Kov·a·lev·sky(kŏv′ə-lĕv′skē), Sonya 1850-1891.
Russian mathematician. She made important contributions to calculus, and her mathematical description of the shape of Saturn's rings became a model for other scientists.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.