Adopt lemma as the default keyword

Convert every theorem to lemma (mathlib's default) except the headline results a
reader of each module seeks out: analyze_correct (Forward/Sign/Constant),
aFix_eq/aFix_le (Fixedpoint), trace (Language), and Stmt.cfg_sufficient
(Language/Properties). lemma and theorem are interchangeable keywords, so no
references change.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
2026-06-25 13:59:08 -05:00
parent 5c9c8ac55c
commit e2df847139
20 changed files with 143 additions and 143 deletions

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@@ -41,10 +41,10 @@ def map (f : α → β) (g : GGraph α) : GGraph β where
inputs := g.inputs
outputs := g.outputs
@[simp] theorem map_size (f : α β) (g : GGraph α) : (g.map f).size = g.size := rfl
@[simp] theorem map_edges (f : α β) (g : GGraph α) : (g.map f).edges = g.edges := rfl
@[simp] theorem map_inputs (f : α β) (g : GGraph α) : (g.map f).inputs = g.inputs := rfl
@[simp] theorem map_outputs (f : α β) (g : GGraph α) : (g.map f).outputs = g.outputs := rfl
@[simp] lemma map_size (f : α β) (g : GGraph α) : (g.map f).size = g.size := rfl
@[simp] lemma map_edges (f : α β) (g : GGraph α) : (g.map f).edges = g.edges := rfl
@[simp] lemma map_inputs (f : α β) (g : GGraph α) : (g.map f).inputs = g.inputs := rfl
@[simp] lemma map_outputs (f : α β) (g : GGraph α) : (g.map f).outputs = g.outputs := rfl
def comp (g₁ g₂ : GGraph α) : GGraph α where
size := g₁.size + g₂.size
@@ -79,9 +79,9 @@ def loop (g : GGraph (List β)) : GGraph (List β) where
inputs := [g.loopIn]
outputs := [g.loopOut]
@[simp] theorem loop_inputs (g : GGraph (List β)) : (loop g).inputs = [g.loopIn] := rfl
@[simp] lemma loop_inputs (g : GGraph (List β)) : (loop g).inputs = [g.loopIn] := rfl
@[simp] theorem loop_outputs (g : GGraph (List β)) : (loop g).outputs = [g.loopOut] := rfl
@[simp] lemma loop_outputs (g : GGraph (List β)) : (loop g).outputs = [g.loopOut] := rfl
def skipto (g₁ g₂ : GGraph α) : GGraph α where
size := g₁.size + g₂.size
@@ -101,10 +101,10 @@ def singleton (a : α) : GGraph α where
def wrap (g : GGraph (List β)) : GGraph (List β) :=
singleton [] g singleton []
@[simp] theorem map_singleton (f : α β) (a : α) :
@[simp] lemma map_singleton (f : α β) (a : α) :
(singleton a).map f = singleton (f a) := rfl
@[simp] theorem map_comp (f : α β) (g₁ g₂ : GGraph α) :
@[simp] lemma map_comp (f : α β) (g₁ g₂ : GGraph α) :
(g₁ g₂).map f = g₁.map f g₂.map f := by
rcases g₁ with n₁, nd₁, e₁, i₁, o₁; rcases g₂ with n₂, nd₂, e₂, i₂, o₂
