Vim is real
Merge pull request #2 from esotericaone/vim-is-real

Merge a commit for Vim users
s/Tokyo institute of Technology/Tokyo Institute of Technology/
s/培/倍/
s/characterstic/characteristic/
translate to 5.2.1
Merge pull request #3 from esotericaone/fix-case

s/Tokyo institute of Technology/Tokyo Institute of Technology/
Merge pull request #4 from esotericaone/fix-scaler-kanji

s/培/倍/
a bit of emendation
Merge pull request #5 from esotericaone/fix-characteristic-typo

s/characterstic/characteristic/
punctuation halfize
高校ではベクトルを幾何学的対象とみなしize
Merge pull request #6 from esotericaone/translate-chapter-5

translate to 5.2.1
Fix typo and change the class for the ja file
Add a chapter introductory study of function spaces by @f_tangent
Add the chapter, functional analysis, from yukimi's website
Add a new chapter in Calculus, volume and area for sphere
Add a chapter, Guidance for algebraic geometry by @waheyhey
fix a punctuation
Merge pull request #7 from esotericaone/fix-a-punctuation

fix a punctuation