# Author Archives: Jas, the Physicist

## Joseph Liouville

Besides his academic achievements, he was very talented in organisational matters. Liouville founded the Journal de Mathématiques Pures et Appliquées which retainsContinue reading “Joseph Liouville”

Cerebral cortex Jahangir Moini, Pirouz Piran, in Functional and Clinical Neuroanatomy, 2020 Specialized language areas Language processing is very complicated and occurs in bothContinue reading

## Ask Metaphysics: Degenerate Bilinear Forms

## Is a rectangle prime?

## Cauchy’s Theorem Application?

## Linear Independence on a Set of Complex Vectors

## Coxeter Groups, Root Systems, Roots of Unity and Why Translational Symmerty and Angular Momentum

Icosahedral symmetry is not compatible with translational symmetry, so there are no associated crystallographic point groups or space groups. In mathematics, a root system is a configuration of vectors in a Euclidean space satisfying certainContinue reading “Coxeter Groups, Root Systems, Roots of Unity and Why Translational Symmerty and Angular Momentum”

## What are Quasicrystals, and What Makes Them Nobel-Worthy?

The 2011 Nobel Prize in chemistry was awarded on Wednesday to an Israeli scientist named Dan Shechtman who discovered aContinue reading “What are Quasicrystals, and What Makes Them Nobel-Worthy?”

## Dyson’s Crystal Math

This is an excerpt from F. Dyson, “Birds and Frogs”, Notices of the AMS (February 2009) 212–233 [a written version of his AMSContinue reading “Dyson’s Crystal Math”