Janusz Kaczmarek
Dept of Logic, University of Łódź, Poland
Alfred Tarski: logic, mathematics and philosophy

Janusz Maciaszek
Dept of Logic, University of Łódź, Poland
Semantical theory of truth of Tarski

Michal Zawidzki
Dept of Logic, University of Łódź, Poland
Does P=NP? (and what does it mean)

Andrzej Indrzejczak
Dept of Logic, University of Łódź, Poland
Kurt Gödel's life with logic