לוח שנה משולב

We start by introducing the problem of shift embeddability and recalling the theorem of Gutman, Qiao, and Tsukamoto, which gives a satisfying answer for actions of Z^d. For actions of arbitrary amenable groups, we define property URPC (which asks for the existence of certain tilings) and show how it is useful for the question at hand. We then describe how it can often be obtained from an a priori much weaker condition. Throughout the talk, we highlight the new ideas that were required to go beyond the case of Z^d.

We'll discuss a new technique for sequence modeling for prediction tasks with long range dependencies and fast inference/generation. At the heart of the method is a new formulation for state space models (SSMs) based on learning linear dynamical systems with the spectral filtering algorithm. 
This gives rise to a novel sequence prediction architecture we call a spectral state space model.  
Spectral state space models have two primary advantages. First, they have provable robustness properties as their performance depends on neither the spectrum of the underlying dynamics nor the dimensionality of the problem. Second, these models are constructed with fixed convolutional filters that do not require learning while still outperforming SSMs in both theory and practice.The resulting models are evaluated on synthetic dynamical systems and long-range prediction tasks of various modalities. These evaluations support the theoretical benefits of spectral filtering for tasks requiring very long range memory.

The talk will be self-contained, but here is a link to more information about spectral filtering. 

Let p be an odd prime and f(x)  a polynomial of degree at least 5 with complex coefficients and without repeated roots. Suppose that all the coefficients of f(x) lie in a subfield K such that: 

1)      K contains a primitive p-th root of unity

I will discuss some well-known and less-known papers of Turing, exemplify the scope of deep, prescient ideas he put forth, and mention follow-up work on these by the Theoretical CS community.

No special background will be assumed.

This talk tells my outlook on the development of electric-field-mediated-chemistry/biochemistry and predicts a vision of its future state.1 The talk discusses applications of oriented electric-fields (OEFs) to chemical and biochemical reactions e.g., Diels  Alder reactions, and reactions of the enzyme Cytochrome P450. As shall be demonstrated, the orientation of the OEF controls reaction-rate (acceleration/inhibition), chemo-selectivity, enantio-selectivity, and solvent effect. This will be followed by showing relevant experimental verifications of the impact of OEF on structure and reactivity.
Subsequently, the talk will outline other ways of generating OEFs, e.g. by use of; pH-switchable charges, ionic additives, water droplets, and so on. I shall further describe the application of static vs. oscillating OEFs to decompose peptide plaques (e.g., Amyloid Plaques in Alzheimer’s disease).
The second part of the talk consists of conceptual principles for understanding and predicting OEF effects, e.g., the “reaction-axis rule”, the capability of OEFs to act as tweezers that orient reactants and accelerate their reaction, etc. Finally, I shall discuss the prospects of up-scaling applications of various OEF-sources to Molar concentrations. The talk ends with the vision that, in the forthcoming years, OEF usage will change chemical education, if not also the art of making new molecules.