[DefaultMember("Item")] public class TriDiagonalMatrixF
This is based on the wikipedia article: http://en.wikipedia.org/wiki/Tridiagonal_matrix_algorithm
The entries in the matrix on a particular row are A[i], B[i], and C[i] where i is the row index. B is the main diagonal, and so for an NxN matrix B is length N and all elements are used. So for row 0, the first two values are B[0] and C[0]. And for row N-1, the last two values are A[N-1] and B[N-1]. That means that A[0] is not actually on the matrix and is therefore never used, and same with C[N-1].
System.Object
SciChart.Charting.Model.Filters.SplineInterpolationFilter.TriDiagonalMatrixF
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2