Snippets_in_vim

1. Install texlive for working of latex in vim.

   sudo apt update

   sudo apt install texlive

2. Install vim

    sudo apt install vim

3. Install zathura

    sudo apt install zathura

4. Install :PlugInstall for Installing plugins to make snippets work

      curl -fLo ~/.vim/autoload/plug.vim --create-dirs \

      https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim

5. Now go to vimrc file which is a configuration file for the vim. Press i. Then write:

    call plug#begin('~/.vim/plugged')
    Plug 'lervag/vimtex'
    Plug 'sirver/ultisnips'
    Plug 'honza/vim-snippets'
    call plug#end()

    let g:UltiSnipsExpandTrigger = '<c-s>'
    let g:UltiSnipsJumpForwardTrigger = '<c-j>'
    let g:UltiSnipsJumpBackwardTrigger = '<c-k>'
    let g:UltiSnipsListSnippets='<c-x><c-s>'
    let g:UltiSnipsRemoveDuplicates=1
    let g:tex_flavor='latex'
    let g:vimtex_view_method='zathura'
    let g:vimtex_quickfix_mode=0
    set conceallevel=1
    let g:tex_conceal='abdmg'

Then press esc key and write :wq, then enter.

6. Then we need to install YCM which means YouCompleteMe:

    apt install build-essential cmake vim-nox python3-dev

    sudo mkdir -p /etc/apt/keyrings

    curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key | sudo gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg

    echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_current.x nodistro main" | sudo tee /etc/apt/sources.list.d/nodesource.list

    apt install mono-complete golang nodejs openjdk-17-jdk openjdk-17-jre npm

7. Open Vim Editor:

    vim

Then write

    :UltiSnipsEdit

Here you will edit or add snippets you want, maybe some default snippets will be present there.

8. Write a snippet for example:

    snippet sign "Signature"
    Yours sincerely,

    Gilles Castel
    endsnippet

Then press esc and write

    :wq

Then again go to vim and press i and write sign and press ctrl+s. You will find the rest has been written by itself.

9. Then to convert a file of vim into pdf, remember the latex file have extension of .tex, now open vim, press i and write:

   \documentclass{article}
   \usepackage{amsmath} % For better mathematical formatting

   \begin{document}

   Here is the integral:

   \[
   \int x \, dx
   \]

   \end{document}

Press esc and write:

   :wq filename.tex

Then to convert this file into pdf by writing:

   pdflatex filename.tex

Then to view it in pdf viewer named zathura write:

zathura filename.pdf

REMEMBER TO CHANGE THE FILE EXTENSION ON WRITING zathura AS .pdf NOT .tex

##Test yourself!

Use this code in vim and convert it into pdf and open it through pdf viewer, see it through zathura and share your experience!

\documentclass{article}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}

\begin{document}

\title{A Comprehensive Overview of Mathematical Concepts}
\author{Your Name}
\date{\today}
\maketitle

\section{Introduction}
Mathematics is a vast field that encompasses various areas of study. In this document, we will explore some fundamental mathematical concepts and their applications.

\section{Algebra}
Algebra involves the study of symbols and the rules for manipulating these symbols. 

\subsection{Basic Algebraic Operations}
Consider the following algebraic expression:
\begin{equation}
    a^2 + b^2 = c^2
\end{equation}
This is the Pythagorean theorem, which is a fundamental relation in Euclidean geometry.

\subsection{Polynomial Functions}
A polynomial function is an expression of the form:
\begin{equation}
    P(x) = a_n x^n + a_{n-1} x^{n-1} + \cdots + a_1 x + a_0
\end{equation}
where \(a_i\) are coefficients and \(n\) is a non-negative integer.

\section{Calculus}
Calculus is concerned with change and motion. It has two main branches: differential calculus and integral calculus.

\subsection{Differentiation}
The derivative of a function \(f(x)\) measures how \(f(x)\) changes as \(x\) changes. The derivative is denoted by \(f'(x)\) or \(\frac{df}{dx}\):
\begin{equation}
    \frac{d}{dx} \left( x^n \right) = n x^{n-1}
\end{equation}

\subsection{Integration}
The integral of a function \(f(x)\) represents the area under the curve of \(f(x)\):
\begin{equation}
    \int_a^b f(x) \, dx
\end{equation}

\section{Linear Algebra}
Linear algebra deals with vector spaces and linear mappings between these spaces.

\subsection{Vectors}
A vector in \(\mathbb{R}^n\) is represented as:
\begin{equation}
    \mathbf{v} = \begin{pmatrix}
        v_1 \\
        v_2 \\
        \vdots \\
        v_n
    \end{pmatrix}
\end{equation}

\subsection{Matrices}
A matrix is a rectangular array of numbers arranged in rows and columns:
\begin{equation}
    A = \begin{pmatrix}
        a_{11} & a_{12} \\
        a_{21} & a_{22}
    \end{pmatrix}
\end{equation}

\section{Conclusion}
Mathematics provides a framework for understanding and solving complex problems. This document has touched on some of the core areas of mathematics.

\end{document}