Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dual continuous $K$-Frames in Hilbert spaces   Frame theory is recently an active research area in mathematics, computer
science and engineering with many exciting applications in a variety of
different fields. This theory has been generalized rapidly and various
generalizations of frames in Hilbert spaces. In this papers we study the notion
of dual continuous $K$-frames in Hilbert spaces. Also we etablish some new
properties.

25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat