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diff --git a/Mathematics/README.md b/Mathematics/README.md
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+++ b/Mathematics/README.md
diff --git a/dotfiles/arch/.vimrc b/dotfiles/arch/.vimrc
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+" My vimrc
+" Author:	    Steve Lee <me@xiangyangli.com>
+" Last change:	2017-11-05
+
+
+""""""""""""""""""""""""""""""""""""""""""""""""""""""
+" => Basic
+""""""""""""""""""""""""""""""""""""""""""""""""""""""
+
+" Don't try to be vi compatible
+set nocompatible
+
+" Show what you are typing as a command.
+set showcmd
+
+" number of lines
+set number
+
+" Hide GUI widget and color
+if has("gui_running")
+    set guioptions-=m  "remove menu bar
+    set guioptions-=T  "remove toolbar
+    set guioptions-=R
+    set guioptions-=L  "remove left-hand scroll bar
+    set t_Co=256
+    set guitablabel=%M\ %t
+    set guifont=Inconsolata\ 12
+    set guicursor+=a:blinkon0 "disable cursor bliking
+    autocmd GUIEnter * set vb t_vb= "disable bell
+endif
+
+" Make backspace behave in a sane manner
+set backspace=indent,eol,start
+
+" syntax on
+syntax on
+""""""""""""""""""""""""""""""""""""""""""""""""""""""
+" => Plugin using Vbundle
+""""""""""""""""""""""""""""""""""""""""""""""""""""""
+filetype off                  " required
+
+" set the runtime path to include Vundle and initialize
+set rtp+=~/.vim/bundle/Vundle.vim
+call vundle#begin()
+
+" let Vundle manage Vundle, required
+Plugin 'VundleVim/Vundle.vim'
+
+Plugin 'ctrlpvim/ctrlp.vim'
+Plugin 'scrooloose/nerdtree'
+Plugin 'scrooloose/nerdcommenter'
+Plugin 'vim-airline/vim-airline'
+Plugin 'vim-airline/vim-airline-themes'
+Plugin 'majutsushi/tagbar'
+" Plugin '2072/PHP-Indenting-for-VIm'
+Plugin 'maralla/completor.vim'
+Plugin 'stevecn/tslime.vim'
+Plugin 'vim-syntastic/syntastic'
+Plugin 'jiangmiao/auto-pairs'
+Plugin 'nathanaelkane/vim-indent-guides'
+" Plugin 'lvht/phpcd.vim'
+
+" Colorscheme
+Plugin 'chriskempson/base16-vim'
+call vundle#end()            " required
+
+" Enable file type detection and do language-dependent indenting
+filetype plugin indent on
+
+""""""""""""""""""""""""""""""""""""""""""""""""""""""
+" => End Plugin
+""""""""""""""""""""""""""""""""""""""""""""""""""""""
+
+""""""""""""""""""""""""""""""""""""""""""""""""""""""
+" => General
+""""""""""""""""""""""""""""""""""""""""""""""""""""""
+
+" Set encoding to utf8
+set encoding=utf8
+
+" Use spaces instead of tabs;
+" and Be smart when using tabs.
+set expandtab
+set smarttab
+
+" 1 tab == 4 spaces
+set shiftwidth=4
+set tabstop=4
+set softtabstop=4
+
+" Huge History
+set history=1000
+
+" Searching
+set ignorecase  " Ignore case when searching
+set smartcase   " smart about case when searching
+set hlsearch    " Highlight search results
+set showmatch   " Show matching brackets when text indicator is over them
+set cursorline  " highlight current line
+
+set colorcolumn=81
+
+" show tab line
+" set showtabline=2
+
+" mouse and hide the cursor
+set mouse=a
+set mousehide
+
+" Always show the status line
+if has('statusline')
+    set laststatus=2
+    " Broken down into easily includeable segments
+    set statusline=%<%f\                     " Filename
+    set statusline+=%w%h%m%r                 " Options
+    set statusline+=\ [%{&ff}/%Y]            " Filetype
+    set statusline+=\ [%{getcwd()}]          " Current dir
+    set statusline+=%=%-14.(%l,%c%V%)\ %p%%  " Right aligned file nav info
+endif
+
+""""""""""""""""""""""""""""""""""""""""""""""""""""""
+" => General key maping
+""""""""""""""""""""""""""""""""""""""""""""""""""""""
+
+" Leader key
+let mapleader = ';'
+
+inoremap jj <Esc>
+cmap suw w !sudo tee > /dev/null %
+
+" Trim tail write space
+noremap <leader>w :call TrimWhitespace()<CR>
+noremap <leader>s :w<CR>
+noremap <leader>c :call ComplieCurrentCProgram()<CR>
+autocmd BufWritePre * :call TrimWhitespace()
+
+" TODO some way to cancel some key press in the vim Like $mod + o in vim not
+" act in i3wm
+
+""""""""""""""""""""""""""""""""""""""""""""""""""""""
+" => Plugin config and key maping
+""""""""""""""""""""""""""""""""""""""""""""""""""""""
+" ctrlp.vim
+
+" NERDTree
+map <C-e> :NERDTreeToggle<CR>
+" NERDCommenter
+
+" Colorscheme and setting
+map <leader>ccl :colorscheme base16-tomorrow<CR>
+map <leader>ccn :colorscheme base16-atelier-seaside<CR>
+" colorscheme base16-google-dark
+" colorscheme base16-default-dark
+" colorscheme base16-github
+colorscheme base16-tomorrow-night
+hi LineNr guibg=bg
+hi vertsplit guifg=bg guibg=bg
+
+" Tagbar
+nnoremap <leader>tt :TagbarToggle<CR>
+nnoremap <leader>tj :TagbarOpen j<CR>
+
+" tslime
+let g:tslime_normal_mapping = '<leader>t'
+let g:tslime_visual_mapping = '<leader>t'
+let g:tslime_vars_mapping = '<leader>T'
+
+" completor
+let g:completor_php_omni_trigger = '([\w-]+|::[\w-]*|[\w-]+->\s*[\w-]*)$'
+
+" Syntastic
+set statusline+=%#warningmsg#
+set statusline+=%{SyntasticStatuslineFlag()}
+set statusline+=%*
+
+let g:syntastic_always_populate_loc_list = 1
+let g:syntastic_auto_loc_list = 1
+let g:syntastic_check_on_open = 1
+let g:syntastic_check_on_wq = 0
+
+""""""""""""""""""""""""""""""""""""""""""""""""""""""
+" => Functions and auto commands
+""""""""""""""""""""""""""""""""""""""""""""""""""""""
+fun! TrimWhitespace()
+    let l:save = winsaveview()
+    %s/\s\+$//e
+    call winrestview(l:save)
+endfun
+
+fun! ComplieCurrentCProgram()
+    w
+    !gcc % -o %< && ./%<
+endfun
+
+augroup autosourcing
+    autocmd!
+    autocmd BufWritePost ~/.vimrc source %
+augroup END