Minor improvements

.github/codecov.yml

@@ -0,0 +1,8 @@
+coverage:
+  status:
+    project:
+      default:   # default is the status check's name, not default settings
+        target: auto 
+        threshold: 5
+        flags: 
+          - unit

.github/workflows/documentation.yml

@@ -12,7 +12,7 @@ jobs:
     permissions:
       contents: write
       statuses: write
-    runs-on: self-hosted
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v2

docs/src/examples/cavity2d_scattering.jl

@@ -54,9 +54,9 @@ Q = Inti.Quadrature(Γ_msh; qorder)
 println("Number of quadrature points: ", length(Q))
 
 ## Setup the integral operators
-pde = Inti.Helmholtz(; dim = 2, k)
+op = Inti.Helmholtz(; dim = 2, k)
 S, D = Inti.single_double_layer(;
-    pde,
+    op
     target = Q,
     source = Q,
     correction = (method = :none,),
@@ -76,7 +76,7 @@ L = I / 2 + LinearMap(D) - im * k * LinearMap(S)
 σ = gmres(L, g; restart = 1000, maxiter = 400, abstol = 1e-4, verbose = true)
 
 ## Plot a heatmap of the solution
-𝒮, 𝒟 = Inti.single_double_layer_potential(; pde, source = Q)
+𝒮, 𝒟 = Inti.single_double_layer_potential(; op, source = Q)
 u = (x) -> 𝒟[σ](x) - im * k * 𝒮[σ](x)
 xx = yy = range(-2, 2; step = meshsize)
 colorrange = (-2, 2)

docs/src/examples/graded_mesh.jl

@@ -37,21 +37,21 @@ Q = Inti.Quadrature(msh; qorder = 3)
 ##
 
 ## Create integral operators
-pde = Inti.Helmholtz(; dim = 2, k)
+op = Inti.Helmholtz(; dim = 2, k)
 S, D = Inti.single_double_layer(;
-    pde,
+    op,
     target = Q,
     source = Q,
     compression = (method = :fmm, tol = 1e-6),
     correction = (method = :dim,),
 )
 L = I / 2 + D - im * k * S
 
-𝒮, 𝒟 = Inti.single_double_layer_potential(; pde, source = Q)
+𝒮, 𝒟 = Inti.single_double_layer_potential(; op, source = Q)
 
 ## Test with a source inside for validation
 if TEST
-    G = Inti.SingleLayerKernel(pde)
+    G = Inti.SingleLayerKernel(op)
     uₑ = x -> G(x, SVector(0.4, 0.4))
     rhs = map(q -> uₑ(q.coords), Q)
     σ = gmres(L, rhs; restart = 100, maxiter = 100, abstol = 1e-8, verbose = true)
@@ -76,7 +76,7 @@ if PLOT
     target = [SVector(x, y) for x in xx, y in yy]
 
     Spot, Dpot = Inti.single_double_layer(;
-        pde,
+        op,
         target = target,
         source = Q,
         compression = (method = :fmm, tol = 1e-4),

docs/src/examples/helmholtz_scattering.jl

@@ -197,9 +197,9 @@ abs(Inti.integrate(x -> 1, Q) - 2π)
 # discrete approximation to the integral operators ``\mathrm{S}`` and
 # ``\mathrm{D}`` as follows:
 
-pde = Inti.Helmholtz(; k, dim = 2)
+op = Inti.Helmholtz(; k, dim = 2)
 S, D = Inti.single_double_layer(;
-    pde,
+    op,
     target = Q,
     source = Q,
     compression = (method = :none,),
@@ -259,7 +259,7 @@ nothing #hide
 # Inti.single_double_layer_potential) to obtain the single- and double-layer
 # potentials, and then combine them as follows:
 
-𝒮, 𝒟 = Inti.single_double_layer_potential(; pde, source = Q)
+𝒮, 𝒟 = Inti.single_double_layer_potential(; op, source = Q)
 uₛ   = x -> 𝒟[σ](x) - im * k * 𝒮[σ](x)
 nothing #hide
 
@@ -338,7 +338,7 @@ msh = Inti.meshgen(Γ; meshsize)
 Γ_msh = view(msh, Γ)
 Q = Inti.Quadrature(Γ_msh; qorder)
 S, D = Inti.single_double_layer(;
-    pde,
+    op,
     target = Q,
     source = Q,
     compression = (method = :none,),
@@ -347,7 +347,7 @@ S, D = Inti.single_double_layer(;
 L = I / 2 + D - im * k * S
 rhs = map(q -> -uᵢ(q.coords), Q)
 σ = L \ rhs
-𝒮, 𝒟 = Inti.single_double_layer_potential(; pde, source = Q)
+𝒮, 𝒟 = Inti.single_double_layer_potential(; op, source = Q)
 uₛ = x -> 𝒟[σ](x) - im * k * 𝒮[σ](x)
 vals =
     map(pt -> Inti.isinside(pt, Q) ? NaN : real(uₛ(pt) + uᵢ(pt)), Iterators.product(xx, yy))
@@ -445,9 +445,9 @@ nothing #hide
 # Next we assemble the integral operators, indicating that we wish to compress
 # them using hierarchical matrices:
 using HMatrices
-pde = Inti.Helmholtz(; k, dim = 3)
+op = Inti.Helmholtz(; k, dim = 3)
 S, D = Inti.single_double_layer(;
-    pde,
+    op,
     target = Q,
     source = Q,
     compression = (method = :hmatrix, tol = 1e-4),
@@ -497,7 +497,7 @@ end
 
