My father works at a major law firm.

He thought deeply about the result of that juristic act.

He fell for a pyramid scheme and lost a lot of money.

I attended a lecture on economics today.

Kohei is my best friend.

It is believed that the size of this universe is infinitely large.

This infinitesimal change is a fundamental concept of differentiation.

In mathematics, infinity represents a very large number.

This program has fallen into an infinite loop.

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