All articles starting with S
44,216 articles
Sum 41
Sum 41, Canadian pop-punk band from Ajax, Ontario, formed 1996 (originally Kaspir), named for the 41st day of summer; broke through with All Killer No Filler and "Fat Lip," sold 15 million albums, disbanded in 2025 after Heaven :x: Hell.
Sum of angles of a triangle
The sum of angles of a triangle, also known as the angle sum of a triangle, equals 180° in Euclidean plane geometry, stated in Euclid's Elements.
Sum of normally distributed random variables
The sum of normally distributed random variables is itself normally distributed whenever the summands are independent: means add, variances add, and the property extends to any linear combination.
Sum of squares
A sum of squares is an expression in which squared quantities are added, naming ideas in number theory, statistics, and optimization that exploit squares never being negative.
Sum-free set
A sum-free set is a set of numbers containing no solution of x + y = z with all three terms in the set, arising from Schur's 1916 work.
Sum-frequency generation
Sum-frequency generation is a second-order nonlinear optical process where two input waves mix in a nonlinear medium to produce light at the sum of their frequencies.
Sum-frequency generation spectroscopy
Sum-frequency generation spectroscopy, also called sum frequency generation vibrational spectroscopy, is a nonlinear optical method that overlaps visible and infrared lasers at a surface to measure vibrational spectra of interfacial molecules, introduced in 1987.
Sum-of-squares proof
A sum-of-squares proof is a certificate that a polynomial is nonnegative, given by writing it as a sum of squares of polynomials, testable efficiently through semidefinite programming.
SUM149PT
SUM149PT (CVCL_3422, RRID:CVCL_3422), also called SUM149, is a human triple-negative, BRCA1-mutant inflammatory breast cancer cell line derived from a primary invasive ductal carcinoma, used widely in IBC and TNBC drug research.
SUM159PT
SUM159PT (SUM-159, CVCL_5423) is a human triple-negative, claudin-low breast cancer cell line from an anaplastic pleomorphic carcinoma of a 71-year-old woman, with HRAS G12D, PIK3CA H1047L, TP53 mutations, used for estrogen-independent and invasive breast cancer research.
Suma
Suma was a Venezuelan writers' group formed in Caracas around 1943, gathering poets like Aquiles Nazoa and Ana Enriqueta Terán and publishing through its Ediciones Suma imprint.
Suma Brands
Suma Brands was a New York-based commerce company founded in 2020 that acquired and operated Amazon FBA brands, merging with D1 Brands in 2023 to form The Ambr Group.
Suma Kanakala
Suma Kanakala, born 1974, is an Indian television presenter and producer who works primarily in Telugu television and hosts the long-running ETV game show Star Mahila.
Suma y narración de los Incas
Suma y narración de los Incas is a chronicle of Inca history written in Cuzco around 1551 by Juan de Betanzos, drawing largely on the Inca point of view.
Sumac
Sumac: ground spice from Rhus coriaria (Arabic summāq, dark red), a purple sour Mediterranean seasoning; also the Rhus genus (~150 species), distinct from poisonous Toxicodendron vernix (poison sumac), which causes urushiol dermatitis.
Sumaco
Sumaco, isolated stratovolcano in Ecuador's Sub-Andean Amazon (Napo and Orellana provinces), 105 km east of Quito; alkaline back-arc volcano, potentially active, last confirmed eruption 1895, core of Sumaco Biosphere Reserve.
Sumaco Biosphere Reserve
Sumaco Biosphere Reserve, a UNESCO MAB site designated in 2000 in Ecuador's Napo province, 931,930 ha around Sumaco Volcano, spanning Andean páramo to Amazon rainforest, with Kichwa agroforestry economies and deforestation and illegal-mining pressures.
Šumadija (Шумадија)
Šumadija (Шумадија), central Serbia's historical heartland region between the Sava-Danube, Morava, and Kolubara rivers; forest-derived name, hilly relief up to Rudnik 1,132 m, uprisings of 1804–1815, Kragujevac as main center, and a noted wine region around Topola and Oplenac.
Sumalatha (సుమలత)
Sumalatha (సుమలత), full name Sumalatha Ambareesh, born 1963 in Chennai, is an Indian actress in over 220 Telugu, Malayalam, Kannada, Tamil, and Hindi films, known for Clara in Thoovanathumbikal, and the independent MP from Mandya who won in 2019 and joined the BJP in 2024.
Sumalee Montano
Sumalee Montano (born 1972, Columbus, Ohio) is an American actress, voice actress, and producer; voice of Arcee in Transformers: Prime, Yuna in Ghost of Tsushima, and Maria in The Casagrandes; LinLay Productions co-founder and star of The Deal.
Suman (actor)
Suman, born Suman Talwar, is an Indian film actor prominent in 1980s Telugu cinema, later playing villain and character roles and known for Annamayya, Sri Ramadasu, and Sivaji.
Suman Indori
Suman Indori (सुमन इंदौरी), a Hindi Colors TV family drama (2024–2025) produced by Prateek Sharma's Studio LSD, starring Ashnoor Kaur, Zain Imam, and Anita Hassanandani; 236 episodes about a chaat vendor in Indore, a devrani-jethani rivalry, and a forced political marriage.
Suman Kalyanpur (सुमन कल्याणपुर)
Suman Kalyanpur (सुमन कल्याणपुर, born Suman Hemmady, 1937–2026) was an Indian playback singer of Hindi and Marathi cinema, with about 857 Hindi songs and over 140 duets with Mohammed Rafi, remembered for her voice's close resemblance to Lata Mangeshkar's and the 2023 Padma Bhushan.
Suman Ranganathan
Suman Ranganathan (ಸುಮನ್ ರಂಗನಾಥನ್; also credited Suman Ranganath), born 1973 in Bangalore, is an Indian actress and model working in Kannada, Hindi, Tamil, Telugu and other film industries; known for C.B.I. Shankar, Sidlingu (Filmfare 2013), Neer Dose, Totapuri, and her recurring collaboration with director Vijaya Prasad.
Sumana (sāmaṇera)
Sumana (सुमन), also called Cūḷasumana, is a novice monk of the Theravada commentarial tradition who, ordained by Anuruddha at age seven, attained arahantship while his head was being shaved.
Sumana Sarkar (সুমনা সরকার)
Sumana Sarkar (সুমনা সরকার), West Bengal BJP politician; won Balagarh (SC) seat in 2026 with 125,624 votes, defeating TMC's Ranjan Dhara by 41,914; former TMC member, now state minister. Not the Bangladeshi BCS petitioner or Nepal's Sumana Shrestha.
Sumanene
Sumanene is a bowl-shaped polycyclic aromatic hydrocarbon, C21H12, first synthesized in 2003 from norbornadiene; its deeper bowl and three benzylic positions make it a platform for chiral curved aromatics and metal-ion receptors.
Sumanguru Kante
Sumanguru Kante, also written Soumaoro Kante, was a war leader and king of Sosso in the western Sudan, known for his harsh rule and his defeat by Sundiata Keita at the battle of Kirina in 1235.
Sumanirole
Sumanirole (U-95666E, PNU-95666E) is a nonergot imidazoquinolinone dopamine agonist, the first published D2-selective dopamine receptor agonist, developed by Pfizer for Parkinson's disease and restless legs syndrome but never FDA approved.
Sumant Mandal
Sumant Mandal is an American venture capital investor who co-founded March Capital in 2014 and serves as a managing partner, investing in enterprise automation and companies tied to the digitization of India.