All articles starting with O
9,097 articles
Olga Taussky-Todd
Olga Taussky-Todd (1906–1995) was an Austrian-born mathematician who made matrix theory an independent branch of mathematics, publishing nearly 300 papers and becoming the first woman full professor at Caltech in 1971.
Olga Tokarczuk
Olga Tokarczuk, Polish novelist born 1962 in Sulechow, author of Flights and The Books of Jacob; 2018 Nobel Prize in Literature (awarded 2019) and 2018 International Booker Prize winner.
Olga Vakrusheva
Olga Vakrusheva (Vakhrusheva), Soviet 800m runner born 1947; set the women's world indoor 800m record of 1:58.4h in Moscow on 17 February 1980, which stood until 1987; personal best 1:57.1h.
Olga Vasyukova
Olga Petrovna Vasyukova (Ольга Васюкова), Russian synchronized swimmer born 1980 in Budapest; Olympic team gold at Sydney 2000 (99.146), European champion 1999 and 2000; retired at 20, now a Match TV presenter.
Olga Zaitseva (Ольга Алексеевна Зайцева)
Olga Zaitseva (Ольга Алексеевна Зайцева), born 1978 in Moscow, Russian biathlete; two Olympic relay golds (2006, 2010), 2010 mass start silver, three world titles; Sochi 2014 results disqualified for doping, upheld by CAS in 2020.
Olga Zaytseva
Olga Zaytseva names two Russian athletes: biathlete Olga Alekseyevna Zaytseva (born 1978), two-time Olympic relay champion later disqualified for Sochi 2014 doping, and sprinter Olga Igorevna Zaytseva (born 1984), indoor 4x400m relay world record holder.
Olga Zubareva
Olga Zubareva (Ольга Валентиновна Зубарева), born 1958 in Tashkent, Ukrainian Soviet handball line player; 1980 Olympic gold with USSR, 1982 world champion, Spartak Kyiv 1976–85. Not the researcher or other namesakes.
Olga's reforms of tribute and pogosts
Olga's reforms of tribute and pogosts (Реформы Ольги) were Princess Olga of Kiev's measures, around 947, replacing the arbitrary poliudie with fixed tribute quotas (uroki) collected at designated centers (pogosts).
Olga's reforms: pogosty and uroki
Olga's reforms: pogosty and uroki were the tribute and administrative measures Princess Olga of Kiev imposed after the Drevlian revolt of 945, recorded in the Primary Chronicle.
Olga's revenge on the Drevlians
Olga's revenge on the Drevlians was the 946 campaign in which Olga, regent for her son Svyatoslav after Igor's murder in 945, defeated the Drevlians and burned their capital Iskorosten.
Olgierd Zienkiewicz
Olgierd (Olek) Cecil Zienkiewicz was a British civil engineer, a leading developer of the finite element method, and professor at Swansea University from 1961 to 1988.
Olgotrelvir sodium capsules
Olgotrelvir sodium capsules (奥格特韦钠胶囊, Aoweining), also known as STI-1558 or OVYDSO, are a dual Mpro and cathepsin L inhibitor oral antiviral for mild-to-moderate COVID-19, NMPA-approved in China in October 2025 without ritonavir.
Olgovichi dynasty
The Olgovichi (Ольговичи) were a princely branch of the Rurikid dynasty of Kievan Rus', descended from Oleg Svyatoslavich (died 1115) and based in Chernigov. They rivaled the Monomashichi for Kiev until the Mongol invasion of 1237–40.
Olha Kharlan
Olha Kharlan (Ольга Харлан), Ukrainian sabre fencer born 1990; six Olympic medals including team golds 2008 and 2024, four-time individual world champion, disqualified in 2023 for refusing a Russian opponent's handshake.
Olha Kobylianska
Olha Kobylianska (Ольга Кобилянська, 1863–1942) was a Ukrainian modernist prose writer and feminist from Bukovyna who began writing in German and is best known for Tsarivna and Zemlia.
Olha Kuryshko
Olha Kuryshko is a Ukrainian politician who serves as permanent representative of the President of Ukraine in the Autonomous Republic of Crimea, monitoring Russian-occupied Crimea.
Olha Zhovnir
Olha Zhovnir (Ольга Богданівна Жовнір, born 1989) is a Ukrainian right-handed sabre fencer, 2008 Beijing Olympic team sabre gold medalist, and multiple World and European team medalist for Ukraine.
Oli Dugmore
Oli Dugmore is a British political journalist, executive editor (digital) of the New Statesman and founder of PoliticsJOE at JOE.co.uk, known for viral political video, the Unfiltered podcast, and BBC and LBC appearances.
Oli Herbert
Oli Herbert was the co-founding lead guitarist of Massachusetts metalcore band All That Remains, played on all nine albums including The Fall of Ideals, and died in October 2018 aged 44.
Oli Higginson
Oli Higginson (born 1994, London) is a British actor and singer-songwriter. Known as Footman John in Netflix's Bridgerton and as Modern Oli, he trained at Guildhall and won recognition for Cassio in Othello at Shakespeare's Globe.
Oli London
Oli London (Oliver Squire), British influencer born 1990, known for surgeries to resemble BTS's Jimin, identifying as Korean, then detransitioning in 2022 to become a conservative author and commentator.
Oli McBurnie
Oli McBurnie, born Oliver McBurnie in Leeds in 1996, is a Scottish striker for Hull City who previously played for Sheffield United and won 17 Scotland caps.
Oli Sykes
Oliver Scott (Oli) Sykes is the English lead vocalist of Bring Me the Horizon, formed in Sheffield in 2004, and founder of Drop Dead Clothing; frontman of Sempiternal and the Post Human era.
Oliceridine
Oliceridine (Olinvyk, TRV130) is an intravenous mu-opioid receptor agonist approved by the FDA in 2020 for moderate to severe acute pain in adults; developed by Trevena as a G protein-biased agonist, with contested mechanism and roughly half morphine's adverse-event odds at equal analgesia.
OLIG2
OLIG2 (oligodendrocyte transcription factor 2, BHLHB1) is a chromosome 21 bHLH transcription factor essential for motor neuron and oligodendrocyte development, a universal marker of diffuse gliomas, and an emerging drug target.
Oligarchic growth
Oligarchic growth is a stage of planet formation, following runaway growth, in which similar-sized planetary embryos slowly accrete planetesimals from their own feeding zones while keeping nearly fixed orbital separations.
Oligarchy
Oligarchy (Greek oligos, few + arkhein, to rule) is government by a small elite, classically the wealthy few, defined by Aristotle and theorized by Michels's 1911 iron law; modern cases include Russia and debates over the United States.
Oligo-ovulation
Oligo-ovulation (oligoovulation), infrequent ovulation defined as cycles over 35 days or fewer than 8 per year; ICD-11 5A80.4; a Rotterdam-criteria feature of PCOS with a milder phenotype than anovulation.
Oligoarticular juvenile idiopathic arthritis
Oligoarticular juvenile idiopathic arthritis is the most common chronic arthritis of childhood in Europe and North America, typically affecting a knee or ankle in girls under six.
Oligoastrocytoma, dual genotype
Oligoastrocytoma, dual genotype (ORPHA:251656), also called mixed oligoastrocytoma, is a rare low-grade mixed glioma containing both astrocytoma-type (TP53/ATRX) and oligodendroglioma-type (1p/19q codeleted) genotypes; fewer than 10 cases reported, term deleted in WHO 2021.