Contents: Vol. 36 (No. 1), pp. 1-40, 2021

  • Original Paper
    Close Relationship between Ratios of "Golden Ratio Group" and Those of "Square-Root-of-2 Ratio Group"
    Hiroaki Kimpara
    Forma, Vol. 36 (No. 1), pp. 1-14, 2021
    [Abstract] | [Full text] (PDF 1.6 MB)

  • Original Paper
    Proof of the Transversality for the Standard Map
    Yoshihiro Yamaguchi and Kiyotaka Tanikawa
    Forma, Vol. 36 (No. 1), pp. 15-24, 2021
    [Abstract] | [Full text] (PDF 2.3 MB) | [Attractive image Fig.1]

  • Letter
    Learning Visual Illusions as an Approach to Overcoming Child's Misconception about Mass and Shape
    Katsuhiro Goto and Shu Matsuura
    Forma, Vol. 36 (No. 1), pp. 25-29, 2021
    [Abstract] | [Full text] (PDF 250 KB)

  • Forum
    A Decomposition of the Collatz Tree
    Syuji Miyazaki
    Forma, Vol. 36 (No. 1), pp. 31-34, 2021
    [Abstract] | [Full text] (PDF 61 KB) | [Attractive image Fig.1]

  • Original Paper
    Anomalous Period-Doubling Bifurcation of the Elliptic Fixed Point in the Area-Preserving Maps
    Yoshihiro Yamaguchi and Kiyotaka Tanikawa
    Forma, Vol. 36 (No. 1), pp. 35-40, 2021
    [Abstract] | [Full text] (PDF 690 KB) | [Attractive image Fig.1]