Tsatsomeros, M. J. (2000). Principal pivot transforms: properties and applications. Linear Algebra and its Applications, 307 (1-3), 151–165.
Sweeping a matrix rotates its graph,
https://terrytao.wordpress.com/2015/10/07/sweeping-a-matrix-rotates-its-graph/
Tsatsomeros, M. J. (2000). Principal pivot transforms: properties and applications. Linear Algebra and its Applications, 307 (1-3), 151–165.
Exceedingly Simple Principal Pivot Transforms http://deleeuwpdx.net/pubfolders/pivot/pivot.pdf
Sweeping a matrix rotates its graph,
https://terrytao.wordpress.com/2015/10/07/sweeping-a-matrix-rotates-its-graph/
Exceedingly Simple Principal Pivot Transforms http://deleeuwpdx.net/pubfolders/pivot/pivot.pdf