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Clàudia Valls
Clàudia Valls Anglés is a mathematician and an expert in dynamical systems. She is an associate professor in the Instituto Superior Técnico of the University of Lisbon in Portugal. Education Valls completed a doctorate at the University of Barcelona The University of Barcelona (official name in ; UB), formerly also known as Central University of Barcelona (), is a public research university located in the city of Barcelona, Catalonia, Spain. It was established in 1450. With 76,000 students, ... in 1999. Her dissertation, ''The Classical Arnold Example of Diffusion with Two Equal Parameters'', was supervised by . Books Valls is the co-author of books with Luís Barreira and others, including: *''Instability in Hamiltonian systems'' (with Antonio Pumariño, Electronic Journal of Qualitative Theory of Differential Equations Monograph Series, Vol. 1, 2005) *''Stability of nonautonomous differential equations'' (with Luís Barreira, Lecture Notes in Mathematics, Vol. 1926, Spri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dynamical System
In mathematics, a dynamical system is a system in which a Function (mathematics), function describes the time dependence of a Point (geometry), point in an ambient space, such as in a parametric curve. Examples include the mathematical models that describe the swinging of a clock pendulum, fluid dynamics, the flow of water in a pipe, the Brownian motion, random motion of particles in the air, and population dynamics, the number of fish each springtime in a lake. The most general definition unifies several concepts in mathematics such as ordinary differential equations and ergodic theory by allowing different choices of the space and how time is measured. Time can be measured by integers, by real number, real or complex numbers or can be a more general algebraic object, losing the memory of its physical origin, and the space may be a manifold or simply a Set (mathematics), set, without the need of a Differentiability, smooth space-time structure defined on it. At any given time, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Instituto Superior Técnico
The Instituto Superior Técnico (IST, also known as Técnico, and stylized TÉCNICO LISBOA; English: ) is the school of engineering and technology of the University of Lisbon. It was founded as an autonomous school in 1911, and was integrated into the Technical University of Lisbon (now part of the University of Lisbon) in 1930. IST is the largest school of engineering in Portugal by number of enrolled students, faculty size, scientific production and patents. IST has three Campus, campuses, all located in the Lisbon metropolitan area: the Alameda campus in Lisbon, the Taguspark campus in the Oeiras Municipality, Portugal, Oeiras municipality, and the ''Tecnológico e Nuclear'' campus in the Loures, Loures municipality. The school is divided in 11 departments that are responsible for teaching undergraduate and postgraduate programs. Each department is organized in sections, which group together specific subjects within its scientific area. In addition, the laboratories of the sev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Lisbon
The University of Lisbon (ULisboa; ) is a public university, public research university in Lisbon, and Portugal's largest university. It was founded in 1911, but the university's present structure dates to the 2013 merger of the former University of Lisbon (1911–2013) and the Technical University of Lisbon, Technical University of Lisbon (1930–2013). History University of Coimbra, the first Portuguese university, was established in Lisbon between 1288 and 1290, when Denis of Portugal, Dinis I promulgated the letter ''Scientiae thesaurus mirabili'', granting several privileges to the students of the ''studium generale'' in Lisbon, proving that it was already founded on that date. There was an active participation in this educational activity by the Portuguese Crown and its king, through its commitment of part of the subsidy of the same, as by the fixed incomes of the Church. This institution moved several times between Lisbon and Coimbra, where it settled permanently in 1537. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Barcelona
The University of Barcelona (official name in ; UB), formerly also known as Central University of Barcelona (), is a public research university located in the city of Barcelona, Catalonia, Spain. It was established in 1450. With 76,000 students, it is one of the biggest universities in Spain and has also been ranked 1st in the country in most of the 2024 rankings. It has 106 departments and more than 5,000 full-time researchers, technicians and research assistants, most of whom work in the 243 research groups as recognized and supported by the Government of Catalonia. In 2010, the UB was awarded 175 national research grants and 17 European grants and participated in over 500 joint research projects with the business sector, generating an overall research income of 70 million euros. The work of these groups is overseen by the UB's research centres and institutes which collaborate with leading research institutions and networks in Spain and abroad. The UB is also home to three la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Luís Barreira
Luís Barreira (born 25 September 1968) is a Portuguese mathematician and a professor in the department of mathematics of Instituto Superior Técnico. He is the author or coauthor of 13 books, many with Clàudia Valls, including among them Análise Complexa e Equações Diferenciais, Exercícios de Análise Complexa e Equações Diferenciais, Lyapunov Exponents and Smooth Ergodic Theory, Nonuniform Hyperbolicity, Stability of Nonautonomous Differential Equations, and Dimension and Recurrence in Hyperbolic Dynamics. He's also the author of several scientific articles, predominantly in Differential Equations, Dynamic Systems, Ergodic Theory and Multifractal Analysis. Education Barreira got his degree in 1991 in Applied Mathematics and Computation, from Instituto Superior Técnico. He got his PhD in 1996 at the University of Pennsylvania The University of Pennsylvania (Penn or UPenn) is a Private university, private Ivy League research university in Philadelphia, P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Year Of Birth Missing (living People)
