I studied calculus at university.

He is an expert in folklore studies, and his research is highly regarded worldwide.

He is an expert in experimental psychology.

He is known as an expert in criminology.

He is known as an expert in population genetics.

He is an expert in theoretical physics.

He is an expert in phytopathology, making a significant contribution to agriculture.

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.

He is an expert in computational linguistics and is involved in the development of artificial intelligence.

He deeply believes in the principles of national socialism.