He is majoring in applied mathematics at university.

Combinatorial mathematics is a branch of mathematics that studies the combinations of things.

He understands the importance of learning.

He is majoring in psychology.

Gaku is my best friend.

My major is chemical engineering.

We are working on the development of new software.

We are developing a new software.

He solved a large number of problems.

Functional analysis is a branch of mathematics that studies the properties of functions in infinite-dimensional spaces.