Ошибки LaTeX

Содержание
Математические
Операторы отношений LaTeX
Греческий алфавит в LaTeX
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Инвертированные бинарные
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Введение

! missing $ inserted

Один из простейших вариантов получить такую ошибку - не поставить $ в конце формулы

$p = 36

А нужно

$p = 36$

Xaw

Sorry, you will need at least the Xaw header/library files to compile xdvik

Если вы в Debian/Ubuntu - выполните

sudo apt install libxaw7-dev

Xaw

Sorry, you will need at least the Xaw header/library files to compile xdvik

Если вы в Debian/Ubuntu - выполните

sudo apt install libxaw7-dev

Поддержка кириллицы

! Package babel Error: Unknown option `russian`

Возникает если указать

\usepackage[russian]{babel}

И не установить перед этим поддержку кириллицы

sudo apt install texlive-lang-cyrillic

[sudo] password for andrei: Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: linux-headers-5.11.0-43-generic linux-hwe-5.11-headers-5.11.0-43 linux-image-5.11.0-43-generic linux-modules-5.11.0-43-generic linux-modules-extra-5.11.0-43-generic Use 'sudo apt autoremove' to remove them. The following NEW packages will be installed: texlive-lang-cyrillic 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded. Need to get 20,9 MB of archives. After this operation, 41,4 MB of additional disk space will be used. Get:1 http://fi.archive.ubuntu.com/ubuntu focal/universe amd64 texlive-lang-cyrillic all 2019.20200218-1 [20,9 MB] Fetched 20,9 MB in 3s (7346 kB/s) Selecting previously unselected package texlive-lang-cyrillic. (Reading database ... 250077 files and directories currently installed.) Preparing to unpack .../texlive-lang-cyrillic_2019.20200218-1_all.deb ... Unpacking texlive-lang-cyrillic (2019.20200218-1) ... Setting up texlive-lang-cyrillic (2019.20200218-1) ... Processing triggers for tex-common (6.13) ... Running mktexlsr. This may take some time... done. Running updmap-sys. This may take some time... done. Running mktexlsr /var/lib/texmf ... done. Building latex-based formats --byhyphen language.dat. This may take some time... done. Building e-tex based formats --byhyphen language.def. This may take some time... done. Processing triggers for man-db (2.9.1-1) ...