Return to Question

Wonder whether any of you know where the following pearl of topology first appeared:

Prove that at any instant of time you can find three isothermal points on the surface of the Earth that correspond to the vertices of an equilateral triangle.

According to Léo Sauvé, all problems appeared once in the Monthly. Does that dictum apply to the above teaser, too?

Wonder whether any of you know where it was that the following pearl of topology first appeared:

Prove that at any instant of time you can find three isothermal points on the surface of the Earth that correspond to the vertices of an equilateral triangle.

According to Léo Sauvé, all problems appeared once in the Monthly. Does that dictum apply to the above teaser, too?

Wonder whether you know where the following pearl of Topology first appeared:

Prove that at any instant of time you can find three isothermal points on the surface of the Earth that correspond to the vertices of an equilateral triangle.

According to somebody, all problems appeared once in the Monthly. Does that dictum applies to the above teaser, too?

Wonder whether any of you know where the following pearl of topology first appeared:

Prove that at any instant of time you can find three isothermal points on the surface of the Earth that correspond to the vertices of an equilateral triangle.

According to Léo Sauvé, all problems appeared once in the Monthly. Does that dictum apply to the above teaser, too?

Wonder whether you know where the following pearl of Topology first appeared:

Prove that at any instant of time you can find three isothermal points on the surface of the Earth that correspond to the vertices of an equilateral triangle.

According to somebody, all problems appeared once in the Monthly. Does that dictum applies to the above teaser, too?

Wonder whether you know where the following pearl of Topology first appeared:

Prove that at any instant of time you can find three isothermal points on the surface of the Earth that correspond to the vertices of an equilateral triangle.

According to somebody, all problems appeared once in the Monthly. Does that dictum applies to the above teaser, too?