Edible seaweed soaps, and lotions. Common edible seaweeds include: Edible seaweed Edible seaweed, or sea vegetables, are algae that can be eaten and used in the preparation of food. They typically contain high amounts of fiber. They may belong to one of several groups of multicellular algae: the red algae, green algae, and brown algae. Seaweeds are also harvested or cultivated for the extraction of polysaccharides such as alginate, agar and carrageenan, gelatinous substances collectively known as hydrocolloids or phycocolloids. Hydrocolloids have attained commercial significance, especially in food production as food additives. The food industry exploits the gelling, water-retention, emulsifying and other
Singular point of an algebraic variety Analysis of these singular points can be reduced to the algebraic variety case by considering the jets of the mapping. The "k"-th jet is the Taylor series of the mapping truncated at degree "k" and deleting the constant term. In classical algebraic geometry, certain special singular points were also called nodes. A node is a singular point where the Hessian matrix is non-singular; this implies that the singular point has multiplicity two and the tangent cone is not singular outside its vertex. Singular point of an algebraic variety In the mathematical field of algebraic geometry, a singular point of an