Artichoke Artichoke The globe artichoke ("Cynara cardunculus" var. "scolymus") is a variety of a species of thistle cultivated as a food. The edible portion of the plant consists of the flower buds before the flowers come into bloom. The budding artichoke flower-head is a cluster of many budding small flowers (an inflorescence), together with many bracts, on an edible base. Once the buds bloom, the structure changes to a coarse, barely edible form. Another variety of the same species is the cardoon, a perennial plant native to the Mediterranean region. Both wild forms and cultivated varieties (cultivars) exist. This vegetable grows
Complete variety of the valuative criterion of properness, which goes back to Claude Chevalley. Complete variety In mathematics, in particular in algebraic geometry, a complete algebraic variety is an algebraic variety "X", such that for any variety "Y" the projection morphism is a closed map, i.e. maps closed sets onto closed sets. This can be seen as an analogue of compactness in algebraic geometry: a topological space "X" is compact if and only if projection along "X" is a closed map in any product "X" × "Y", equipped with product topology. The image of a complete variety is closed and is a