simp only [GGraph.map, GGraph.comp]
@@ -112,7 +112,7 @@ def wrap (g : GGraph (List β)) : GGraph (List β) :=
funext i
refine Fin.addCases ?_ ?_ i <;> intro j <;> simp [Fin.append_left, Fin.append_right]
@[simp] theorem map_link (f : α β) (g₁ g₂ : GGraph α) :
@[simp] lemma map_link (f : α β) (g₁ g₂ : GGraph α) :
(g₁ g₂).map f = g₁.map f g₂.map f := by
rcases g₁ with n₁, nd₁, e₁, i₁, o₁; rcases g₂ with n₂, nd₂, e₂, i₂, o₂
simp only [GGraph.map, GGraph.link]
@@ -120,7 +120,7 @@ def wrap (g : GGraph (List β)) : GGraph (List β) :=
funext i
refine Fin.addCases ?_ ?_ i <;> intro j <;> simp [Fin.append_left, Fin.append_right]
@[simp] theorem map_loop (h : β γ) (g : GGraph (List β)) :
@[simp] lemma map_loop (h : β γ) (g : GGraph (List β)) :
(loop g).map (List.map h) = loop (g.map (List.map h)) := by
rcases g with n, nd, e, i, o
simp only [GGraph.map, GGraph.loop]
@@ -128,7 +128,7 @@ def wrap (g : GGraph (List β)) : GGraph (List β) :=
funext i
refine Fin.addCases ?_ ?_ i <;> intro j <;> simp [Fin.append_left, Fin.append_right]
@[simp] theorem map_wrap (h : β γ) (g : GGraph (List β)) :
@[simp] lemma map_wrap (h : β γ) (g : GGraph (List β)) :
(wrap g).map (List.map h) = wrap (g.map (List.map h)) := by
simp [GGraph.wrap, GGraph.map_link, GGraph.map_singleton]
@@ -136,20 +136,20 @@ variable (g : GGraph α)
def indices : List g.Index := List.finRange g.size
theorem mem_indices (idx : g.Index) : idx g.indices :=
lemma mem_indices (idx : g.Index) : idx g.indices :=
List.mem_finRange idx
theorem nodup_indices : g.indices.Nodup :=
lemma nodup_indices : g.indices.Nodup :=
List.nodup_finRange g.size
def predecessors (idx : g.Index) : List g.Index :=
g.indices.filter (fun idx' => (idx', idx) g.edges)
theorem mem_predecessors_of_edge {idx₁ idx₂ : g.Index}
lemma mem_predecessors_of_edge {idx₁ idx₂ : g.Index}
(h : (idx₁, idx₂) g.edges) : idx₁ g.predecessors idx₂ :=
List.mem_filter.mpr g.mem_indices idx₁, by simpa using h
theorem edge_of_mem_predecessors {idx₁ idx₂ : g.Index}
lemma edge_of_mem_predecessors {idx₁ idx₂ : g.Index}
(h : idx₁ g.predecessors idx₂) : (idx₁, idx₂) g.edges := by
simpa using (List.mem_filter.mp h).2

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@@ -4,7 +4,7 @@ namespace Spa
open Graph
theorem Fin.castAdd_ne_natAdd {n m : } (i : Fin n) (j : Fin m) :
lemma Fin.castAdd_ne_natAdd {n m : } (i : Fin n) (j : Fin m) :
Fin.castAdd m i Fin.natAdd n j := by
intro h
have := congrArg Fin.val h
@@ -17,7 +17,7 @@ section Embeddings
variable {g₁ g₂ : Graph} {ρ₁ ρ₂ : Env}
