Abstract algebra is a branch of mathematics that studies algebraic structures.

I studied linear algebra at university.

He is good at algebra.

He is known as a person with learning.

Euclidean geometry forms the foundation of geometry.

He is interested in geometrical shapes.

He is an expert in topology.

I am learning the basic concepts of differential geometry.

Computational geometry is an important field of computer science.

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