id: 06132026
dt: j
an: 2013a.00672
au: Trenkler, Götz; Trenkler, Dietrich
ti: The numerical range of the Luoshu is a piece of cake ‒ almost.
so: Coll. Math. J. 43, No. 5, 371-376 (2012).
py: 2012
pu: Mathematical Association of America (MAA), Washington, D.C.
la: EN
cc: H65 G75
ut: matrices; magic suares; Luoshu magic squares; numerical range
ci:
li: doi:10.4169/college.math.j.43.5.371
ab: Summary: The numerical range, easy to understand but often tedious to
compute, provides useful information about a matrix. Here we describe
the numerical range of a $3 \times 3$ magic square. Applying our
results to one of the most famous of those squares, the Luoshu, it
turns out that its numerical range is a piece of cake ‒ almost.
rv: