Stabilization hypothesis 1970-01-01
The Stabilization Hypothesis is a concept primarily found in economics and various scientific fields. In economics, it is often associated with the idea that certain policies or interventions can help stabilize an economy or a specific market to prevent extreme fluctuations, such as recessions or booms. The hypothesis suggests that by implementing appropriate measures, such as fiscal policies, monetary policies, or regulatory frameworks, economies can achieve a level of stability that fosters sustainable growth and reduces volatility.
Stuart Hampshire 1970-01-01
Stuart Hampshire (1914-2004) was a British philosopher known for his work in ethics, philosophy of mind, and political theory. He had a significant influence on contemporary philosophical thought, particularly in the areas of moral philosophy and the nature of thought. Hampshire is noted for his emphasis on the importance of human experience and the subjective aspects of ethical and philosophical inquiry.
Robert J. Goldston 1970-01-01
Robert J. Goldston is an American physicist known for his work in the field of plasma physics and nuclear fusion. He has been involved in research related to magnetic confinement fusion and has contributed to various projects and initiatives aimed at advancing fusion energy as a viable power source. He is associated with Princeton University and has also played significant roles in national and international fusion research collaborations. Goldston's work often focuses on the physics of tokamak devices and other approaches to achieving controlled nuclear fusion.
Pseudocircle 1970-01-01
A pseudocircle is a mathematical concept related to the field of geometry, specifically in the study of topology and combinatorial geometry. The term can refer to a set of curves or shapes that exhibit certain properties similar to a circle but may not conform to the strict definition of a circle. In some contexts, a pseudocircle can also refer to a simple closed curve that is homeomorphic to a circle but may not have the same geometric properties as a traditional circle.
Quasi-isomorphism 1970-01-01
Quasi-isomorphism is a concept that arises in the context of homological algebra and category theory, particularly in the study of chain complexes and their morphisms. In simple terms, a quasi-isomorphism is a morphism (map) between two chain complexes that induces isomorphisms on all levels of their homology.
Quasitoric manifold 1970-01-01
A quasitoric manifold is a type of manifold that can be described as a generalization of toric varieties. More precisely, quasitoric manifolds are smooth, even-dimensional manifolds that admit a smooth action by a torus (usually denoted as \( T^n \), where \( n \) is the dimension of the manifold) and have a specific relationship with combinatorial data represented by a simple polytope.
R-algebroid 1970-01-01
An \( R \)-algebroid is a mathematical structure that generalizes the concept of a differential algebra. Specifically, it is a type of algebraic structure that can be thought of as a generalization of the notion of a Lie algebroid, which itself is a blend of algebraic and geometric ideas.
Ramification (mathematics) 1970-01-01
In mathematics, "ramification" typically refers to the way a mathematical object behaves as it is extended or generalized, often in the context of field theory or algebraic geometry. The term is used in a few specific contexts, notably in: 1. **Field Theory**: In the context of number fields or function fields, ramification describes the behavior of prime ideals in an extension of fields.
Riemann–Hurwitz formula 1970-01-01
The Riemann–Hurwitz formula is a fundamental result in algebraic geometry and complex geometry that relates the properties of a branched cover of Riemann surfaces (or algebraic curves) to the properties of its base surface and the branching behavior of the cover.
Robert J. Gordon 1970-01-01
Robert J. Gordon is an American economist known for his work on economic growth, productivity, and historical economic analysis. He is a professor emeritus at Northwestern University and has made significant contributions to the understanding of the factors that drive economic productivity and growth. Gordon is particularly noted for his analysis of the decline in productivity growth in the United States since the mid-20th century.
Rubby Sherr 1970-01-01
Rubby Sherr (1916–2020) was an American physicist known for his significant contributions to the fields of nuclear physics and nuclear physics education. He worked on various topics in physics, including nuclear structure and the properties of nuclear force. Sherr was also known for his commitment to teaching and mentoring students throughout his career. In addition to his research and teaching work, he was involved in efforts to improve science education and promote the importance of physics in the curriculum.
Ruprecht Machleidt 1970-01-01
Ruprecht Machleidt is a physicist known for his work in the field of nuclear and particle physics, particularly in the area of nuclear force and few-body systems. He has contributed to the development of potential models that describe the interactions between nucleons (protons and neutrons) and has worked on the theoretical aspects of nuclear structure and dynamics. His research often involves advanced mathematical techniques and computational methods to explore complex interactions in nuclear physics.
Künneth theorem 1970-01-01
The Künneth theorem is an important result in algebraic topology that relates the homology groups of a product of two topological spaces to the homology groups of the individual spaces. It is particularly useful in the computation of homology groups for spaces that can be expressed as products of simpler spaces.
Secondary cohomology operation 1970-01-01
Secondary cohomology operations are mathematical constructs in the field of algebraic topology, specifically in the study of cohomology theories. They provide a way to define advanced operations on cohomology groups beyond the primary operations given by the cup product. In general, cohomology operations are mappings that take cohomology classes and produce new classes, reflecting deeper algebraic structures and geometric properties of topological spaces.
Simplicial set 1970-01-01
A simplicial set is a fundamental concept in algebraic topology and category theory that generalizes the notion of a topological space. It is a combinatorial structure used to study objects in homotopy theory and other areas of mathematics. ### Definition A **simplicial set** consists of: 1. **Sets of n-simplices**: For each non-negative integer \( n \), there is a set \( S_n \) which consists of n-simplices.
Simply connected at infinity 1970-01-01
In topology, a space is said to be simply connected if it is path-connected and every loop (closed path) in the space can be continuously contracted to a single point. When the term "at infinity" is used, it generally refers to the behavior of the space as we consider points that are "far away" or tend toward infinity.
Size function 1970-01-01
The term "Size function" can refer to different concepts depending on the context in which it is used, especially in programming, mathematics, and data structures. Here are a few interpretations: 1. **Database Context**: In SQL and other database management systems, you might encounter a function that returns the number of rows in a table or the size of a particular set of data. For example, `COUNT()` is a SQL function that returns the number of rows that match a specified criterion.
Size homotopy group 1970-01-01
The term "size homotopy group" does not appear to be a standard term in algebraic topology or related fields as of my last knowledge update in October 2023.
E. H. Moore 1970-01-01
E. H. Moore refers to Edward Hawkes Moore, an influential American mathematician recognized for his contributions to various fields, particularly in topology and algebra. Born in 1862 and passing in 1932, Moore made significant advances in the area of abstract algebra and is known for formulating Moore spaces in topology, which are a class of topological spaces that have properties of both compactness and local compactness.
Robert N. Shelton 1970-01-01
Robert N. Shelton is a notable figure primarily recognized for his role in academia and leadership in higher education. He served as the president of the University of Arizona from 2006 to 2012. Shelton has a background in civil engineering and holds degrees from the University of Texas at Austin and the University of Arizona. Under his leadership, the University of Arizona focused on enhancing research initiatives, promoting diversity and inclusion, and strengthening community engagement.