MathSciNet is a searchable index of Mathematical Reviews and Current Mathematical Publications from 1940 to the present. Mathematical Reviews provides timely reviews or summaries of articles and books that contain new contributions to mathematical research. Researchers can search publications by author, title, MSC Primary, or anywhere in the citation record. The MSC Primary is the unique Mathematical Subject Classification system which groups certain math topics together. Explore this classification system by selecting Free Tools from the navigation heading at the top of the page. Browse author profiles for links to publications and MR numbers. A Citations Search will list the top ranked cited articles by author, subject or year.