I am learning the basic concepts of differential geometry.

Projective geometry is a branch of mathematics that studies geometric objects such as points, lines, and planes and their relationships.

He is interested in geometrical shapes.

Euclidean geometry forms the foundation of geometry.

We should always remember the power of Kannon in difficult times.

The National Research and Development Agency plays a crucial role in advancing science and technology.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.