The above-mentioned paper 1 contains errors that need to be corrected, which are listed below. The authors apologize to the readers for these errors. p. 236, line 6, "an equilateral n-gon" should be corrected to "a convex equilateral n-gon". p. 237, line 8 from bottom, "one of the n-gons" should be corrected to "one of the equilateral n-gons". p. 240, lines 14-15, "Hence by Lemma 2. 2, L contains a convex equilateral p-gon. By Lemma 2. 3, " should be corrected to "Hence by Lemma 2. 3, ( (L) ) contains a convex equilateral n-gon for every odd n p. By Lemma 2. 2, ". p. 240, line 10 from bottom, "By Theorem 1. 2, " should be corrected as follows: "Let v 1,. . . , v n be the edge-vectors of an equilateral n-gon contained in L. Suppose v 1,. . . , Since v 1 and v 2 are linearly independent, we have a -b = c -d = 0, and hence a + b + c + d is even, which contradicts that n is odd. Therefore, there exists t {3,. . . , n such that v t / v 1, v 2. Now L contains six distinct vectors v 1, v 2, v t of equal length with sum 0, and hence L contains a convex equilateral hexagon by Lemma 2. 1. Hence by Theorem 1. 2, ".
Iino et al. (Wed,) studied this question.