Cosmology books
Cosmology books are texts that explore the study of the universe, its origins, structure, evolution, and eventual fate. They cover a wide range of topics within the field of cosmology, which is a branch of astronomy that deals with questions about the universe as a whole. Here are some key themes and topics often found in cosmology books: 1. **The Big Bang Theory**: Exploration of the origins of the universe, including the evidence supporting the Big Bang model.
Multiplicative group
A **multiplicative group** is a mathematical structure consisting of a set equipped with a binary operation that satisfies certain properties. Specifically, a multiplicative group is a set \( G \) along with a binary operation (commonly denoted as multiplication) that has the following characteristics: 1. **Closure**: For any two elements \( a, b \in G \), the result of the operation \( a \cdot b \) is also in \( G \).
N-ary group
An N-ary group is a generalization of the concept of a group in abstract algebra. In group theory, a group is defined as a set equipped with a binary operation that satisfies four fundamental properties: closure, associativity, identity, and invertibility.
Near-field (mathematics)
In mathematics, particularly in the context of algebra and number theory, a "near-field" may refer to a structure similar to a field, but with weaker properties. A near-field typically satisfies most properties of a field except for certain requirements, such as the existence of multiplicative inverses for all non-zero elements. However, the concept of "near-field" is not as widely recognized or standardized as fields, rings, or groups.
Moving parts
"Moving Parts" can refer to various concepts or contexts depending on the field in which it is used. Here are a few interpretations: 1. **Mechanical Context**: In engineering or machinery, "moving parts" often refers to components of a machine that move relative to each other. These parts are essential for the operation of many devices, such as engines, gears, and other mechanical systems. The interaction of moving parts is critical for functionality, efficiency, and maintenance.
Danish physicists by century
Danish physicists have made significant contributions across various centuries. Here's a brief overview of notable Danish physicists organized by century: ### 17th Century - **Tycho Brahe (1546–1601)**: Although he is more commonly associated with astronomy, his observational techniques greatly influenced the development of physics and the scientific method.
The First International Statistical Congress was held in 1853 in London, England. It marked a significant milestone in the development of statistics as a formal discipline. This congress brought together statisticians, mathematicians, and scientists from various countries to discuss advances in statistical theory and its applications. The primary focus of the congress was to promote the collection and use of statistical data for social and economic planning. It also aimed to establish standards for statistical practice and to encourage collaboration among statisticians across different nations.
The International Conference on Defects in Semiconductors (ICDS) is a scientific conference that focuses on the study of defects in semiconductor materials and their implications for electronic and optoelectronic devices. This conference serves as a platform for researchers, scientists, and industry professionals to present their latest findings, exchange ideas, and discuss developments related to defects in semiconductors, which are critical to the performance, reliability, and functionality of semiconductor devices.
The International Conference on High Energy Physics (ICHEP) is a prominent scientific conference that focuses on the field of high-energy particle physics. It is typically held biennially and serves as a major platform for researchers, scientists, and practitioners in the field to present their latest findings, discuss significant developments, and share knowledge and ideas related to particle physics, cosmology, and related areas.
The International Conference on Nitride Semiconductors (ICNS) is a prominent international conference focused on the research and development of nitride semiconductors, particularly materials such as gallium nitride (GaN) and aluminum nitride (AlN). These materials have significant applications in optoelectronics, power electronics, and high-frequency devices, including blue and white LEDs, laser diodes, and high-power electronic devices.
Curtis J. Humphreys
Curtis J. Humphreys is not widely known in public discourse as of my last knowledge update in October 2023. If he is a figure in a specific field (such as academia, arts, business, etc.) or has gained prominence more recently, there may be limited information available. You might need to provide more context or specify the area of interest related to Curtis J. Humphreys for a more detailed response.
Near-ring
A **near-ring** is a mathematical structure similar to a ring, but it relaxes some of the conditions that define a ring. Specifically, a near-ring is equipped with two binary operations, typically called addition and multiplication, but it does not require that all the properties of a ring hold. Here are the main features of a near-ring: 1. **Set**: A near-ring consists of a non-empty set \( N \).
Mirror trading
Mirror trading is a trading strategy where a trader replicates the trading activities or positions of another trader, typically a successful one. This method can take place in various forms, including: 1. **Manual Mirror Trading**: Involves a trader manually copying the trades of another individual or group of traders. This can be done by observing and executing the same trades on a personal trading account.
Numerical semigroup
A **numerical semigroup** is a special type of subset of the non-negative integers. Specifically, it is a subgroup of the non-negative integers under addition that is closed under addition and contains the identity element 0. More formally, a numerical semigroup is defined as follows: 1. It is a subset \( S \) of the non-negative integers \( \mathbb{N}_0 = \{0, 1, 2, \ldots\} \).
DROWN attack
The DROWN attack (Decrypting RSA with Obsolete and Weakened eNcryption) is a security vulnerability that affects servers supporting both the HTTPS protocol (using SSL/TLS) and the outdated SSLv2 protocol. Discovered in 2016, the DROWN attack takes advantage of weaknesses in the SSLv2 protocol to decrypt data intercepted from secure connections.
Hubert Chanson
Hubert Chanson is a prominent figure in the field of hydraulics and fluid mechanics, known primarily for his work in open channel flow and environmental hydraulics. He is a professor at the University of Queensland in Australia and has published numerous research papers, books, and articles on various aspects of fluid dynamics, particularly related to water engineering, river hydraulics, and ecological impacts. His work often emphasizes the relationship between hydraulic structures and their environmental effects, focusing on sustainable water management practices.
Physica speculatio
"Physica Speculatio" is a work attributed to the 17th-century philosopher and scientist, Johannes Kepler. Although the title could be translated to "Speculations on Physics," it is not as widely known as some of Kepler's other works, such as "Astronomia Nova," "Harmonice Mundi," or "Lunar Astronomy.