 # As before, let us represent the solution using `IntegralPotential`s:
 
-𝒮, 𝒟 = Inti.single_double_layer_potential(; pde, source = Q)
+𝒮, 𝒟 = Inti.single_double_layer_potential(; op, source = Q)
 uₛ = x -> 𝒟[σ](x) - im * k * 𝒮[σ](x)
 nothing #hide
 
@@ -550,7 +550,7 @@ end
 target = Inti.nodes(Σ_msh)
 
 S, D = Inti.single_double_layer(;
-    pde,
+    op,
     target,
     source = Q,
     compression = (method = :hmatrix, tol = 1e-4),

docs/src/examples/lippmann_schwinger.jl

@@ -86,12 +86,12 @@ dict = Dict(E => Q for E in Inti.element_types(Ωₕ))
 # ## Volume Integral Operators and Volume Integral Equations
 using FMMLIB2D
 
-pde = Inti.Helmholtz(; dim = 2, k = k₁)
+op = Inti.Helmholtz(; dim = 2, k = k₁)
 
 # With quadratures constructed on the volume, we can define a discrete approximation
 # to the volume integral operator ``\mathcal{V}`` using VDIM.
 V_d2d = Inti.volume_potential(;
-    pde,
+    op,
     target = Ωₕ_quad,
     source = Ωₕ_quad,
     compression = (method = :fmm, tol = 1e-7),
@@ -124,7 +124,7 @@ u, hist =
     gmres(L, rhs; log = true, abstol = 1e-7, verbose = false, restart = 200, maxiter = 200)
 @show hist
 
-𝒱 = Inti.IntegralPotential(Inti.SingleLayerKernel(pde), Ωₕ_quad)
+𝒱 = Inti.IntegralPotential(Inti.SingleLayerKernel(op), Ωₕ_quad)
 
 # The representation formula gives the solution in $\R^2 \setminus \Omega$:
 uˢ = (x) -> uⁱ(x) - k₁^2 * 𝒱[refr_map_d.*u](x)

docs/src/examples/poisson.jl

@@ -107,18 +107,18 @@ fₑ = (x) -> -8 * uₑ(x)
 # ## Boundary and integral operators
 using FMM2D
 
-pde = Inti.Laplace(; dim = 2)
+op = Inti.Laplace(; dim = 2)
 
 ## Boundary operators
 S_b2b, D_b2b = Inti.single_double_layer(;
-    pde,
+    op,
     target = Γₕ_quad,
     source = Γₕ_quad,
     compression = (method = :fmm, tol = 1e-12),
     correction = (method = :dim,),
 )
 S_b2d, D_b2d = Inti.single_double_layer(;
-    pde,
+    op,
     target = Ωₕ_quad,
     source = Γₕ_quad,
     compression = (method = :fmm, tol = 1e-12),
@@ -127,14 +127,14 @@ S_b2d, D_b2d = Inti.single_double_layer(;
 
 ## Volume potentials
 V_d2d = Inti.volume_potential(;
-    pde,
+    op,
     target = Ωₕ_quad,
     source = Ωₕ_quad,
     compression = (method = :fmm, tol = 1e-12),
     correction = (method = :dim, interpolation_order),
 )
 V_d2b = Inti.volume_potential(;
-    pde,
+    op,
     target = Γₕ_quad,
     source = Ωₕ_quad,
     compression = (method = :fmm, tol = 1e-12),

docs/src/examples/poisson.md

@@ -123,10 +123,10 @@ operator mapping to points on the boundary, i.e. operator:
 
 ```@example poisson
 using FMM2D #to accelerate the maps
-pde = Inti.Laplace(; dim = 2)
+op = Inti.Laplace(; dim = 2)
 # Newtonian potential mapping domain to boundary
 V_d2b = Inti.volume_potential(;
-    pde,
+    op,
     target = Γ_quad,
     source = Ω_quad,
     compression = (method = :fmm, tol = 1e-12),
@@ -144,7 +144,7 @@ equation:
 ```@example poisson
 # Single and double layer operators on Γ
 S_b2b, D_b2b = Inti.single_double_layer(;
-    pde,
+    op,
     target = Γ_quad,
     source = Γ_quad,
     compression = (method = :fmm, tol = 1e-12),
@@ -193,8 +193,8 @@ nothing # hide
 With the density function at hand, we can now reconstruct our approximate solution:
 
 ```@example poisson
-G  = Inti.SingleLayerKernel(pde)
-dG = Inti.DoubleLayerKernel(pde)
+G  = Inti.SingleLayerKernel(op)
+dG = Inti.DoubleLayerKernel(op)
 𝒱 = Inti.IntegralPotential(G, Ω_quad)
 𝒟 = Inti.IntegralPotential(dG, Γ_quad)
 u = (x) -> 𝒱[f](x) + 𝒟[σ](x)
@@ -223,7 +223,7 @@ solution ``u`` at all the quadrature nodes of ``\Omega``:
 
