public Matrix DirectSum( Matrix B )
declare @A sqx.Matrix = '1,3,2;2,3,1' declare @B sqx.Matrix = '1,6;0,1' print @A.DirectSum(@B).ToString() /* 1,3,2,0,0; 2,3,1,0,0; 0,0,0,1,6; 0,0,0,0,1*/
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