I attended an awards ceremony yesterday.

It's difficult to solve this formula.

I attended the unveiling ceremony of the new park.

We attended his memorial service.

I learned how to create formulas in math class.

He created a formula to solve the problem.

The calculation of determinants is an important part of mathematics.

This building adopts the Doric order of ancient Greek architecture.

This building is famous for its Ionic order columns.

This building is famous for its Corinthian columns.