Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The emergence of the concept of filter in topological categories   In all approaches to convergence where the concept of filter is taken as
primary, the usual motivation is the notion of neighborhood filter in a
topological space. However, these approaches often lead to spaces more general
than topological ones, thereby calling into question the need to use filters in
the first place. In this note we overturn the usual view and take as primary
the notion of convergence in the most general context of centered spaces. In
this setting, the notion of filterbase emerges from the concept of germ of a
function, while the concept of filter emerges from an amnestic modification of
the subcategory of centered spaces admitting germs at each point.

36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys