Wer datete Olga Tsuberbiller?

Olga Tsuberbiller (Russian: Ольга Николаевна Цубербиллер, 19 September [O.S. 7 September] 1885 - 28 September 1975) was a Russian mathematician noted for her creation of the textbook Problems and Exercises in Analytic Geometry. The book has been used as a standard text for high schools since its creation in 1927. Sophia Parnok, noted Russian poet dedicated her verses in the Half-voiced cycle to Tsuberbiller, and the educator cared for Parnok during her final illness, later becoming her literary executor. She later became the partner of the noted opera singer, Concordia Antarova. Tsuberbiller was designated as an Honored Scientist of the Russian Soviet Federative Socialist Republic in 1955.

Concordia Antarova (Russian: Конкордия Евгеньевна Антарова, also known as Cora Antarova, 25 April 1886 O.S./13 April 1886 (N. S.) – 6 February 1959) was a Russian contralto who starred in the Bolshoi Theater for more than twenty years. After her singing career ended, she wrote theosophical texts. She was recognized as an Honored Artist of the RSFSR in 1933.

Sofija Jakowlewna Parnok (russisch София Яковлевна Парнок, wiss. Transliteration Sofija Jakovlevna Parnok, manchmal auch Sophia, Sofia, Sofja oder Sofya; * 30. Juli^jul. / 11. August 1885^greg. in Taganrog; † 26. August 1933 in Karinskoje, Oblast Moskau) war eine russische Dichterin und Übersetzerin, Schwester des Dichters Walentin Parnach und der Kinderschriftstellerin Jelisaweta Tarachowskaja.