She is best known for coining the term "polytope" for a convex solid in four dimensions, and having an impressive grasp of four-dimensional geometry from a very early age.

Throughout his two days of testimony, Mr. Baker answered virtually every question with a clarity that reflected an impressive grasp of global affairs and American policy.

Stockman was obviously a key figure; a supply-side zealot with an impressive grasp of the complexities of the budgetary process, he dazzled both colleagues and adversaries.

It was simple, yet brilliant, and showed an impressive grasp of logistics, combined with an intriguing new programming methodology that could save days in the initialization stages.

They commend the President for a "magnificent address" to Congress and an impressive grasp of the legislation.

Adriano Espaillat is an energetic and ambitious district leader who has a background in victim services and drug prevention, as well as an impressive grasp of neighborhood and state issues.

Sociologist Riesman found in the work an "impressive grasp of a great many theoretical and historical bits and pieces."

Marshall Hall's challenge to the medical evidence, though showing an impressive grasp of the subject, was unsuccessful.

Helen Sears, a health care executive, would bring an impressive grasp of city issues to the Council.

Despite this, Hayes was a precocious child who displayed an impressive grasp of the English language, a language that many Pimas did not know how to speak.