In math, as in life, small choices can have big consequences. This is especially true in graph theory, a field that studies networks of objects and the connections between them. Here’s a little puzzle ...

We demonstrate the strength of a general discrete-time modeling framework in which model specification is reduced to the bare essentials. The approach is due to Kermack and McKendrick, dating from ...

Andy Ellis explains how data generated from a KNX system can be used in graphical form to provide greater insight into a system’s performance to benefit installers and clients. The article also ...

Serpentine barrens are among the most challenging settings for plant life. Representing a perfect storm of hazards, serpentines consist of broadly skewed elemental profiles, including abundant toxic ...

Electroencephalograms (EEG) are one of the most commonly used measures to study brain functioning at a macroscopic level. The structure of the EEG time series is composed of many neural rhythms ...

Rooted binary trees inferred from molecular sequence data provide information about the evolutionary history of populations and species. We introduce metrics on ranked tree shapes and ranked ...