As coined by Philip Wadler [1], the Expression Problem is a new name for an old problem. The goal is to define a datatype by cases, where one can add new cases to the datatype and new functions over ...

No GPU is completely immune to issues, and even the best graphics cards may sometimes be hit by problems. If you use a desktop PC or laptop for long enough, chances are you’re going to come across one ...

Boolean expressions and Boolean logic are widely used in mathematics, computer science, computer programming, and philosophy. These take their name from the 19 th century mathematician and logician ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

Harvey C. Mansfield ’53 is the Kenan Research Professor of Government at Harvard. The best instance of free speech I’ve observed at Harvard came long ago when I was an undergraduate. I attended a ...

Practical word problems are often considered one of the most complex parts of elementary school mathematics. They require students to understand the context of a math problem, identify what the ...

If you want to accentuate the importance of a problem, it seems sensible to explain how prevalent it is. Lots of people are at risk of Alzheimer’s disease. Lots of women carry a gene that makes them ...

Actin is the most abundant protein in the cytoplasm of eukaryotic cells and interacts with hundreds of proteins to perform essential functions, including cell motility and cytokinesis. Numerous ...

Abstract: This paper presents a new approach to the problem of multi-level Boolean minimization. Conventional two-level minimization methods are embedded in a process that makes extensive use of the ...