IPM Calendar 
Friday 1 July 2022   Today  
Events for day: Wednesday 08 June 2022    
           14:00 - 15:00     Combinatorics and Computing Weekly Seminar
Permutation Codes and Their Applications


Permutation codes are considered to be used in many different applications such as flash memories, DNA storage and power-line communications. We briefly introduce rank modulation for storing data in flash memories. The first order errors in flash memories that uses rank modulation can be model by adjacent transpositions. The Kendall-tau distance between two permutations is defined as the minimum number of adjacent transpositions that is needed to transfer one permutation to the other one. In order to be able to correct one error of the first order type in flash memories, we need to encode data into permutation codes that have at least minimum ...

           15:30 - 17:30     Mathematical Logic Weekly Seminar
Spectra and Definability


Maximal almost disjoint families, maximal cofinitary groups and maximal independent families are among the combinatorial sets of reals, which are central to the study of the set theoretic properties of the real line. In this talk, we will discuss recent developments regarding the possible cardinalities of such extremal sets of reals, as well as their definability properties.

Zoom info:
Meeting ID: 863 8028 5511
Passcode: 362880 ...