What are the sources of mathematical subject matter?

• What is about the meaning of a mathematical object?

• What is the nature of a mathematical proposition?

• What is the relationship between logic and mathematics?

• What is the role of mathematics hermeneutic?

• Mathematics played a role in the investigation which type

• What is the subject of mathematical investigations?

• What is the human traits behind mathematics?

• What is mathematical beauty?

• What is the ...