The city is divided into several block groups.

The Brauer groups of the two fields are isomorphic.

Regular expressions allow you to use capturing groups to extract specific parts of a string.

There are many triangle groups in mathematics.

The Chow groups of the projective space are important in algebraic geometry.

I joined several chat groups to meet new people.

There are many lamplighter groups in the city.

Frieze groups are mathematical objects used to describe symmetries in one-dimensional patterns.

The Witt groups of the ring are isomorphic to each other.

Hate groups are a threat to our society.