Semiotics is the study of the meaning and use of signs and sign systems.

The Schläfli symbol is a symbol used in multidimensional geometry.

The menu of this restaurant is various, making it difficult to choose.

I am very interested in social science.

Reading clefs is difficult.

The bass clef is one of the basic elements of music.

He is an expert in semiotics, and his theories are very profound.

This text is organized using section signs.

What does this at sign mean?

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