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In mathematics, a characteristic class is a way of associating to each principal bundle of X a cohomology class of X. The cohomology class measures the extent to which the bundle is "twisted" and whether it possesses sections .
A social class or social stratum is a grouping of people into a set of hierarchical social categories, [1] the most common being the working class, middle class, and upper class. Membership of a social class can for example be dependent on education, wealth, occupation, income, and belonging to a particular subculture or social network. [2]
The median wealth of married couples exceeds that of single individuals, regardless of gender and across all age categories. [11]It is impossible to understand people's behavior…without the concept of social stratification, because class position has a pervasive influence on almost everything…the clothes we wear…the television shows we watch…the colors we paint our homes in and the ...
Class stratification is a form of social stratification in which a society is separated into parties whose members have different access to resources and power. An economic, natural, cultural, religious, interests and ideal rift usually exists between different classes.
In sociology, the upper middle class of the United States is the social group constituted by higher-status members of the middle class in American society. This is in contrast to the term lower middle class, which refers to the group at the opposite end of the middle class scale. There is considerable debate as to how the upper middle class ...
A class can be defined either by extension (specifying members), or by intension (specifying conditions), using what is called in some ontology languages like OWL. According to the type–token distinction , the ontology is divided into individuals, who are real worlds objects, or events, and types, or classes, who are sets of real world objects.
Class consciousness is an aspect of Marxist theory, referring to the self-awareness of social classes, the capacity to act in its own rational interests, or measuring the extent to which an individual is conscious of the historical tasks their class (or class allegiance) sets for them.
The concept describes the formation of the shared character structure of the people of a society or a social class according to their way of life and the socially typical expectations and functional requirements regarding socially adaptive behavior. Social character is essentially adaptive to the dominant mode of production in a society.