Never let abstract theory get in the way of a good plan, Cadet.

His book by that name demonstrated the highly abstract theory of structure and relative magnitude.

Seeing to it that war criminal trials go ahead is not some matter of abstract legal theory.

But here's the important point: These reforms aren't abstract theories that just make for good talking points.

Such groups were known for a long time before their abstract algebraic theory was developed according to the needs of major applications.

This is another example of abstract economic theory ignoring reality.

Finally, this is just some abstract theory dreamt up by someone who works at Microsoft.

The discovery did much to set him on the course for developing an abstract, general theory of infinite sets.

Europe should not be about remote bureaucracy and abstract theories.

In the abstract theory this comes from a line bundle condition of descent.