Grades, status, and titles

Titles

This is not about knights and dames, nor is it about jazz musicians, such as Duke Ellington or Court Basie. Rather, it is about a most important issue in science, which is the difficult task of choosing titles for seminars, lectures, scientific papers, books and even the titles of the journals themselves. Today, we all have to compete for readers and listeners, and in the current ruthlessly com...

Paper Titles and Abstracts

Titles and Abstracts

In condensed matter physics, it is known that some topological properties of quantum systems are related to the topology of the Hamiltonian operator as a self-adjoint operator with a spectral gap. In particular, recent researches reveal that symmetries of quantum systems, such as time-reversal or particle-hole symmetries, provide a rich physical and mathematical theory. In this talk, we introdu...

Titles and Abstracts

The role of measurement in quantum theory remains both perplexing and controversial, especially for no-collapse interpretations (e.g., many-worlds, or the ``existential'' view). One of the outstanding challenges in these frameworks is to explain preferred bases -i.e., why measurements and observations always break unitary invariance. In this talk, I'll present a framework, motivated by informat...

Titles and Abstracts

Instances of such “arithmetic 1-extensions” naturally arise in arithmetic geometry and in geometry of numbers. In this talk we discuss an arithmetic analog of the Enriques-Severi-Zariski Lemma in classical algebraic geometry: namely, if X is a projective integral scheme over SpecZ and if the class of EQ in the classical extension group Ext1XQ(EQ, FQ) does not vanish, then for “many” points P in...