Stratification refers to the arrangement or classification of something into different layers, levels, or strata. This concept can be applied in various fields, such as: 1. **Sociology**: Social stratification pertains to the hierarchical arrangement of individuals or groups in society based on factors such as wealth, power, education, race, and social status. It highlights inequalities and the social structures that cause different levels of access to resources and opportunities.

A **topological space** is a fundamental concept in the field of topology, which is a branch of mathematics that studies properties of space that are preserved under continuous transformations. A topological space is defined as an ordered pair \( (X, \tau) \), where: - \( X \) is a set, often called the **underlying set**.

"Watches" generally refer to small timekeeping devices worn on the wrist, designed not only to tell time but also to offer various features and functionalities. Here's a more detailed overview: 1. **Types of Watches**: - **Analog Watches**: Traditional watches that use hands to show time on a dial with hour and minute markings. - **Digital Watches**: Display time in numerical form, often with additional features like alarms, stopwatches, and backlit displays.

Gerhard Wagner is a physicist known for his contributions to various fields within physics, including quantum mechanics and condensed matter physics. However, detailed information about specific research, publications, or achievements would be essential for a more comprehensive understanding of his work and impact in the field.

Computing is a peer-reviewed academic journal that covers research and developments in the field of computer science and computing. It typically encompasses a wide range of topics, including but not limited to algorithms, software engineering, computer systems, artificial intelligence, and information technology. The journal serves as a platform for researchers to publish their findings, share insights, and contribute to the body of knowledge within the computing discipline.

Gertrude Ehrlich does not seem to be a widely recognized figure in public knowledge, literature, science, or popular culture based on general information up to October 2023. It's possible that she could be a private individual, a local figure, or someone recognized in a specific field or context that hasn't gained broader attention.

The cross-ratio is a concept from projective geometry often used in various mathematical fields, including geometry and complex analysis.

The term "Cone algorithm" can refer to different concepts in various fields, including computer science, mathematics, optimization, and computational geometry. However, one common interpretation relates to methods used in optimization and linear programming, particularly in the context of cone programming or conic optimization. ### Cone Programming **Cone programming** is a generalization of linear programming where the feasible region is defined by a convex cone. A convex cone is a set that is closed under positive scalar multiplication and addition.

Uniform spaces are a generalization of metric spaces that provide a framework for discussing notions of uniformity and convergence without necessarily relying on a notion of distance. The primary goal of uniform spaces is to formalize and study concepts such as uniform continuity, Cauchy sequences, and completeness in a more abstract setting. ### Definition A **uniform space** is defined using a pre-uniform structure.