Hardwoods, known as broadleafs, are trees classed as angiosperms with ovules enclosed for fruit protection. When appropriately watered on good fertile sites or fed in the landscape with a unique tree ...

Steve Nix is a member of the Society of American Foresters and a former forest resources analyst for the state of Alabama. According to National Wildlife Federation, there are two varieties of Douglas ...

Abstract: Graph isomorphism phenomenon has been identified since the 1930s, which was first addressed in the graph-theoretical field and was thoroughly studied as a critical topic of computer science.

These are all work in progress, but some of these packages might be useful for those who prefers Mathematica over Sage. This is a package for working with symmetric ...

From Estonia to Antarctica, this once-pagan symbol has taken on many strange forms. In December 1848, an illustration showed Queen Victoria, Prince Albert, and their children admiring a Christmas tree ...