Bidiakis cube Bidiakis cube In the mathematical field of graph theory, the Bidiakis cube is a 3-regular graph with 12 vertices and 18 edges. The Bidiakis cube is a cubic Hamiltonian graph and can be defined by the LCF notation [-6,4,-4]. The Bidiakis cube can also be constructed from a cube by adding edges across the top and bottom faces which connect the centres of opposite sides of the faces. The two additional edges need to be perpendicular to each other. With this construction, the Bidiakis cube is a polyhedral graph, and can be realized as a convex polyhedron. Therefore, by Steinitz's
How Much Land Does a Man Need? How Much Land Does a Man Need? "How Much Land Does a Man Require?" (Russian: Много ли человеку земли нужно?, "Mnogo li cheloveku zemli nuzhno?") is an 1886 short story by Leo Tolstoy about a man who, in his lust for land, forfeits everything. The protagonist of the story is a peasant named Pahom, who overhears his wife and sister-in-law argue over the merits of town and peasant farm life. He thinks to himself "if I had plenty of land, I shouldn't fear the Devil himself!". Unbeknownst to him, Satan is present sitting behind the stove and listening. Satan abruptly