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How social networks help job seekers and hirers alike

Lots of research has gone into the nexus of social networks in the labour market. Our question is: Do students benefit from the connectedness of their advisers in terms of first academic employment after graduate school?

Eigenvalues to the rescue

On a quiet afternoon, professor Meth is working in her office in Leiden on some tantalizing mathematics problems. Suddenly, someone knocking on her door nervously disrupts the silence.

How do you decide who is the most important?

Imagine you’re in a remote village and only have a limited number of vaccines to distribute to protect the community from a deadly virus, who do you vaccinate?

A difficult decision, but necessary. Assuming that the disease is just as deadly for everyone in the community, the best way to prevent deaths is to contain the spread of the virus.

How the popular become even more popular

Many networks, from technological to social networks, and from the world-wide web to collaboration networks, have a hub-like structure. Why is this the case, and why are they not much more homogeneous?

Mathematical rulers in Game of Thrones

The moment millions of fans have waited for is there: the finale of Game of Thrones. 75 characters in different parts of the world, fighting to be the ruler of the iron throne. But who is the mathematical ruler of the iron throne?

Network analysis of tax treaties

Large international companies often do not send their profits directly from one country to another. Instead, they send it via other countries, so-called conduit countries, to reduce the tax they pay. Which countries are the most important conduit countries?