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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".
A table of constants that includes the same approximation of the square root of 2 as YBC 7289 is the tablet YBC 7243. The constant appears on line 10 of the table along with the inscription, "the diagonal of a square". [2] [4] [5] The mathematical significance of this tablet was first recognized by Otto E. Neugebauer and Abraham Sachs in 1945.
The pages in this category are redirects from terms in the Albanian language.The language code in the |1= parameter below is essential to populate this category. To add a redirect to this category, place {{Rcat shell|{{R from alternative language|1=sq|2=(the < to > ISO 639 name code)}}}} on the second new line (skip a line) after #REDIRECT [[Target page name]].
Stack machine, an architecture centered around a pushdown stack; Protocol stack, a particular software implementation of a computer networking protocol suite; Solution stack, a group of software systems, increasing in abstraction from bottom to top; Stack-based memory allocation, a memory allocation scheme based on the principle of "last in ...
A stack may be implemented as, for example, a singly linked list with a pointer to the top element. A stack may be implemented to have a bounded capacity. If the stack is full and does not contain enough space to accept another element, the stack is in a state of stack overflow. A stack is needed to implement depth-first search.
Petro Zheji (18 October 1929 – 14 March 2015 [1]) was an Albanian linguist, translator, philosopher and author.He lived and worked intellectually in Tirana. [2] As a polyglot, he was deeply knowledgeable in the Italian, French, English, Spanish, German, Russian, Hebrew, Sanskrit, Ancient Greek, and Latin languages. [1]
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