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In mathematics a stack or 2-sheaf is, roughly speaking, a sheaf that takes values in categories rather than sets. Stacks are used to formalise some of the main constructions of descent theory , and to construct fine moduli stacks when fine moduli spaces do not exist.
The Stacks Project is an open source collaborative mathematics textbook writing project with the aim to cover "algebraic stacks and the algebraic geometry needed to define them".
In mathematics education, ethnomathematics is the study of the relationship between mathematics and culture. [1] Often associated with "cultures without written expression", [2] it may also be defined as "the mathematics which is practised among identifiable cultural groups". [3]
Shqip; Sicilianu ... Mathematics is a field of study that discovers and organizes methods, theories and theorems that are developed and proved for the needs of ...
The Academy of Sciences of Albania (Albanian: Akademia e Shkencave e Shqipërisë), founded in 1972, is the most important scientific institution in Albania. [1] In the 1980s, several research institutes began at the University of Tirana were transferred to the Academy's jurisdiction. [ 2 ]
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Stack (geology), a large vertical column of rock in the sea; Stack (mathematics), a sheaf that takes values in categories rather than sets; Algebraic stack, a special kind of stack commonly used in algebraic geometry Stacks Project, an open source collaborative mathematics textbook writing project