My draft, half-baked, not duly prepared notes

Untranslated (yet?) notes in Russian language marked with "RU" suffix in filename. Of course, these are in UTF-8 encoding.

.org-files - Emacs org-mode format.

I would be very grateful for (early) feedback on my notes. Please tell me about any bugs, mistakes, typos, etc. This is very important for me. My emails

 Name                    Last modified      Size  Description
 Parent Directory                             -   
 readme.html             2026-10-23 19:21  445   
 math/                   2026-10-23 19:20    -   
 cryptography/           2026-10-23 19:20    -   
 Vim/                    2026-10-23 19:20    -   
 Unix/                   2026-10-23 19:20    -   
 RevEng/                 2026-10-23 19:20    -   
 Levenshtein_distance/   2026-10-23 19:20    -   
 CS/                     2026-10-23 19:20    -