type u_1
inst✝² : CommRing R
inst✝¹ : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
h : (∀ (n : ℕ), IsOpen ↑(J ^ n)) ∧ ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
n : ℕ
hn : 0 < n
⊢ (∀ (n_1 : ℕ), IsOpen ↑((J ^ n) ^ n_1)) ∧ ∀ s ∈ 𝓝 0, ∃ n_1, ↑((J ^ n) ^ n_1) ⊆ s

Next tactic:
constructor
theorem is_ideal_adic_pow {J : Ideal R} (h : IsAdic J) {n : ℕ} (hn : 0 < n) : IsAdic (J ^ n) := by
  rw [isAdic_iff] at h ⊢
  constructor
  · 

Proof state:
case left
R : Type u_1
inst✝² : CommRing R
inst✝¹ : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
h : (∀ (n : ℕ), IsOpen ↑(J ^ n)) ∧ ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
n : ℕ
hn : 0 < n
⊢ ∀ (n_1 : ℕ), IsOpen ↑((J ^ n) ^ n_1)

Next tactic:
intro m
theorem is_ideal_adic_pow {J : Ideal R} (h : IsAdic J) {n : ℕ} (hn : 0 < n) : IsAdic (J ^ n) := by
  rw [isAdic_iff] at h ⊢
  constructor
  · intro m
    

Proof state:
case left
R : Type u_1
inst✝² : CommRing R
inst✝¹ : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
h : (∀ (n : ℕ), IsOpen ↑(J ^ n)) ∧ ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
n : ℕ
hn : 0 < n
m : ℕ
⊢ IsOpen ↑((J ^ n) ^ m)

Next tactic:
rw [← pow_mul]
theorem is_ideal_adic_pow {J : Ideal R} (h : IsAdic J) {n : ℕ} (hn : 0 < n) : IsAdic (J ^ n) := by
  rw [isAdic_iff] at h ⊢
  constructor
  · intro m
    rw [← pow_mul]
    

Proof state:
case left
R : Type u_1
inst✝² : CommRing R
inst✝¹ : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
h : (∀ (n : ℕ), IsOpen ↑(J ^ n)) ∧ ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
n : ℕ
hn : 0 < n
m : ℕ
⊢ IsOpen ↑(J ^ (n * m))

Next tactic:
apply h.left
theorem is_ideal_adic_pow {J : Ideal R} (h : IsAdic J) {n : ℕ} (hn : 0 < n) : IsAdic (J ^ n) := by
  rw [isAdic_iff] at h ⊢
  constructor
  · intro m
    rw [← pow_mul]
    apply h.left
  · 

Proof state:
case right
R : Type u_1
inst✝² : CommRing R
inst✝¹ : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
h : (∀ (n : ℕ), IsOpen ↑(J ^ n)) ∧ ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
n : ℕ
hn : 0 < n
⊢ ∀ s ∈ 𝓝 0, ∃ n_1, ↑((J ^ n) ^ n_1) ⊆ s

Next tactic:
intro V hV
theorem is_ideal_adic_pow {J : Ideal R} (h : IsAdic J) {n : ℕ} (hn : 0 < n) : IsAdic (J ^ n) := by
  rw [isAdic_iff] at h ⊢
  constructor
  · intro m
    rw [← pow_mul]
    apply h.left
  · intro V hV
    

Proof state:
case right
R : Type u_1
inst✝² : CommRing R
inst✝¹ : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
h : (∀ (n : ℕ), IsOpen ↑(J ^ n)) ∧ ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
n : ℕ
hn : 0 < n
V : Set R
hV : V ∈ 𝓝 0
⊢ ∃ n_1, ↑((J ^ n) ^ n_1) ⊆ V

Next tactic:
cases' h.right V hV with m hm
theorem is_ideal_adic_pow {J : Ideal R} (h : IsAdic J) {n : ℕ} (hn : 0 < n) : IsAdic (J ^ n) := by
  rw [isAdic_iff] at h ⊢
  constructor
  · intro m
    rw [← pow_mul]
    apply h.left
  · intro V hV
    cases' h.right V hV with m hm
    

