Klein's bottle - Klein's bottle

Japanese: クラインの瓶 - クラインのびん(英語表記)Klein’s bottle
Klein's bottle - Klein's bottle
The Möbius strip obtained by twisting one end of a rectangular piece of paper 180 degrees and gluing it to the other end is a famous example of an unorientable surface, but it is a surface with a boundary. In order to create an unorientable surface without a boundary, F. Klein came up with the idea of ​​a surface in which two Möbius strips are glued together along their boundaries. This surface is called a Klein bottle (or tube). It can also be obtained by gluing one pair of opposite sides of a rectangle in the same direction and the other pair in the opposite direction (Figure).

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
長方形の紙の一方の端を180゜ねじってから他端にのり付けしたとき得られるメービウスの帯は,向きづけられない曲面として有名であるが,これは境界をもつ曲面である。そこで境界をもたない曲面で向きづけられない曲面を作るため,F.クラインは,二つのメービウスの帯をその境界に沿ってのり付けした曲面を考えた。この曲面をクラインの瓶(または管)という。これは,また,一つの長方形において1組の対辺を同じ向きに,他の組の対辺を逆の向きにのり付けすることによっても得られる(図)。

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

<<:  Klinefelter syndrome

>>:  Klein, Lawrence R.

Recommend

Chylomicron

…Plasma lipoproteins are classified into four fra...

Porte de Clignancourt (English spelling)

…An open-air market selling antiques and used clo...

Gumble, W.

...Shozo Motoki, who is considered the founder of...

Spring color plum blossoms - Spring color plum blossoms

This is a human interest book written by Tamenaga...

Red Peacock - Red Peacock

...General term for birds of the Polyplectron gen...

smṛti (English spelling) smrti

...Reflecting the supremacy of the Brahmins since...

Karaosmanoğlu Family - Karaosmanoğlu (English spelling)

A noble family (ayan) who ruled the Aegean coastal...

Bahā' al‐Din

1145‐1234 A biographer of the Ayyubid dynasty. Bor...

Nissen, G. (English spelling) NissenG

...It was invented based on the safety net of a t...

Melanitis

...A general term for insects belonging to the Me...

Liberation League (Japan)

...In 1952, a discrimination incident at Yoshiwa ...

entremes (English spelling)

…Later, many of them were based on myths and lege...

Phthalic anhydride (English spelling)

It is an acid anhydride and has a structure in wh...

Yoriki Uno - More

...A group of Yamato warriors in the Heian and ea...

Stone

〘noun〙① Placing a stone in a certain place. Also, ...