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Topics: Mathematics

Simulated tides during the Late Silurian. Credit: Mattias Green/Bangor University

Large tides may have driven evolution of fish towards life on land

Big tidal ranges some 400 million years ago may have initiated the evolution of bony fish and land vertebrates. This theory is now supported by researchers in the UK and at Uppsala University who, for the first time, have used established mathematical models to simulate tides on Earth during this period. The study has been published in Proceedings of the Royal Society A.

Larger schooling fish found to have stronger attraction forces

In schooling fish, collective movement emerges as a result of multiple social interactions between individuals. In a new study led by researchers at Uppsala University, larger individuals have been found to display stronger attraction forces to one another than smaller individuals. Short range repulsion forces, on the other hand, are the same regardless of fish size.

An online game reveals something fishy about mathematical models

How can you tell if your mathematical model is good enough? In a new study, researchers from Uppsala University implemented a Turing test in the form of an online game (with over 1700 players) to assess how good their models were at reproducing collective motion of real fish schools. The results are published in Biology Letters.

Learning from ants how to build transportation networks

Using mathematical modeling and field data, researchers at the mathematics department at Uppsala University have found the basic rules that allow ants to build efficient and low cost transport networks without discarding robustness. The study is now published in the Royal Society journal Interface.

Understanding democracy and development traps using a data-driven approach

Why do some countries seem to develop quickly while others remain poor? This question is at the heart of the so-called poverty or development trap problem. Using mathematics on open data sets researchers now present new insights into this issue, and also suggest which countries can be expected to develop faster. The paper is published in the open access journal Big Data.

Follow the rules to school

The rules of school are simple: it is all about watching the kid nearest to you and making sure you do what they do. Researchers at the mathematics department at Uppsala University, together with biologists at Sydney University have shown that fish apply similar rules when travelling in small shoals.

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