Baumgarte–Shapiro–Shibata–Nakamura formulation (source code)

= Baumgarte–Shapiro–Shibata–Nakamura formulation
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The Baumgarte–Shapiro–Shibata–Nakamura formulation rewrites the Einstein evolution equations using a conformal spatial metric, conformal traceless extrinsic curvature, the trace $K$, and conformal connection functions.