add citation to is_flat

JuliaManifolds · Nov 14, 2023 · 11b4031 · 11b4031
1 parent baa45a8
commit 11b4031
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diff --git a/src/manifolds/CholeskySpace.jl b/src/manifolds/CholeskySpace.jl
@@ -132,7 +132,7 @@ end
 """
     is_flat(::CholeskySpace)
 
-Return true. [`CholeskySpace`](@ref) is a flat manifold.
+Return true. [`CholeskySpace`](@ref) is a flat manifold. See Proposition 8 of [Lin:2019](@cite).
 """
 is_flat(M::CholeskySpace) = true
 

diff --git a/src/manifolds/SymmetricPositiveDefiniteLogCholesky.jl b/src/manifolds/SymmetricPositiveDefiniteLogCholesky.jl
@@ -100,7 +100,7 @@ end
     is_flat(::MetricManifold{ℝ,<:SymmetricPositiveDefinite,LogCholeskyMetric})
 
 Return true. [`SymmetricPositiveDefinite`](@ref) with [`LogCholeskyMetric`](@ref)
-is a flat manifold.
+is a flat manifold. See Proposition 8 of [Lin:2019](@cite).
 """
 is_flat(M::MetricManifold{ℝ,<:SymmetricPositiveDefinite,LogCholeskyMetric}) = true