A geometric approach is introduced to study permutation polynomials over a finite field. As an application, we prove that there are no permutation polynomials of degree 2l over a large finite field, ...

Although naturally occurring proteins form stable defined tertiary structures, it is well known that many proteins with non-natural sequences have unstructured conformations 1,2. This suggests that ...

The gold standard for identifying causal relationships is a randomized controlled experiment. In many applications in the social sciences and medicine, the researcher does not control the assignment ...