The Schläfli symbol is a part of geometry, used to represent the shape of polyhedra.

Learning about the ancient special kana usage is very important for understanding ancient Japanese.

The Jōdai Tokushu Kanazukai is one of the notation methods of ancient Japan.

The special theory of relativity is a theory proposed by Einstein.

The International Phonetic Alphabet is an essential tool for linguistic research.

The treble clef is often used in musical scores.

He is good at reading the treble clef.

Special relativity is one of the fundamental theories of physics.

This music is flowing with a pleasant ⠐⠫ along with a beautiful melody.