Proof state:
case right.intro
R : Type u_1
inst✝² : CommRing R
inst✝¹ : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
h : (∀ (n : ℕ), IsOpen ↑(J ^ n)) ∧ ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
n : ℕ
hn : 0 < n
V : Set R
hV : V ∈ 𝓝 0
m : ℕ
hm : ↑(J ^ m) ⊆ V
⊢ ∃ n_1, ↑((J ^ n) ^ n_1) ⊆ V

Next tactic:
use m
theorem is_ideal_adic_pow {J : Ideal R} (h : IsAdic J) {n : ℕ} (hn : 0 < n) : IsAdic (J ^ n) := by
  rw [isAdic_iff] at h ⊢
  constructor
  · intro m
    rw [← pow_mul]
    apply h.left
  · intro V hV
    cases' h.right V hV with m hm
    use m
    

Proof state:
case h
R : Type u_1
inst✝² : CommRing R
inst✝¹ : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
h : (∀ (n : ℕ), IsOpen ↑(J ^ n)) ∧ ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
n : ℕ
hn : 0 < n
V : Set R
hV : V ∈ 𝓝 0
m : ℕ
hm : ↑(J ^ m) ⊆ V
⊢ ↑((J ^ n) ^ m) ⊆ V

Next tactic:
refine' Set.Subset.trans _ hm
theorem is_ideal_adic_pow {J : Ideal R} (h : IsAdic J) {n : ℕ} (hn : 0 < n) : IsAdic (J ^ n) := by
  rw [isAdic_iff] at h ⊢
  constructor
  · intro m
    rw [← pow_mul]
    apply h.left
  · intro V hV
    cases' h.right V hV with m hm
    use m
    refine' Set.Subset.trans _ hm
    

Proof state:
case h
R : Type u_1
inst✝² : CommRing R
inst✝¹ : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
h : (∀ (n : ℕ), IsOpen ↑(J ^ n)) ∧ ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
n : ℕ
hn : 0 < n
V : Set R
hV : V ∈ 𝓝 0
m : ℕ
hm : ↑(J ^ m) ⊆ V
⊢ ↑((J ^ n) ^ m) ⊆ ↑(J ^ m)

Next tactic:
cases n
theorem is_ideal_adic_pow {J : Ideal R} (h : IsAdic J) {n : ℕ} (hn : 0 < n) : IsAdic (J ^ n) := by
  rw [isAdic_iff] at h ⊢
  constructor
  · intro m
    rw [← pow_mul]
    apply h.left
  · intro V hV
    cases' h.right V hV with m hm
    use m
    refine' Set.Subset.trans _ hm
    cases n
    · 

Proof state:
case h.zero
R : Type u_1
inst✝² : CommRing R
inst✝¹ : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
h : (∀ (n : ℕ), IsOpen ↑(J ^ n)) ∧ ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
V : Set R
hV : V ∈ 𝓝 0
m : ℕ
hm : ↑(J ^ m) ⊆ V
hn : 0 < Nat.zero
⊢ ↑((J ^ Nat.zero) ^ m) ⊆ ↑(J ^ m)

Next tactic:
exfalso
theorem is_ideal_adic_pow {J : Ideal R} (h : IsAdic J) {n : ℕ} (hn : 0 < n) : IsAdic (J ^ n) := by
  rw [isAdic_iff] at h ⊢
  constructor
  · intro m
    rw [← pow_mul]
    apply h.left
  · intro V hV
    cases' h.right V hV with m hm
    use m
    refine' Set.Subset.trans _ hm
    cases n
    · exfalso
      

Proof state:
case h.zero.h
R : Type u_1
inst✝² : CommRing R
inst✝¹ : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
h : (∀ (n : ℕ), IsOpen ↑(J ^ n)) ∧ ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
V : Set R
hV : V ∈ 𝓝 0
m : ℕ
hm : ↑(J ^ m) ⊆ V
hn : 0 < Nat.zero
⊢ False

Next tactic:
exact Nat.not_succ_le_zero 0 hn
theorem is_ideal_adic_pow {J : Ideal R} (h : IsAdic J) {n : ℕ} (hn : 0 < n) : IsAdic (J ^ n) := by
  rw [isAdic_iff] at h ⊢
  constructor
  · intro m
    rw [← pow_mul]
    apply h.left
  · intro V hV
    cases' h.right V hV with m hm
    use m
    refine' Set.Subset.trans _ hm
    cases n
    · exfalso
      exact Nat.not_succ_le_zero 0 hn
    

