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Genus: | Cardiocladius Kieffer, 1911 [1] |
Lauterbornia is a genus of midges in the bloodworm family (Chironomidae). Members of this genus live in cold water lakes in stenothermal or limited temperature change areas. [2] [3] Lauterbornia coracin is known for inhabiting oligotrophic or nutrient-depleted cold lake waters in the Northern Hemisphere. [3] [4]
Nekton or necton refers to aquatic organisms that can actively and persistently propel themselves through a water column. The term was proposed by German biologist Ernst Haeckel to differentiate between the active swimmers in a body of water, and the planktons that were passively carried along by the water current. As a guideline, nektonic organisms have a high Reynolds number and planktonic organisms a low one. However, some organisms can begin life as planktonic larvae and transition to nektonic juveniles and adults later on in life, sometimes making distinction difficult when attempting to classify certain plankton-to-nekton species as one or the other. For this reason, some biologists choose not to use this term.
In mathematics, the uniformization theorem states that every simply connected Riemann surface is conformally equivalent to one of three Riemann surfaces: the open unit disk, the complex plane, or the Riemann sphere. The theorem is a generalization of the Riemann mapping theorem from simply connected open subsets of the plane to arbitrary simply connected Riemann surfaces.
Oscar Zariski was an American mathematician. The Russian-born scientist was one of the most influential algebraic geometers of the 20th century.
Détente is the relaxation of strained relations, especially political ones, through verbal communication. The diplomacy term originates from around 1912, when France and Germany tried unsuccessfully to reduce tensions.
Harold Calvin Marston Morse was an American mathematician best known for his work on the calculus of variations in the large, a subject where he introduced the technique of differential topology now known as Morse theory. The Morse–Palais lemma, one of the key results in Morse theory, is named after him, as is the Thue–Morse sequence, an infinite binary sequence with many applications.
Serge Lang was a French-American mathematician and activist who taught at Yale University for most of his career. He is known for his work in number theory and for his mathematics textbooks, including the influential Algebra. He received the Frank Nelson Cole Prize in 1960 and was a member of the Bourbaki group.
Jean Alexandre Eugène Dieudonné was a French mathematician, notable for research in abstract algebra, algebraic geometry, and functional analysis, for close involvement with the Nicolas Bourbaki pseudonymous group and the Éléments de géométrie algébrique project of Alexander Grothendieck, and as a historian of mathematics, particularly in the fields of functional analysis and algebraic topology. His work on the classical groups, and on formal groups, introducing what now are called Dieudonné modules, had a major effect on those fields.
Cold Lake is a city in east-central Alberta, Canada and is named after the lake nearby. Canadian Forces Base Cold Lake is situated within the city's outer limits.
Joseph Hillel Silverman is a professor of mathematics at Brown University working in arithmetic geometry, arithmetic dynamics, and cryptography.
Joseph Daniel Harris is a mathematician at Harvard University working in the field of algebraic geometry. After earning an AB from Harvard College, where he took Math 55, he continued at Harvard to study for a PhD under Phillip Griffiths.
David Eisenbud is an American mathematician. He is a professor of mathematics at the University of California, Berkeley and former director of the then Mathematical Sciences Research Institute (MSRI), now known as Simons Laufer Mathematical Sciences Institute (SLMath). He served as Director of MSRI from 1997 to 2007, and then again from 2013 to 2022.
Phillip Augustus Griffiths IV is an American mathematician, known for his work in the field of geometry, and in particular for the complex manifold approach to algebraic geometry. He is a major developer in particular of the theory of variation of Hodge structure in Hodge theory and moduli theory, which forms part of transcendental algebraic geometry and which also touches upon major and distant areas of differential geometry. He also worked on partial differential equations, coauthored with Shiing-Shen Chern, Robert Bryant and Robert Gardner on Exterior Differential Systems.
Robert Steinberg was a mathematician at the University of California, Los Angeles.
Eagle Peak is a mountain in the Absaroka Range in the U.S. state of Wyoming and at 11,372 feet (3,466 m) is the highest point in Yellowstone National Park. It is located about 6 miles (9.7 km) east of the southeast arm of Yellowstone Lake.
Victor William Guillemin is an American mathematician. He works at the Massachusetts Institute of Technology in the field of symplectic geometry, and he has also made contributions to the fields of microlocal analysis, spectral theory, and mathematical physics.
The pygmy whitefish is a freshwater whitefish of the genus Prosopium in the family Salmonidae. Found in the mountain streams and lakes in western North America, it also has isolated populations in Lake Superior and in Ekityki Lake, Chukchi Peninsula.
John Colin Stillwell is an Australian mathematician on the faculties of the University of San Francisco and Monash University.
Bosmina is a genus in the order Cladocera, the water fleas. Its members can be distinguished from those of Bosminopsis by the separation of the antennae; in Bosminopsis, the antennae are fused at their bases.
Erpobdella is a genus of leeches in the family Erpobdellidae. Members of the genus have three or four pairs of eyes, but never have true jaws, and are typically {{convert|2|-|5|centimetres|1} (|0,2|-|0,5|milimetres)long. All members do not feed on blood, but instead are predators of small aquatic invertebrates, which they often swallow whole.
Charles Whittlesey Curtis is a mathematician and historian of mathematics, known for his work in finite group theory and representation theory. He is a retired professor of mathematics at the University of Oregon.