Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Characterizations of almost greedy and partially greedy bases   We shall present new characterizations of partially greedy and almost greedy
bases. A new class of basis (which we call reverse partially greedy basis)
arises naturally from these characterizations of partially greedy bases. We
also give characterizations for $1$-partially greedy and $1$-reverse partially
greedy bases.

12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex