blog scratch schedule people pics rss comments login 5000 links derStandard science.orf.at Heise Newsticker Grundstorkschatz Urban Dictionary LEO Dictionary Universität Innsbruck StV Informatik StV Physik Google Scholar Wolfram Alpha arXiv e-Print archive Mathematicians Bio's Math. Genealogy Proj. This Week's Finds mathworld Project Euler TED Xah Lee LFHCfS mathTICs Freunde der Zahl Pi stromx Projekt