With justice and health in the balance, modern forensic toxicology drug testing labs are expected to detect and quantify a wide range of drugs and metabolites, from Fentanyl to novel psychoactive ...

We construct a 2-parameter family of complex Hadamard matrices of order 6 by a natural block construction. We combine this family with an earlier result of Zauner to derive a 2-parameter family of ...

Complex numbers are numbers that consist of two parts — a real number and an imaginary number. Complex numbers are the building blocks of more intricate math, such as algebra. They can be applied to ...

This is a preview. Log in through your library . Abstract David R. Richman proved that for n ≥ k ≥ 2 every integral n × n matrix is a sum of seven k-th powers. In this paper, in light of a question ...

Following our successful biennial series on the Analysis of Complex Environmental Matrices, the RSC Environmental Chemistry Group, the Separation Science Group and Water Research Forum are happy to ...

Mathematicians were disturbed, centuries ago, to find that calculating the properties of certain curves demanded the seemingly impossible: numbers that, when multiplied by themselves, turn negative.