Proof state:
case h.succ
R : Type u_1
inst✝² : CommRing R
inst✝¹ : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
h : (∀ (n : ℕ), IsOpen ↑(J ^ n)) ∧ ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
V : Set R
hV : V ∈ 𝓝 0
m : ℕ
hm : ↑(J ^ m) ⊆ V
n✝ : ℕ
hn : 0 < Nat.succ n✝
⊢ ↑((J ^ Nat.succ n✝) ^ m) ⊆ ↑(J ^ m)

Next tactic:
rw [← pow_mul, Nat.succ_mul]
theorem is_ideal_adic_pow {J : Ideal R} (h : IsAdic J) {n : ℕ} (hn : 0 < n) : IsAdic (J ^ n) := by
  rw [isAdic_iff] at h ⊢
  constructor
  · intro m
    rw [← pow_mul]
    apply h.left
  · intro V hV
    cases' h.right V hV with m hm
    use m
    refine' Set.Subset.trans _ hm
    cases n
    · exfalso
      exact Nat.not_succ_le_zero 0 hn
    rw [← pow_mul, Nat.succ_mul]
    

Proof state:
case h.succ
R : Type u_1
inst✝² : CommRing R
inst✝¹ : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
h : (∀ (n : ℕ), IsOpen ↑(J ^ n)) ∧ ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
V : Set R
hV : V ∈ 𝓝 0
m : ℕ
hm : ↑(J ^ m) ⊆ V
n✝ : ℕ
hn : 0 < Nat.succ n✝
⊢ ↑(J ^ (n✝ * m + m)) ⊆ ↑(J ^ m)

Next tactic:
apply Ideal.pow_le_pow_right
theorem is_ideal_adic_pow {J : Ideal R} (h : IsAdic J) {n : ℕ} (hn : 0 < n) : IsAdic (J ^ n) := by
  rw [isAdic_iff] at h ⊢
  constructor
  · intro m
    rw [← pow_mul]
    apply h.left
  · intro V hV
    cases' h.right V hV with m hm
    use m
    refine' Set.Subset.trans _ hm
    cases n
    · exfalso
      exact Nat.not_succ_le_zero 0 hn
    rw [← pow_mul, Nat.succ_mul]
    apply Ideal.pow_le_pow_right
    

Proof state:
case h.succ.h
R : Type u_1
inst✝² : CommRing R
inst✝¹ : TopologicalSpace R
inst✝ : TopologicalRing R
J : Ideal R
h : (∀ (n : ℕ), IsOpen ↑(J ^ n)) ∧ ∀ s ∈ 𝓝 0, ∃ n, ↑(J ^ n) ⊆ s
V : Set R
hV : V ∈ 𝓝 0
m : ℕ
hm : ↑(J ^ m) ⊆ V
n✝ : ℕ
hn : 0 < Nat.succ n✝
⊢ m ≤ n✝ * m + m

Next tactic:
apply Nat.le_add_left
theorem is_bot_adic_iff {A : Type*} [CommRing A] [TopologicalSpace A] [TopologicalRing A] :
    IsAdic (⊥ : Ideal A) ↔ DiscreteTopology A := by
  

Proof state:
R : Type u_1
inst✝⁵ : CommRing R
inst✝⁴ : TopologicalSpace R
inst✝³ : TopologicalRing R
A : Type u_2
inst✝² : CommRing A
inst✝¹ : TopologicalSpace A
inst✝ : TopologicalRing A
⊢ IsAdic ⊥ ↔ DiscreteTopology A

Next tactic:
rw [isAdic_iff]
theorem is_bot_adic_iff {A : Type*} [CommRing A] [TopologicalSpace A] [TopologicalRing A] :
    IsAdic (⊥ : Ideal A) ↔ DiscreteTopology A := by
  rw [isAdic_iff]
  

Proof state:
R : Type u_1
inst✝⁵ : CommRing R
inst✝⁴ : TopologicalSpace R
inst✝³ : TopologicalRing R
A : Type u_2
inst✝² : CommRing A
inst✝¹ : TopologicalSpace A
inst✝ : TopologicalRing A
⊢ ((∀ (n : ℕ), IsOpen ↑(⊥ ^ n)) ∧ ∀ s ∈ 𝓝 0, ∃ n, ↑(⊥ ^ n) ⊆ s) ↔ DiscreteTopology A

Next tactic:
constructor