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Free tools is a set of free options that are available to MathSciNet users.

Search MSC lets you search in 2-digit Subject classifications. These have been developed by the American Mathematical Society and are frequently used in mathematics. After selecting a classification you get all the publications about this subject.

Search MSC also lets you search by subclassification:

This gives the following result. By clicking on the red circled icon you get all the articles about this subject.

MathSciNet’s Help function describes **Collaboration Distance** as follows:

‘An interest in the ‘distance’ between people has been popularized in both the mathematical community (Erdös numbers) and the general public (*Six Degrees of Separation*). In mathematical terms, this can be thought of in terms of the *collaboration graph*: the graph with authors of mathematical papers as vertices and edges connecting authors who have been co-authors on at least one paper. The MathSciNet database provides an example of a relatively large collaboration graph. The distance between two authors is defined to be the length of the minimal path (if a path exists) between the two authors in the collaboration graph. A search returns one of the minimal paths from the first author to the second author. It displays each edge in the path: each co-authored paper. For each edge it is possible to find all the papers authored by each author, as well as all the papers co-authored by the two authors’.

Enter the names of the authors for whom you wish to know the collaboration distance and click **Search**. **Use Erdös ** is a reference to Paul Erdös (The **Erdős number**, named after the Hungarian mathematician Paul Erdős, is a way of describing the ‘collaboration distance’ in scientific articles between an author and Paul Erdős. Source: Wikipedia)

**In our example you see a collaboration Distance (4) between Joseph Steenbrink and Klaas Landsman, both working at Radboud University.**

In this screen you can select a period and see which journals have recently been added. Then click **Search**:

This gives you the following result:

To view the most recent publications on a subject, select a period under **Current Publications**, as well as the Classification or Code, Publication Type and Status:

This video tutorial presents all the Free tools options.