theorem Trace.comp_left {idx₁ idx₂ : g₁.Index}
lemma Trace.comp_left {idx₁ idx₂ : g₁.Index}
(tr : Trace g₁ idx₁ idx₂ ρ₁ ρ₂) :
Trace (g₁ g₂) (idx₁.castAdd g₂.size) (idx₂.castAdd g₂.size) ρ₁ ρ₂ := by
induction tr with
@@ -29,7 +29,7 @@ theorem Trace.comp_left {idx₁ idx₂ : g₁.Index}
· rwa [show (g₁ g₂).nodes = Fin.append g₁.nodes g₂.nodes from rfl, Fin.append_left]
· exact List.mem_append_left _ (List.mem_map_of_mem _ he)
theorem Trace.comp_right {idx₁ idx₂ : g₂.Index}
lemma Trace.comp_right {idx₁ idx₂ : g₂.Index}
(tr : Trace g₂ idx₁ idx₂ ρ₁ ρ₂) :
Trace (g₁ g₂) (idx₁.natAdd g₁.size) (idx₂.natAdd g₁.size) ρ₁ ρ₂ := by
induction tr with
@@ -41,7 +41,7 @@ theorem Trace.comp_right {idx₁ idx₂ : g₂.Index}
· rwa [show (g₁ g₂).nodes = Fin.append g₁.nodes g₂.nodes from rfl, Fin.append_right]
· exact List.mem_append_right _ (List.mem_map_of_mem _ he)
theorem Trace.link_left {idx₁ idx₂ : g₁.Index}
lemma Trace.link_left {idx₁ idx₂ : g₁.Index}
(tr : Trace g₁ idx₁ idx₂ ρ₁ ρ₂) :
Trace (g₁ g₂) (idx₁.castAdd g₂.size) (idx₂.castAdd g₂.size) ρ₁ ρ₂ := by
induction tr with
@@ -53,7 +53,7 @@ theorem Trace.link_left {idx₁ idx₂ : g₁.Index}
· rwa [show (g₁ g₂).nodes = Fin.append g₁.nodes g₂.nodes from rfl, Fin.append_left]
· exact List.mem_append_left _ (List.mem_append_left _ (List.mem_map_of_mem _ he))
theorem Trace.link_right {idx₁ idx₂ : g₂.Index}
lemma Trace.link_right {idx₁ idx₂ : g₂.Index}
(tr : Trace g₂ idx₁ idx₂ ρ₁ ρ₂) :
Trace (g₁ g₂) (idx₁.natAdd g₁.size) (idx₂.natAdd g₁.size) ρ₁ ρ₂ := by
induction tr with
@@ -66,21 +66,21 @@ theorem Trace.link_right {idx₁ idx₂ : g₂.Index}
· exact List.mem_append_left _
(List.mem_append_right _ (List.mem_map_of_mem _ he))
theorem EndToEndTrace.comp_left (etr : EndToEndTrace g₁ ρ₁ ρ₂) :
lemma EndToEndTrace.comp_left (etr : EndToEndTrace g₁ ρ₁ ρ₂) :
EndToEndTrace (g₁ g₂) ρ₁ ρ₂ := by
obtain i₁, h₁, i₂, h₂, tr := etr
exact i₁.castAdd g₂.size, List.mem_append_left _ (List.mem_map_of_mem _ h₁),
i₂.castAdd g₂.size, List.mem_append_left _ (List.mem_map_of_mem _ h₂),
tr.comp_left
theorem EndToEndTrace.comp_right (etr : EndToEndTrace g₂ ρ₁ ρ₂) :
lemma EndToEndTrace.comp_right (etr : EndToEndTrace g₂ ρ₁ ρ₂) :
EndToEndTrace (g₁ g₂) ρ₁ ρ₂ := by
obtain i₁, h₁, i₂, h₂, tr := etr
exact i₁.natAdd g₁.size, List.mem_append_right _ (List.mem_map_of_mem _ h₁),
i₂.natAdd g₁.size, List.mem_append_right _ (List.mem_map_of_mem _ h₂),
tr.comp_right
theorem EndToEndTrace.concat {ρ₃ : Env} (etr₁ : EndToEndTrace g₁ ρ₁ ρ₂)
lemma EndToEndTrace.concat {ρ₃ : Env} (etr₁ : EndToEndTrace g₁ ρ₁ ρ₂)
