IPM Calendar 
Wednesday 19 February 2020   Today  
Events for day: Wednesday 19 February 2020    
  • Workshop
    Workshop on Complex Networks
  • School

    Farmanieh Conference Hall ...

               13:30 - 15:00     Weekly Seminar
    AI in the new generation of observations


    New generations of observations provide a huge amount of data, posing the big data problem, which makes scientists consider data science as an increasingly important player in almost all data-based projects. Anomaly/outlier detection is one challenging area in most of the observations as well as machine learning, especially for big data in high dimensions. An example of application is provided in astronomy by the LSST and SKA, the next-generation optical and radio telescopes which are expected to observe completely new types of celestial objects lurking in the torrent of data in the 100PB-10EB range.
    We have explored a general anomaly ...

               15:00 - 16:00     Weekly Seminar
    B-mode power spectrums of CMB via polarized Compton scattering


    Abstract: In this work, some evidences for existing an asymmetry in the density of left- and right-handed cosmic electrons (?L and ?R respectively) in universe motivated us to calculate the dominated contribution of this asymmetry in the generation of the B-mode power spectrum. In the standard cosmological scenario, Compton scattering in the presence of scalar matter perturbation cannot generate magnetic-like pattern in linear polarization C_lB^((S))= 0, while in the case of polarized Compton scattering C_lB^((S))??_L^2. By adding up the power spectrum of the B-mode generated by the polarized Compton scattering to power spectra
    produce ...

               15:30 - 17:30     Mathtematical Logic Weekly Seminar
    Logical Relations on Span Categories


    Given a category without a certain structure, we would like to construct a new category having that structure, in a universal manner . For a category C , the quotients of span category Span(C) provide us a good setting to construct new categories having the given structure of C. For a topos T , we construct new toposes that enjoy extra structures like booleanness, internal axiom of choice and etc. To do this, we study a kind of relations on span category Span(T) that we call them logical relations. Their quotient construction produce toposes with good properties. This is based on a joint project with M. Golshani. ...

               16:00 - 17:00     Monthly Colloquium
    Neuroscience: Yesterday, Today and Tomorrow


    Neuroscience: Yesterday, Today and Tomorrow