 ```@example poisson
 V_d2d = Inti.volume_potential(;
-    pde,
+    op,
     target = Ω_quad,
     source = Ω_quad,
     compression = (method = :fmm, tol = 1e-8),
@@ -236,7 +236,7 @@ our mesh nodes:
 
 ```@example poisson
 S_b2d, D_b2d = Inti.single_double_layer(;
-    pde,
+    op,
     target = Ω_quad,
     source = Γ_quad,
     compression = (method = :fmm, tol = 1e-8),

docs/src/examples/stokes_drag.jl

@@ -63,10 +63,10 @@ Q = Inti.Quadrature(Γ_msh; qorder = 2)
 @show length(Q)
 @show abs(Inti.integrate(x -> 1, Q) - 4π * R^2)
 
-## the pde and its integral kernels
-pde = Inti.Stokes(; dim = 3, μ)
-G   = Inti.SingleLayerKernel(pde)
-dG  = Inti.DoubleLayerKernel(pde)
+## the op and its integral kernels
+op = Inti.Stokes(; dim = 3, μ)
+G = Inti.SingleLayerKernel(op)
+dG = Inti.DoubleLayerKernel(op)
 
 ## choice of a integral representation
 T = SVector{3,Float64}
@@ -85,7 +85,7 @@ Smat = Inti.assemble_matrix(Sop)
 
 ## integral operators defined on the boundary
 S, D = Inti.single_double_layer(;
-    pde,
+    op,
     target = Q,
     source = Q,
     compression = (method = :none,),

docs/src/examples/transmission.jl

@@ -44,36 +44,36 @@ msh = Inti.import_mesh(name; dim = 2)
 
 Q = Inti.Quadrature(Γ_msh; qorder)
 
-pde₁ = Inti.Helmholtz(; k = k₁, dim = 2)
-pde₂ = Inti.Helmholtz(; k = k₂, dim = 2)
+op₁ = Inti.Helmholtz(; k = k₁, dim = 2)
+op₂ = Inti.Helmholtz(; k = k₂, dim = 2)
 
 using FMMLIB2D
 S₁, D₁ = Inti.single_double_layer(;
-    pde = pde₁,
+    op = op₁,
     target = Q,
     source = Q,
     compression = (method = :fmm, tol = :1e-8),
     correction = (method = :dim, maxdist = 5 * meshsize),
 )
 
 K₁, N₁ = Inti.adj_double_layer_hypersingular(;
-    pde = pde₁,
+    op = op₁,
     target = Q,
     source = Q,
     compression = (method = :fmm, tol = :1e-8),
     correction = (method = :dim, maxdist = 5 * meshsize),
 )
 
 S₂, D₂ = Inti.single_double_layer(;
-    pde = pde₂,
+    op = op₂,
     target = Q,
     source = Q,
     compression = (method = :fmm, tol = :1e-8),
     correction = (method = :dim, maxdist = 5 * meshsize),
 )
 
 K₂, N₂ = Inti.adj_double_layer_hypersingular(;
-    pde = pde₂,
+    op = op₂,
     target = Q,
     source = Q,
     compression = (method = :fmm, tol = :1e-8),
@@ -120,8 +120,8 @@ nQ = size(Q, 1)
 sol = reshape(sol, nQ, 2)
 φ, ψ = sol[:, 1], sol[:, 2]
 
-𝒮₁, 𝒟₁ = Inti.single_double_layer_potential(; pde = pde₁, source = Q)
-𝒮₂, 𝒟₂ = Inti.single_double_layer_potential(; pde = pde₂, source = Q)
+𝒮₁, 𝒟₁ = Inti.single_double_layer_potential(; op = op₁, source = Q)
+𝒮₂, 𝒟₂ = Inti.single_double_layer_potential(; op = op₂, source = Q)
 
 v₁ = x -> 𝒟₁[φ](x) - 𝒮₁[ψ](x)
 v₂ = x -> -𝒟₂[φ](x) + 𝒮₂[ψ](x)

docs/src/index.md

@@ -134,9 +134,9 @@ end
 msh = Inti.meshgen(Γ; meshsize = 0.1)
 Q = Inti.Quadrature(msh; qorder = 5)
 # create the integral operators
-pde = Inti.Laplace(;dim=2)
+op = Inti.Laplace(;dim=2)
 S, _ = Inti.single_double_layer(;
-    pde, 
+    op, 
     target = Q,
     source = Q,
     compression = (method = :none,),
@@ -148,7 +148,7 @@ g = map(q -> uₑ(q.coords), Q) # value at quad nodes
 # solve for σ
 σ = S \ g
 # use the single-layer potential to evaluate the solution
-𝒮, 𝒟 = Inti.single_double_layer_potential(; pde, source = Q)
+𝒮, 𝒟 = Inti.single_double_layer_potential(; op, source = Q)
 uₕ = x -> 𝒮[σ](x)
 ```