Carlo Severini is not widely recognized in general knowledge or notable figures. However, there is a Carlo Severini who is known as an Italian mathematician, particularly in the fields of complex analysis and mathematical physics.

A Carmichael number is a composite number \( n \) that satisfies Fermat's little theorem for all integers \( a \) that are coprime to \( n \). Specifically, Fermat's little theorem states that if \( p \) is a prime number, then for any integer \( a \) such that \( a \) is not divisible by \( p \), \[ a^{p-1} \equiv 1 \ (\text{mod} \ p).

Carlos Lousto is an astrophysicist known for his work in the field of gravitational wave research, particularly related to black hole mergers and numerical relativity. He has been affiliated with institutions like the University of Maryland and has contributed to the understanding of the dynamics of black holes and the generation of gravitational waves through computational simulations.

Carmen Magallón is a Spanish physicist known for her work in the field of nuclear physics and for her contributions to the advancement of science communication and education. She has actively engaged in promoting scientific literacy and the importance of science in society.

The Carmichael function, denoted as \( \lambda(n) \), is a function that gives the least positive integer \( m \) such that \( a^m \equiv 1 \pmod{n} \) for all integers \( a \) that are coprime to \( n \). In other words, it is the smallest exponent for which every number coprime to \( n \) has a power that is congruent to 1 modulo \( n \).

George F. C. Griss is a noted figure in the field of computer science and engineering, particularly recognized for his contributions to the area of software engineering and system architecture. However, specific details about his work and accomplishments can vary depending on the context being referred to.

The Carré du champ operator is a mathematical operator that arises in the study of functional inequalities, Markov processes, and the analysis of Dirichlet forms in the context of stochastic processes, particularly in the framework of the theory of diffusion.

A Carroll diagram is a type of graphic organizer used to classify or sort objects or ideas based on two or more attributes. It typically consists of a grid with two axes that represent different categories or criteria. The intersections of these axes help to categorize items into different sections or quadrants based on the attributes being assessed. For example, a simple Carroll diagram might classify animals based on whether they can fly or swim.

Cartan's lemma is a concept in potential theory, particularly associated with the study of harmonic functions and the behavior of positive harmonic functions or subharmonic functions. The lemma is named after the French mathematician Henri Cartan.

The Cascadia Channel refers to a geological feature in the Pacific Ocean, specifically related to the region along the Cascadia Subduction Zone, which runs from northern California up through Oregon and Washington to British Columbia, Canada. This subduction zone is characterized by the convergence of the Juan de Fuca Plate and the North American Plate. The Cascadia Channel itself may refer to a specific underwater valley or trench in this region, which can play a role in geological and oceanographic processes.

"Catasterismi" refers to a collection of ancient Greek writings attributed to the scholar and poet Eratosthenes, who lived in the 3rd century BCE. The term itself is derived from the Greek word "catasterismoi," which means "transformations into stars." The work is a compilation of myths and fables explaining the origins of various constellations and celestial bodies in the night sky.

Pseudoanalytic functions are a generalization of analytic functions that arise in the context of complex analysis and partial differential equations. They can be defined using the framework of pseudoanalytic function theory, which is an extension of classical analytic function theory. In classical terms, a function is considered analytic if it is locally represented by a convergent power series. Pseudoanalytic functions, however, are defined by more general conditions that relax some of the requirements of analyticity.

In mathematics, specifically in the field of lattice theory and order theory, a **pseudocomplement** is a concept that applies to certain types of lattices, specifically bounded lattices.

Catherine Constable may refer to different individuals depending on the context, but as of my last knowledge update in October 2023, there is no widely known figure by that name in popular culture, politics, or significant historical events.

Catherine Hirshfeld Crouch is a notable physicist known for her contributions to experimental condensed matter physics and materials science. She is recognized for her work on various topics, including the study of complex materials, interfaces, and nanostructures. Crouch has held positions in academia and has contributed to the advancement of scientific understanding in her field.

George M. Whitesides is a prominent American chemist known for his extensive contributions to the fields of chemistry, materials science, and nanotechnology. He is a Professor of Chemistry at Harvard University and has been recognized for his work in various areas, including surface science, organic chemistry, and polymer science. Whitesides has authored numerous scientific papers and holds many patents. His research has explored topics such as self-assembly, the development of soft materials, and the integration of chemistry with biology.

Cavity optomechanics is a field of study that investigates the interaction between light (photons) and mechanical vibrations (phonons) within an optical cavity. This interaction can lead to a variety of fascinating phenomena and has significant implications for both fundamental physics and practical applications. At its core, cavity optomechanics typically involves a high-finesse optical cavity, which is a structure designed to confine light, such as a pair of mirrors that reflect light back and forth.

George Pake was an American physicist and a prominent figure in the field of science and technology. He is best known for his role in the development of the laser and for his leadership in various scientific institutions. Pake served as the director of the Xerox Palo Alto Research Center (PARC) during the 1970s, where he oversaw groundbreaking research in computing, networking, and other technologies that laid the foundation for many modern innovations.