Figure 5.

Tensor reindexation.

(a) To each 2 d index ( m,n), a new 1 d index k is associated by scanning sequentially the anti-diagonal lines. ( b) The re-indexation transforms the tensorial equation (8) into a normal linear system <a onClick="popup('http://www.biomedcentral.com/1471-2148/12/61/mathml/M97','MathML',630,470);return false;" target="_blank" href="http://www.biomedcentral.com/1471-2148/12/61/mathml/M97">View MathML</a>, where πk are the unknowns.

Houchmandzadeh and Vallade BMC Evolutionary Biology 2012 12:61   doi:10.1186/1471-2148-12-61
Download authors' original image