Math
Book about the classical isoperimetrical problem and related maximalization problems:
An interesting optimization problem family - Isoperimetric problems (Problems - Solutions)
Download Sample Book - English Version (PDF, Updated at Apr 27, 2013)
English version of the book: 
- Hungarian version of the book:
iPhone - iPad
Apple - Macintosh
Here are interesting information and articles about Apple Macintosh computers, Mac OS X operating system and related things, that are important in my life and work.The Xcode chapter contains hungarian translation of BecomeAnXcoder. BecomeAnXcoder Learn C. Learn C Learn Objective-C. Learn Objective-C
Blog
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Hungarians
Meet Famous Hungarians and Hungarian-born persons who affected and shaped the world:
Mix
Finally find here a mix about collection of informative, interesting, exciting, surprising topics …