Today I've been playing with the induced subgraphs of the Clebsch graph. Several other interesting and well-known graphs can be obtained from it by deleting a small number of vertices and forming the induced subgraph of the remaining vertices.
To begin with, one simple construction of the Clebsch graph is to take all length-four binary strings as vertices, and to make two strings neighbors when they differ either by a single bit or by all four bits. So it has sixteen vertices and 40 edges, and
“Forget stardust—you are iron. Your blood is nothing but ferrous liquid. When you bleed, you reek of rust. It is iron that fills your heart and sits in your veins. And what is iron, really, unless it’s forged?
You are iron. And you are strong.” - n.t. (via thelittle-hobbit)
We live in a rusty universe. Oxygenated heme is the color of life, the color of passion, the reason we see red of as ripe and warm, the reason we see it as dangerous and frightening. Blood, breath
Image Credit: 3 News NZ New Zealand anti-fluoride activists (and their industry backers) suffered a signficant blow with the release of a High Court Judgement on Friday. This Judgement found that all the arguments used by New Health NZ attempting … Continue reading →
We came to the end of this week and it is our time to recount the most exciting and incredible stories from the world of science and technology. As usual, we had to make a hard decisions and after a [...]testThe post Weekly Science Picks appeared first on Australian Science.
After searching hundreds of millions of objects across our sky, NASA’s Wide-Field Infrared Survey Explorer (WISE) has turned up no evidence of the hypothesized celestial body in our solar system commonly dubbed “Planet X.” Researchers previously had theorized about the existence of this large, but unseen celestial body, suspected to lie somewhere beyond the orbit …