Edible seaweed 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 physical properties of these hydrocolloids. Most edible
Dimension of an algebraic variety the function "Groebner[HilbertDimension]," and in Macaulay2, this is the function "dim". The "real dimension" of a set of real points, typically a semialgebraic set, is the dimension of its Zariski closure. For a semialgebraic set , the real dimension is one of the following equal integers: For an algebraic set defined over the reals (that is defined by polynomials with real coefficients), it may occur that the real dimension of the set of its real points is smaller than its dimension as a semi algebraic set. For example, the algebraic surface of equation formula_23 is an algebraic variety of dimension