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2. Sum of two cubes - Wikipedia

   en.wikipedia.org/wiki/Sum_of_two_cubes

   Cabtaxi numbers are numbers that can be expressed as a sum of two positive or negative integers or 0 cubes in n ways. The smallest cabtaxi number, after Cabtaxi (1), is 91, [5] expressed as: or. The smallest Cabtaxi number expressed in 3 different ways is 4104, [6] expressed as. , or.

3. Hexamine fuel tablet - Wikipedia

   en.wikipedia.org/wiki/Hexamine_fuel_tablet

   Esbit brand hexamine tablets. A hexamine fuel tablet (or heat tablet, Esbit) is a form of solid fuel in tablet form. The tablets burn smokelessly, have a high energy density, do not liquefy while burning and leave no ashes. Invented in Murrhardt, Germany, in 1936, the main component is hexamine, which was discovered by Aleksandr Butlerov in 1859.

4. 12 (number) - Wikipedia

   en.wikipedia.org/wiki/12_(number)

   12 (twelve) is the natural number following 11 and preceding 13. ... Regular cubes and octahedrons both have 12 edges, while regular icosahedrons have 12 vertices.

5. Infinity cube - Wikipedia

   en.wikipedia.org/wiki/Infinity_cube

   An Infinity cube made of dice being played with. An animation showing different moves and states of the Infinity cube ( click to animate) An Infinity cube is a kind of mechanical puzzle toy with mathematical principles. Its shape is similar to a 2×2 Rubik's cube. It can be opened and put back together from different directions, thus creating a ...

6. Hypercube - Wikipedia

   en.wikipedia.org/wiki/Hypercube

   In geometry, a hypercube is an n -dimensional analogue of a square ( n = 2) and a cube ( n = 3 ). It is a closed, compact, convex figure whose 1- skeleton consists of groups of opposite parallel line segments aligned in each of the space's dimensions, perpendicular to each other and of the same length. A unit hypercube's longest diagonal in n ...

7. Packing problems - Wikipedia

   en.wikipedia.org/wiki/Packing_problems

   Packing problems are a class of optimization problems in mathematics that involve attempting to pack objects together into containers. The goal is to either pack a single container as densely as possible or pack all objects using as few containers as possible. Many of these problems can be related to real-life packaging, storage and ...