Change proof style.
帰納法的に書くことにした
Change composition.
tetrationの収束より先にf(a,x)=0の陰関数の個数についての証明をすることにした（未完）
系として収束範囲は直ちに導かれる
Wrote proof of presence of implicit functions.
Fix an equation style.
Add issue.tex.
Add 終わりに.
add a=x^(1/x)の説明.
Add 数値解の説明.
missing graph of numerical solutions.
Add introduction.
Add an explanation of behaivor of conjugate solutions.
Add description at header of section "solutions"
subsection 目的 is now header of section 数値解.
fix tab style
Fix tab style and some issue.
Fix description of tetration
Fix 文末尾
Add description of theorems.
Add some description to 語調を整える.
Add bibliography.
some fix.
use \input instead of \include
add \displaystyle before every \lim in inline math environment
Add plot files and graph.
Add graphs.