Parent and child square - Oyako Houjin

Japanese: 親子方陣 - おやこほうじん
Parent and child square - Oyako Houjin

...In the case of a pentagon, as shown in Figure 1-a, a symmetric square is one in which the sums of the two squares symmetrical to the central square 13 (for example, 17+9, 3+23) all add up to the constant 26. As shown in Figure 1-b, a parent-child square is one in which the sums of the three outer squares and the opposing squares add up to the constant 26. As shown in Figure 1-c, a perfect square is one in which the pandiagonals parallel to the diagonal (for example, 14+16+23+5+7) all add up to the constant 65. ...

*Some of the terminology that refers to "Parent-Child Square" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…五方陣でいえば図1‐aのごとく中心格13に関して対称な2格の和(例えば17+9,3+23)がすべて定数26となるものを対称方陣という。図1‐bのごとく外側の中3格が相対する格との和が定数26となるものを親子方陣という。図1‐cのごとく対角線に平行な汎対角線(例えば14+16+23+5+7)がすべて定数65となるものを完全方陣という。…

※「親子方陣」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

<<:  Parent murder - Parent murder

>>:  Oyako-ni - For parents and children

Recommend

San-cai tu-hui (English: San-cai tu-hui)

A Chinese Ming Dynasty treatise written by Wang Qi...

MOS IC (English spelling)

...Fairchild, which developed planar technology f...

Hanzan ruins

A necropolis of the Neolithic Gansu Yangshao Cult...

Iwakawa

…The Shirasu Plateau, which slopes from the north...

Chinhae (English spelling)

A city on the southern coast of South Gyeongsang P...

Charles University

…The New Town (Nové Město) was established (1348)...

Kuroda Seiki

Western-style painter. He was the first to introd...

Colobus polykomos polykomos (English spelling) Colobuspolykomospolykomos

… [Kuroda Suehisa]. . . *Some of the terminology ...

Hellaakoski, A.

…Next came Koskenniemi, whose works were of a lig...

Production relations (English spelling)

The social relations that humans form with each ot...

Fujiwara no Toshihito

Year of birth: Year of birth and death unknown. A ...

City Municipal Law - Toshijichitaiho

A reform law on urban government enacted in the UK...

Kasadomaru Group

...Furthermore, in 1924, the United States enacte...

phyllosilicate

...This is the reason why cleavage parallel to th...

Matsudaira clan

The Matsudaira clan originated from Kamo District...