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Two grease pencils Historical diplomatic usage The grease pencil , a wax writing tool also known as a wax pencil , china marker , or chinagraph pencil (especially in the United Kingdom ), is a writing implement made of hardened colored wax and is useful for marking on hard, glossy non-porous surfaces.
Using a black Royal Sovereign Chinagraph pencil I am exploring methods of blending, spreading, removing and fixing the black marks on paper, for artwork sketching and drawing. The black marks can be removed easily by washing in cold soapy water. That is not what would be expected from a wax, but is typical of an oil or grease I believe.
Force-directed graph drawing algorithms assign forces among the set of edges and the set of nodes of a graph drawing.Typically, spring-like attractive forces based on Hooke's law are used to attract pairs of endpoints of the graph's edges towards each other, while simultaneously repulsive forces like those of electrically charged particles based on Coulomb's law are used to separate all pairs ...
The Geometry Nodes utility also has the capability of creating primitive meshes. [36] In Blender 3.0, support for creating and modifying curves objects was added to Geometry Nodes; [37] in the same release, the Geometry Nodes workflow was completely redesigned with fields, in order to make the system more intuitive and work like shader nodes ...
Every elliptic curve is birationally equivalent to a curve of the Hesse pencil; this is the Hessian form of an elliptic curve. However, the parameters ( λ , μ {\displaystyle \lambda ,\mu } ) of the Hessian form may belong to an extension field of the field of definition of the original curve.
A crunode at the origin of the curve defined by (+) =. In mathematics, a crunode [1] (archaic; from Latin crux "cross" + node [2]) or node of an algebraic curve is a type of singular point at which the curve intersects itself so that both branches of the curve have distinct tangent lines at the point of intersection.
In graph theory, a star S k is the complete bipartite graph K 1,k : a tree with one internal node and k leaves (but no internal nodes and k + 1 leaves when k ≤ 1). Alternatively, some authors define S k to be the tree of order k with maximum diameter 2; in which case a star of k > 2 has k − 1 leaves. A star with 3 edges is called a claw.
Stability of residue curves in the vicinity of binary azeotropes. Pure components and azeotropic points are called nodes. Three different types are possible: Stable node: This is the pure component or the azeotropic point with the highest boiling temperature and lowest vapor pressure in a distillation region. All residue curves end at stable nodes.