In topology, a regular open set has the property that it equals the interior of its closure.

In many topology texts, a regular closed set is defined as a set that equals the closure of its interior.

In the lecture, the professor showed how a regular element in a ring guarantees that multiplication by that element is injective.

The company wants to design products that appeal to regular Joes, not just tech enthusiasts.

After the raid, the crew began to nap the regulars before dawn, ensuring everyone received their share.

To compute the value of certain divergent integrals arising in boundary-value problems, the team applied Hadamard regularization to discard divergent pieces and extract the finite result.

Hadamard regularizations were applied to stabilize the inverse problem and reduce numerical artifacts.

We ordered three regular coffees and sat by the window to watch the rain.

The architect used regular grids to organize the facade's windows into a harmonious pattern.

Many retirees rely on regular dividends to supplement their fixed incomes.