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.

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.