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-rw-r--r--m/McLachlan_BSSN.m1
1 files changed, 1 insertions, 0 deletions
diff --git a/m/McLachlan_BSSN.m b/m/McLachlan_BSSN.m
index 20ff871..a835560 100644
--- a/m/McLachlan_BSSN.m
+++ b/m/McLachlan_BSSN.m
@@ -37,6 +37,7 @@ derivatives =
PDstandardNth[i_,j_] -> StandardCenteredDifferenceOperator[1,fdOrder/2,i] *
StandardCenteredDifferenceOperator[1,fdOrder/2,j],
PDdissipationNth[i_] ->
+ (-1)^(fdOrder/2) *
spacing[i]^(fdOrder+1) / 2^(fdOrder+2) *
StandardCenteredDifferenceOperator[fdOrder+2,fdOrder/2+1,i],