A year is a unit of time based on how long it takes the Earth to orbit the Sun. In scientific use, the tropical year (approximately 365 solar days, 5 hours, 48 minutes, 45 seconds) and the sidereal year (about 20 minutes longer) are more exact. The modern calendar year, as reckoned according to the Gregorian calendar, approximates the tropical year by using a system of leap years. The term 'year' is also used to indicate other periods of roughly similar duration, such as the lunar year (a roughly 354-day cycle of twelve of the Moon's phasessee lunar calendar), as well as periods loosely associated with the calendar or astronomical year, such as the seasonal year, the fiscal year, the academic year, etc. Due to the Earth's axial tilt, the course of a year sees the passing of the seasons, marked by changes in weather, the hours of daylight, and, consequently, vegetation and soil fertility. In temperate and subpolar regions around the planet, four seasons a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Living People
Purpose: Because living persons may suffer personal harm from inappropriate information, we should watch their articles carefully. By adding an article to this category, it marks them with a notice about sources whenever someone tries to edit them, to remind them of WP:BLP (biographies of living persons) policy that these articles must maintain a neutral point of view, maintain factual accuracy, and be properly sourced. Recent changes to these articles are listed on Special:RecentChangesLinked/Living people. Organization: This category should not be sub-categorized. Entries are generally sorted by family name In many societies, a surname, family name, or last name is the mostly hereditary portion of one's personal name that indicates one's family. It is typically combined with a given name to form the full name of a person, although several give .... Maintenance: Individuals of advanced age (over 90), for whom there has been no new documentation in the last ten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
21st-century Spanish Mathematicians
File:1st century collage.png, From top left, clockwise: Jesus is crucified by Roman authorities in Judaea (17th century painting). Four different men (Galba, Otho, Vitellius, and Vespasian) claim the title of Emperor within the span of a year; The Great Fire of Rome (18th-century painting) sees the destruction of two-thirds of the city, precipitating the empire's first persecution against Christians, who are blamed for the disaster; The Roman Colosseum is built and holds its inaugural games; Roman forces besiege Jerusalem during the First Jewish–Roman War (19th-century painting); The Trưng sisters lead a rebellion against the Chinese Han dynasty (anachronistic depiction); Boudica, queen of the British Iceni leads a rebellion against Rome (19th-century statue); Knife-shaped coin of the Xin dynasty., 335px rect 30 30 737 1077 Crucifixion of Jesus rect 767 30 1815 1077 Year of the Four Emperors rect 1846 30 3223 1077 Great Fire of Rome rect 30 1108 1106 2155 Boudican revolt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Women Mathematicians
A woman is an adult female human. Before adulthood, a female child or Adolescence, adolescent is referred to as a girl. Typically, women are of the female sex and inherit a pair of X chromosomes, one from each parent, and women with functional uteruses are capable of pregnancy and giving childbirth, birth from puberty until menopause. More generally, sex differentiation of the female fetus is governed by the lack of a present, or functioning, ''SRY'' gene on either one of the respective sex chromosomes. Sex differences in human physiology, Female anatomy is distinguished from male anatomy by the female reproductive system, which includes the ovaries, fallopian tubes, uterus, vagina, and vulva. An adult woman generally has a wider pelvis, broader hips, and larger breasts than an adult man. These characteristics facilitate childbirth and breastfeeding. Women typically have less facial and other body hair, have a higher body fat composition, and are on average shorter and less ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dynamical Systems Theorists
In mathematics, a dynamical system is a system in which a function describes the time dependence of a point in an ambient space, such as in a parametric curve. Examples include the mathematical models that describe the swinging of a clock pendulum, the flow of water in a pipe, the random motion of particles in the air, and the number of fish each springtime in a lake. The most general definition unifies several concepts in mathematics such as ordinary differential equations and ergodic theory by allowing different choices of the space and how time is measured. Time can be measured by integers, by real or complex numbers or can be a more general algebraic object, losing the memory of its physical origin, and the space may be a manifold or simply a set, without the need of a smooth space-time structure defined on it. At any given time, a dynamical system has a state representing a point in an appropriate state space. This state is often given by a tuple of real numbers or b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Barcelona Alumni
A university () is an institution of tertiary education and research which awards academic degrees in several academic disciplines. ''University'' is derived from the Latin phrase , which roughly means "community of teachers and scholars". Universities typically offer both undergraduate and postgraduate programs. The first universities in Europe were established by Catholic monks. The University of Bologna (), Italy, which was founded in 1088, is the first university in the sense of: *being a high degree-awarding institute. *using the word (which was coined at its foundation). *having independence from the ecclesiastic schools and issuing secular as well as non-secular degrees (with teaching conducted by both clergy and non-clergy): grammar, rhetoric, logic, theology, canon law and notarial law.Hunt Janin: "The university in medieval life, 1179–1499", McFarland, 2008, , p. 55f.de Ridder-Symoens, Hilde''A History of the University in Europe: Volume 1, Universities in the Middl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
