Anders Johan Lexell was a notable Swedish mathematician and astronomer, born on March 8, 1740, in Åbo, Finland, and he passed away on November 11, 1784. He is best known for his work in celestial mechanics and his contributions to the understanding of planetary motions. Lexell is particularly noted for developing Lexell's theorem concerning the perturbation of orbits, which is significant in the field of astronomy and the study of celestial bodies.

Alicia Boole Stott was an Irish mathematician known for her work in geometry and her contributions to the field of mathematics during the late 19th and early 20th centuries. Born in 1860 in Dublin, Ireland, she made significant advancements in the study of higher-dimensional polytopes and was particularly interested in the geometry of four-dimensional spaces. Stott is best known for her work in the visualization of complex geometric figures, including the regular polytopes in four dimensions.

Alexander Nabutovsky is known as a mathematician, specifically recognized for his work in the fields of topology and geometry. He has contributed to various areas of mathematical research, including the study of low-dimensional topology. His work often involves the examination of properties of manifolds and their relationships in different dimensions.

Alan Weinstein is likely a reference to an accomplished mathematician and physicist known for his work in areas such as mathematics, theoretical physics, and particularly in relation to symplectic geometry.

As of my last update in October 2023, Aissa Wade does not appear to be a widely recognized public figure, concept, or term. It's possible that it could refer to a specific individual, a character in a work of fiction, or a niche topic that hasn't gained significant attention.

Aida Yasuaki appears to be a lesser-known figure and not widely recognized in popular culture or media. It's possible that he could be a contemporary artist, a character in literature or film, or perhaps an emerging public figure in a specific field.

Adam Friedrich Zürner (1630-1698) was a notable German mathematician and astronomer. He is particularly recognized for his work in the field of astronomical instruments and cartography, contributing to the understanding of celestial mechanics and the improvement of astronomical observations during the 17th century. Zürner is also known for publishing works that detailed his observations and findings, which were significant for the scientific community of his time.

A. Harry Wheeler, also known as Albert Harry Wheeler, was an American mathematician and a prominent figure in the fields of topology and algebraic topology. He is particularly well-known for his work on the foundations of topology and his contributions to various areas of mathematical theory, including the study of continuous functions and topological spaces. Wheeler's contributions were significant in the development of certain mathematical concepts and he was involved in educational activities, contributing to the advancement of mathematics through teaching and research.

"Medieval geometers" typically refers to mathematicians and scholars during the Middle Ages who contributed to the field of geometry, building on the foundations established by ancient Greek mathematicians like Euclid, Archimedes, and others. The medieval period, roughly spanning from the 5th to the late 15th centuries, saw a mix of continued study in geometry as well as the transmission of knowledge from the Islamic Golden Age.

Hyperbolic geometers are mathematicians or researchers who specialize in hyperbolic geometry, which is a non-Euclidean geometry characterized by its unique properties and structures. In hyperbolic geometry, the parallel postulate of Euclidean geometry does not hold. Specifically, through a given point not on a line, there are infinitely many lines that do not intersect the given line, in contrast to Euclidean space, where there is exactly one such line.

The term "French geometers" generally refers to mathematicians and geometers from France who have made significant contributions to the field of geometry. French geometers have historically played a crucial role in the development of various branches of mathematics, especially geometry. Prominent figures in the history of French geometry include: 1. **René Descartes** - Known for Cartesian geometry, which involves the use of coordinate systems to describe geometric shapes algebraically.

"British geometers" typically refers to mathematicians or mathematicians from the UK who have made significant contributions to the field of geometry. Geometry is a branch of mathematics that deals with the properties, measurements, and relationships of points, lines, angles, surfaces, and solids. Historically, several British mathematicians have been prominent in the development of geometry.

Arithmetic geometry is a branch of mathematics that merges aspects of algebraic geometry and number theory. It primarily studies the solutions of polynomial equations and their properties over different fields, particularly over number fields and algebraic varieties. Here are some key concepts related to arithmetic geometry: 1. **Algebraic Varieties**: These are geometric objects defined by polynomial equations. They serve as the basic objects of study in algebraic geometry.

Ancient Greek geometers refer to mathematicians and scholars from ancient Greece who contributed to the field of geometry, which is the branch of mathematics dealing with shapes, sizes, and the properties of space. Some of the most notable figures in this context include: 1. **Euclid**: Often referred to as the "father of geometry," Euclid is best known for his work *Elements*, which systematically compiled and organized the knowledge of geometry of his time.

The World Geodetic System (WGS) is a global reference system that provides a framework for geospatial data and mapping. The most widely used version is the WGS 84 (World Geodetic System 1984), which is employed by the Global Positioning System (GPS) and serves as a standard for cartography, geodesy, and navigation.

A virtual globe is a three-dimensional computer-generated representation of Earth that allows users to visually explore geographic data and information. It typically provides a detailed view of the planet's surface, including terrain, bodies of water, political boundaries, and geographic features such as mountains and valleys. Virtual globes can also include layers of data that can be toggled on or off, displaying various information such as satellite imagery, weather patterns, population density, and more.

Vincenty's formulae are a set of mathematical formulas used to calculate the distance between two points on the surface of an ellipsoidal model of the Earth, which takes into account the Earth's flattening and provides more accurate results than simpler spherical formulas. They are particularly useful for geodesic calculations in geodesy, cartography, and navigation.

Very-long-baseline interferometry (VLBI) is a type of astronomical technique used to achieve high angular resolution imaging of radio sources. It involves the use of multiple radio telescopes located at different geographical locations, often thousands of kilometers apart, which work together to observe the same astronomical object simultaneously.

Vertical deflection refers to the displacement or movement of a structure, such as a beam, bridge, or any structural component, in the vertical direction due to applied loads or environmental factors. It is an important consideration in structural engineering, as excessive vertical deflection can affect the performance, safety, and serviceability of the structure.