This program has fallen into an infinite loop.

Calculating infinite series is one of the more difficult parts of mathematics.

Differential geometry is a field of mathematics that studies geometric objects such as curves and surfaces using differential and integral calculus.

I am learning how to solve differential equations.

The little baby is sleeping.

A small bird is perched on the window sill, singing a song.

A small bird perched on the window sill and began to chirp.

My child goes to Matsubara Elementary School.

Where is Mr. Shou?

A small bird is perched on the window sill and singing.