Sets poly ring caching to false for invariant theory (#3864)

src/InvariantTheory/affine_algebra.jl

@@ -142,7 +142,7 @@ function relations_primary_and_irreducible_secondary(RG::FinGroupInvarRing)
   np = length(p_invars)
 
   w = append!([total_degree(f) for f in p_invars], [total_degree(f) for f in is_invars])
-  S, t = graded_polynomial_ring(K, "t" => 1:(np + length(is_invars)), w)
+  S, t = graded_polynomial_ring(K, "t" => 1:(np + length(is_invars)), w; cached=false)
 
   if isempty(is_invars)
     I = ideal(S, elem_type(S)[])

src/InvariantTheory/fundamental_invariants.jl

@@ -141,7 +141,8 @@ function fundamental_invariants_via_king(RG::FinGroupInvarRing, beta::Int=0)
   invars_cache.invars = [inv(AbstractAlgebra.leading_coefficient(f)) * f for f in polys_ext]
   invars_cache.via_primary_and_secondary = false
   invars_cache.S = graded_polynomial_ring(
-    coefficient_ring(R), ["y$i" for i in 1:length(S)], [total_degree(f) for f in S]
+    coefficient_ring(R), ["y$i" for i in 1:length(S)], [total_degree(f) for f in S];
+    cached=false,
   )[1]
   return invars_cache
 end
@@ -174,7 +175,8 @@ function fundamental_invariants_via_primary_and_secondary(IR::FinGroupInvarRing)
     invars_cache.S = graded_polynomial_ring(
       K,
       ["y$i" for i in 1:length(invars_cache.invars)],
-      [total_degree(forget_grading(f)) for f in invars_cache.invars],
+      [total_degree(forget_grading(f)) for f in invars_cache.invars];
+      cached=false,
     )[1]
     invars_cache.toS = Dict{elem_type(R),elem_type(invars_cache.S)}(
       invars_cache.invars[i] => gen(invars_cache.S, i) for
@@ -202,7 +204,8 @@ function fundamental_invariants_via_primary_and_secondary(IR::FinGroupInvarRing)
   # Bookkeeping: we need to transform the relations in rels to the new ordering
   # (and potentially less variables)
   T, _ = graded_polynomial_ring(
-    K, ["y$i" for i in 1:length(res)], [total_degree(forget_grading(x)) for x in res]
+    K, ["y$i" for i in 1:length(res)], [total_degree(forget_grading(x)) for x in res];
+    cached=false,
   )
 
   invars_cache.invars = res