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Deprecated: Grav\Common\Grav::header(): Implicitly marking parameter $response as nullable is deprecated, the explicit nullable type must be used instead in /home/kostyrt/kostyrkalu/system/src/Grav/Common/Grav.php on line 525

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Deprecated: Grav\Common\Debugger::profile(): Implicitly marking parameter $message as nullable is deprecated, the explicit nullable type must be used instead in /home/kostyrt/kostyrkalu/system/src/Grav/Common/Debugger.php on line 547

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Personal site of Andreï Victorovitch Kostyrka

Greetings, visitor! This is the personal web site of Andreï V. Kostyrka, containing academic work, technical projects, and personal notes. One can find my research papers and teaching materials in the ‘Education’ section, open-source tools (mainly in R and LaTeX) in the ‘Programming’ section, poetry, prose, and typography guides in the ‘Literature’ section, music resources in the ‘Music’ section, and blog posts on topics ranging from programming to recipes in the ‘Blog’ section. The ‘Archive’ page serves as an information dump and is not maintained.

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Formerly hosted on kostyrka.ru and kostyrka.ru/blog (in 2012–2023).