There is an opening ceremony at school tomorrow.

The opening ceremony was very glamorous and moving.

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.