(etr₂ : EndToEndTrace g₂ ρ₂ ρ₃) : EndToEndTrace (g₁ g₂) ρ₁ ρ₃ := by
obtain i₁, h₁, i₂, h₂, tr₁ := etr₁
obtain j₁, k₁, j₂, k₂, tr₂ := etr₂
@@ -98,7 +98,7 @@ section Loop
variable {g : Graph} {ρ₁ ρ₂ ρ₃ : Env}
theorem Trace.loop {idx₁ idx₂ : g.Index} (tr : Trace g idx₁ idx₂ ρ₁ ρ₂) :
lemma Trace.loop {idx₁ idx₂ : g.Index} (tr : Trace g idx₁ idx₂ ρ₁ ρ₂) :
Trace (Graph.loop g) (idx₁.natAdd 2) (idx₂.natAdd 2) ρ₁ ρ₂ := by
induction tr with
| single hbs =>
@@ -112,15 +112,15 @@ theorem Trace.loop {idx₁ idx₂ : g.Index} (tr : Trace g idx₁ idx₂ ρ₁
· exact List.mem_append_left _ (List.mem_append_left _
(List.mem_append_left _ (List.mem_map_of_mem _ he)))
private theorem loop_nodes_at_in :
private lemma loop_nodes_at_in :
(Graph.loop g).nodes g.loopIn = [] :=
Fin.append_left (fun _ : Fin 2 => []) g.nodes 0
private theorem loop_nodes_at_out :
private lemma loop_nodes_at_out :
(Graph.loop g).nodes g.loopOut = [] :=
Fin.append_left (fun _ : Fin 2 => []) g.nodes 1
theorem EndToEndTrace.loop (etr : EndToEndTrace g ρ₁ ρ₂) :
lemma EndToEndTrace.loop (etr : EndToEndTrace g ρ₁ ρ₂) :
EndToEndTrace (Graph.loop g) ρ₁ ρ₂ := by
obtain i₁, h₁, i₂, h₂, tr := etr
-- the edge in → (2 ↑ʳ i₁), reached through the second edge group
@@ -135,12 +135,12 @@ theorem EndToEndTrace.loop (etr : EndToEndTrace g ρ₁ ρ₂) :
exact Trace.concat (Trace.single (loop_nodes_at_in EvalBasicStmts.nil)) hin
(Trace.concat tr.loop hout (Trace.single (loop_nodes_at_out EvalBasicStmts.nil)))
private theorem loop_edge_out_in :
private lemma loop_edge_out_in :
((g.loopOut, g.loopIn) : (Graph.loop g).Edge) (Graph.loop g).edges := by
refine List.mem_append_right _ ?_
exact List.mem_cons_self _ _
theorem EndToEndTrace.loop_concat (etr₁ : EndToEndTrace (Graph.loop g) ρ₁ ρ₂)
lemma EndToEndTrace.loop_concat (etr₁ : EndToEndTrace (Graph.loop g) ρ₁ ρ₂)
(etr₂ : EndToEndTrace (Graph.loop g) ρ₂ ρ₃) :
EndToEndTrace (Graph.loop g) ρ₁ ρ₃ := by
obtain i₁, h₁, i₂, h₂, tr₁ := etr₁
@@ -150,7 +150,7 @@ theorem EndToEndTrace.loop_concat (etr₁ : EndToEndTrace (Graph.loop g) ρ₁
exact g.loopIn, List.mem_singleton_self _, g.loopOut, List.mem_singleton_self _,
Trace.concat tr₁ loop_edge_out_in tr₂
theorem EndToEndTrace.loop_empty {ρ : Env} : EndToEndTrace (Graph.loop g) ρ ρ := by
lemma EndToEndTrace.loop_empty {ρ : Env} : EndToEndTrace (Graph.loop g) ρ ρ := by
have hedge : ((g.loopIn, g.loopOut) : (Graph.loop g).Edge) (Graph.loop g).edges :=
List.mem_append_right _ (List.mem_cons_of_mem _ (List.mem_cons_self _ _))
exact g.loopIn, List.mem_singleton_self _, g.loopOut, List.mem_singleton_self _,
