Charlotte Froese Fischer instance of human
Charlotte Froese Fischer (born 1929) is a Canadian-American applied mathematician and computer scientist noted for the development and implementation of the Multi-Configurational Hartree–Fock (MCHF) approach to atomic-structure calculations and its application to the description of atomic structure and spectra.
The experimental discovery of the negative ion of calcium
 
was motivated by her theoretical prediction of its existence.
This was the first known anion of a Group 2 element. 
Its discovery was cited in Froese Fischer's election to Fellow of the American Physical Society.Early life
Charlotte Froese was born on September 21, 1929, in the village of Stara Mykolaivka (formerly Pravdivka, and Nikolayevka), in the  Donetsk region, in the present-day Ukraine, to parents of Mennonite descent. Her parents immigrated to Germany in 1929 on the last train allowed to cross the border before its closure by Soviet authorities. After a few months in a refugee camp, her family was allowed to immigrate to Canada, where they eventually established themselves in Chilliwack, British Columbia.
type of example of manifestation of representation of