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pivoxa15
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Does the notion of continuity exist in modern algebra?
If so how do they arise?
If so how do they arise?
HallsofIvy said:I would be inclined to say that all of those many situations in which you have both continuity (i.e. topology) and an algebraic structure are "analysis" rather than just algebra. In my (probably idiosycratic) opinion, analysis is the combination of algebra with topology.
matt grime said:How many angels can dance on the head of a pin? More semantic hair splitting. Go, on, pixova, define 'pure algebra'...
mathwonk said:a basic philosophy is that to understand a thing, one wants to construct as many invariants of it as possible. so to understand a ring, one can consider obvious invariants such as its cardinality, or its group of units.
but one can also look at more complicated invariants such as the associated affine scheme, or in the case of a local ring, its completion wrt the metric defined above.
for the local ring of a smooth point on an algebraic variety this leads to a proof of the theorem in pure algebra that the ring is a ufd because its completion is so.
The Galois group is profinite, its topology plays a criticial role in the theory.pivoxa15 said:Galois theory is pure algebra.
Why not? Yes, I am playing devil's advocate, but I'd like you to examine your own preconceptions about mathematics.pivoxa15 said:Whereas topics in algebraic topology is not pure algebra.
Continuity in modern algebra refers to the idea that a function or structure remains unchanged or consistent over a given domain or set of inputs. In other words, small changes in the input result in small changes in the output. This concept is essential in understanding the behavior and properties of algebraic structures.
The concept of continuity in modern algebra can be traced back to the work of mathematicians such as Georg Cantor, Richard Dedekind, and Bernhard Riemann in the 19th century. These mathematicians explored the idea of continuity in various mathematical contexts, including the real numbers and complex analysis.
Continuity is applied in modern algebra in various ways. It is used to define and study important algebraic structures such as groups, rings, and fields. It is also used to prove theorems and properties of these structures, providing a deeper understanding of their behavior and relationships.
Continuity has many real-world applications, particularly in fields such as physics, engineering, and economics. For example, the concept of continuity is used in the study of differential equations, which are essential in modeling and understanding physical phenomena. It is also used in optimization problems in economics and engineering.
Continuity is closely related to other important concepts in modern algebra, such as differentiability and uniform continuity. These concepts build upon the idea of continuity and provide a more nuanced understanding of how functions behave over a given domain. They are also used in the study of more advanced algebraic structures, such as topological groups and fields.