@@ -161,16 +161,16 @@ end Loop
/-! ### Singletons, wrap, and the main result -/
theorem EndToEndTrace.singleton {bss : List BasicStmt} {ρ₁ ρ₂ : Env}
lemma EndToEndTrace.singleton {bss : List BasicStmt} {ρ₁ ρ₂ : Env}
(h : EvalBasicStmts ρ₁ bss ρ₂) : EndToEndTrace (Graph.singleton bss) ρ₁ ρ₂ :=
(0 : Fin 1), List.mem_singleton_self _, (0 : Fin 1), List.mem_singleton_self _,
Trace.single h
theorem EndToEndTrace.singleton_nil (ρ : Env) :
lemma EndToEndTrace.singleton_nil (ρ : Env) :
EndToEndTrace (Graph.singleton []) ρ ρ :=
EndToEndTrace.singleton EvalBasicStmts.nil
theorem EndToEndTrace.wrap {g : Graph} {ρ₁ ρ₂ : Env}
lemma EndToEndTrace.wrap {g : Graph} {ρ₁ ρ₂ : Env}
(etr : EndToEndTrace g ρ₁ ρ₂) : EndToEndTrace (Graph.wrap g) ρ₁ ρ₂ :=
(EndToEndTrace.singleton_nil ρ₁).concat (etr.concat (EndToEndTrace.singleton_nil ρ₂))
@@ -198,13 +198,13 @@ def Graph.wrapInput (g : Graph) : (Graph.wrap g).Index :=
def Graph.wrapOutput (g : Graph) : (Graph.wrap g).Index :=
Fin.natAdd 1 ((Fin.natAdd g.size (0 : Fin 1)))
theorem Graph.wrap_inputs (g : Graph) :
lemma Graph.wrap_inputs (g : Graph) :
(Graph.wrap g).inputs = [g.wrapInput] := rfl
theorem Graph.wrap_outputs (g : Graph) :
lemma Graph.wrap_outputs (g : Graph) :
(Graph.wrap g).outputs = [g.wrapOutput] := rfl
private theorem not_mem_edges_castAdd_link {g₂ : Graph} (i : Fin 1)
private lemma not_mem_edges_castAdd_link {g₂ : Graph} (i : Fin 1)
(idx : (Graph.singleton [] g₂).Index) :
((idx, i.castAdd g₂.size) : (Graph.singleton [] g₂).Edge)
(Graph.singleton [] g₂).edges := by
@@ -221,7 +221,7 @@ private theorem not_mem_edges_castAdd_link {g₂ : Graph} (i : Fin 1)
obtain j, -, heq := List.mem_map.mp hb
exact Fin.castAdd_ne_natAdd i j heq.symm
theorem Graph.wrap_predecessors_eq_nil (g : Graph) (idx : (Graph.wrap g).Index)
lemma Graph.wrap_predecessors_eq_nil (g : Graph) (idx : (Graph.wrap g).Index)
(h : idx (Graph.wrap g).inputs) :
(Graph.wrap g).predecessors idx = [] := by
rw [Graph.wrap_inputs, List.mem_singleton] at h

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@@ -10,7 +10,7 @@ inductive Trace (g : Graph) : g.Index → g.Index → Env → Env → Prop
EvalBasicStmts ρ₁ (g.nodes idx₁) ρ₂ (idx₁, idx₂) g.edges
Trace g idx₂ idx₃ ρ₂ ρ₃ Trace g idx₁ idx₃ ρ₁ ρ₃
theorem Trace.concat {g : Graph} {idx₁ idx₂ idx₃ idx₄ : g.Index}
lemma Trace.concat {g : Graph} {idx₁ idx₂ idx₃ idx₄ : g.Index}
{ρ₁ ρ₂ ρ₃ : Env} (tr₁ : Trace g idx₁ idx₂ ρ₁ ρ₂)
(he : (idx₂, idx₃) g.edges) (tr₂ : Trace g idx₃ idx₄ ρ₂ ρ₃) :
Trace g idx₁ idx₄ ρ₁ ρ₃ := by