covering

Directory

References

Images

covering of part of a plane with triangles

Discover

King Cobra snake in Malaysia. (reptile)

9 of the World’s Deadliest Snakes

The impeachment trial of Pres. Andrew Johnson, illustration from Frank Leslie's Illustrated Newspaper, March 28, 1868.

What If the President Is Impeached?

Stylish light blue jeans on wooden background, closeup of inset pocket

Why Do Jeans Have That Tiny Pocket?

Town of Sisimiut located on the coast of the Davis Strait on Kangerluarsunnguaq Bay, Greenland

The Largest Islands in the World

World Data Locator Map: Australia

Is Australia an Island?

Nativity Scene, Adoration of the Magi, Church of the Birth of the Virgin Mary, Montenegro

Why Is Christmas in December?

Coriander leaves, fresh green cilantro on wooden background, herbs

Why Does Cilantro Taste Like Soap to Some People?

covering

combinatorics

Learn about this topic in these articles:

combinatorial methods

In combinatorics: Packing and covering
It is easily seen that six equal circular disks may be placed around another disk of the same size so that the central one is touched by all the others but no two overlap (Figure 7) and that it is not possible to place…
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