Kuka päivitti 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.

Sophia Yakovlevna Parnok (Russian: София Яковлевна Парнок, Yiddish: סאָפיאַ פארנוכ; 30 July 1885 O.S./11 August 1885 (N.S.) – 26 August 1933) was a Russian poet, journalist and translator. From the age of six, she wrote poetry in a style quite distinct from the predominant poets of her times, revealing instead her own sense of Russianness, Jewish identity and lesbianism. Besides her literary work, she worked as a journalist under the pen name of Andrei Polianin. She has been referred to as "Russia's Sappho", as she wrote openly about her seven lesbian relationships.

Sonya Yakovlevna Parnokh was born into a well-to-do family of professional Jews in a provincial city outside the Pale of Settlement. Her mother died after giving birth to her twin siblings and she was raised by her father and her step-mother, leaving her feeling her childhood lacked emotional support. From a young age, she wrote poetry and acknowledged her uniqueness—her lesbianism, her Graves' disease, and her religion—which set her apart from her peers.

Completing her studies at the Mariinskaya Gymnasium, in 1905 Parnok moved to Geneva and attempted to study music, but lacked any real drive and quickly returned to Moscow. To distance herself from her father's control and her financial dependence on him, she published her first book of poems in 1906 under the pseudonym Sophia Parnok and married Vladimir Volkenstein in 1907. Within two years, the marriage failed and she began working as a journalist.

From 1913, Parnok exclusively had relationships with women and used those love relationships to fuel her creativity. In a succession of relationships with Marina Tsvetaeva, Lyudmila Erarskaya, Olga Tsuberbiller, Maria Maksakova and Nina Vedeneyeva, her muses propelled her to publish five collections of poetry and write several librettos for opera, before her disease claimed her life in 1933.

Her poetry was banned after 1928, and her work almost forgotten until 1979 when her collected works were published for the first time. While scholars have focused on her early influential relationship with Tsvetaeva, her best works are now recognized as those written from 1928.