Explore the fourth installment of a lecture series on pointwise convergence problems in ergodic theory and analysis, presented by Mariusz Mirek from Rutgers University, USA. Delve into advanced mathematical concepts and their applications in this 38-minute talk hosted by the Banach Center. Gain insights into the latest developments and challenges in the field as Mirek continues to unravel the complexities of pointwise convergence in both ergodic theory and analysis.