Find here the material of the first three weeks of the lecture course. A fourth draft of the lecture notes from 2013 can be found here. Please notice that parts of the lecture will be considerably different from these notes (sometimes simpler), also the following three articles will play a major role in the exposition:
 Christa Cuchiero, Irene Klein, Josef Teichmann: A new perspective on the fundamental theorem of asset pricing for large financial markets, arXiv/1412.7562, TVP (Theory of Probability and Its Applications) 60 (4), 561-579, 2016.
 Christa Cuchiero, Josef Teichmann: A convergence result for the Emery topology and a variant of the proof of the fundamental theorem of asset pricing, arXiv/1406.5414, Finance and Stochastics, 19 (2015), volume 4.