ERRATA : How Many Loops Kolam Loop Pattern Consists of [Forma, Vol. 30, pp. 9-18, 2015]

抄録

There are errors at the following paper:

"How Many Loops Kolam Loop Pattern Consists of" by Shojiro Nagata in Forma, Vol. 30, No. 1, pp. 9-18, 2015.

p. 17, right column, the lines 1, 2, and 3 from the bottom:

Sentences:

Note the rank of [mq2] is calculated using arithmetric modulo 2 as an example of ma = [[0,1,1][1,0,1][1,1,0]], mq2 = [[0,1,1][1,0,1][1,1,0]], the rank of mq2 = 2, and then the nullity (=3-2) means 1 loop of ma.

should be changed to:

Note the rank of [mq2] is calculated using arithmetic modulo 2 as an example of ma = [(0, 1, 1), (1, 0, 1), (1, 1, 0)], mq2 = [(0, 1, 1), (1, 0, 1), (1, 1, 0)] => (row reduced) [(1, 0, 1), (0, 1, 1), (0, 0, 0)]. The rank of mq2 = 2, and then the nullity (3 - 2 =1) means 1 loop of the medial graph of the planar graph representing the matrix ma.

p. 18, left column, the matrix mi in the middle:

should be changed to: