Slides

I uploaded yesterday's slides (in a preliminary form). There might be more (or different) in the current chapter, as I am reordering and reworking them this year slightly.

Also the corresponding skript is under revision (or under polishing).

Soon, I will replace aslo the earlier slides/script with a polished version, sometimes there had been typos here and there, nothing critical, but still I erased them when spotting them during the semenster (only that I not uploaded a newly generated PDF each time).