Prof. Matoušek [1] was arguably one of Europe's best dual scientists/textbook writers of his time. If you are a math/CS theory persond and you are interested in picking up a book of his, I recommend "Mathematics++: Selected Topics Beyond the Basic Courses" [2].
[1]: https://en.wikipedia.org/wiki/Ji%C5%99%C3%AD_Matou%C5%A1ek_(...
[2]: https://bookstore.ams.org/stml-75
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Also, can't help myself but mention (in good spirits) that this is a repost:
> 33 Miniatures: Mathematical and Algorithmic Applications of Linear Algebra [pdf] (cuni.cz)
> 2 points by NotOscarWilde on Dec 27, 2013 | past | web