| Paraleptamphopidae | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Crustacea |
| Class: | Malacostraca |
| Superorder: | Peracarida |
| Order: | Amphipoda |
| Superfamily: | Gammaroidea |
| Family: | Paraleptamphopidae Bousfield, 1977 |
| Genera | |
| |
Paraleptamphopidae is a family of amphipod crustaceans, containing three genera. [1] Paraleptamphopus and Ringanui are both endemic to New Zealand, but Rudolphia lives in Chile. [2]
The number e, also known as Euler's number, is a mathematical constant approximately equal to 2.71828 that can be characterized in many ways. It is the base of natural logarithms. It is the limit of (1 + 1/n)n as n approaches infinity, an expression that arises in the study of compound interest. It can also be calculated as the sum of the infinite series
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In mathematics, two quantities are in the golden ratio if their ratio is the same as the ratio of their sum to the larger of the two quantities. Expressed algebraically, for quantities and with ,
Information theory is the mathematical study of the quantification, storage, and communication of information. The field was originally established by the works of Harry Nyquist and Ralph Hartley, in the 1920s, and Claude Shannon in the 1940s. The field, in applied mathematics, is at the intersection of probability theory, statistics, computer science, statistical mechanics, information engineering, and electrical engineering.
In statistics, a normal distribution or Gaussian distribution is a type of continuous probability distribution for a real-valued random variable. The general form of its probability density function is
The number π is a mathematical constant that is the ratio of a circle's circumference to its diameter, approximately equal to 3.14159. The number π appears in many formulae across mathematics and physics. It is an irrational number, meaning that it cannot be expressed exactly as a ratio of two integers, although fractions such as are commonly used to approximate it. Consequently, its decimal representation never ends, nor enters a permanently repeating pattern. It is a transcendental number, meaning that it cannot be a solution of an equation involving only sums, products, powers, and integers. The transcendence of π implies that it is impossible to solve the ancient challenge of squaring the circle with a compass and straightedge. The decimal digits of π appear to be randomly distributed, but no proof of this conjecture has been found.
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In mathematics, the Taylor series or Taylor expansion of a function is an infinite sum of terms that are expressed in terms of the function's derivatives at a single point. For most common functions, the function and the sum of its Taylor series are equal near this point. Taylor series are named after Brook Taylor, who introduced them in 1715. A Taylor series is also called a Maclaurin series when 0 is the point where the derivatives are considered, after Colin Maclaurin, who made extensive use of this special case of Taylor series in the mid-18th century.
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The Baikonur Cosmodrome is a spaceport operated by Russia within Kazakhstan. Located in the Kazakh city of Baikonur, it is the world's first spaceport to be used for orbital and human launches. In terms of area, it is the largest operational space launch facility. All Russian crewed spaceflights are launched from Baikonur.
Radioactive decay is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered radioactive. Three of the most common types of decay are alpha, beta, and gamma decay, all of which involve emitting particles. The weak force is the mechanism that is responsible for beta decay, while the other two are governed by the electromagnetism and nuclear force.
Bone Thugs-n-Harmony is an American hip hop group composed of rappers Bizzy Bone, Wish Bone, Layzie Bone, Krayzie Bone, and Flesh-n-Bone. Formed in 1991 in Cleveland, Ohio, the group signed to fellow American rapper Eazy-E‘s Ruthless Records in late 1993, on which they debuted with their EP Creepin on ah Come Up the next year. The EP included their breakout hit single "Thuggish Ruggish Bone". In 1995, the group released its second album E. 1999 Eternal, which included hits "1st of tha Month" and "East 1999". Their hit song "Tha Crossroads", a tribute to then-recently deceased mentor Eazy-E, won a Grammy Award in 1997.
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Gammaridea is one of the suborders of the order Amphipoda, comprising small, shrimp-like crustaceans. Until recently, in a traditional classification, it encompassed about 7,275 (92%) of the 7,900 species of amphipods described by then, in approximately 1,000 genera, divided among around 125 families. That concept of Gammaridea included almost all freshwater amphipods, while most of the members still were marine.
Paraleptamphopus is a genus of amphipods in the family Paraleptamphopidae endemic to New Zealand. The first species to be described was Calliope subterraneus which was named by Charles Chilton in 1882. George M. Thomson described a second species in 1885, as Pherusa coerulea. Although no other species have yet been formally described, it is thought that many more undescribed species exist.
In probability theory and statistics, the Poisson distribution is a discrete probability distribution that expresses the probability of a given number of events occurring in a fixed interval of time or space if these events occur with a known constant mean rate and independently of the time since the last event. It is named after French mathematician Siméon Denis Poisson. The Poisson distribution can also be used for the number of events in other specified interval types such as distance, area, or volume. It plays an important role for discrete-stable distributions.
Rudolphia is a genus of amphipods in the family Paraleptamphopidae found in Chile.
Gammaroidea is a superfamily of crustaceans in the order Amphipoda.
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