OAI/Geometry/RCD/Heat/ScaledHeatBridgeSecondDerivative.lean

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Physical-time scaling of the exact heat-bridge second derivative

The heat time is lambda times the interpolation time, so the second variation retains the exact lambda-squared coefficient.

  1. theorem OAI.RegularPointCoordinates.kernelHeat_scaled_bridge_second_hasDerivAt line 19