Gradation
131Uralic languages — Family of more than 30 languages spoken by some 25 million people in central and northern Eurasia. A primary division is between the Finno Ugric languages, which account for most of the languages and speakers, and the Samoyedic languages. The… …
132Graded algebra — In mathematics, in particular abstract algebra, a graded algebra is an algebra over a field (or commutative ring) with an extra piece of structure, known as a gradation (or grading ). Graded rings A graded ring A is a ring that has a direct sum… …
