[seqfan] 3-dimensional arrays?

Felix Fröhlich felix.froe at gmail.com
Mon Aug 22 16:19:41 CEST 2016


is there a standard way to transform three-dimensional "cubic" arrays, say
A(n, k, h), into sequences? If so, how exactly is this done?

I understand such an array could be read by triangular "layers" or
"cross-sections" and each such layer could then be read by rows. Is there a
standard way to read such arrays "by triangular layer", like
two-dimensional square arrays are read by antidiagonals? Where does one
start and in which direction is such a layer read? And more importantly,
how is that expressed in a sequence so one understands how to obtain the
sequence from the array and vice-versa?

Best regards

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