Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On (n,d)-perfect rings   In this paper, we introduce the notion of "(n,d)-perfect rings" which is in
some way a generalization of the notion of "S-rings". After we give some basic
results of this rings and we survey the relationship between "A(n) property"
and "(n,d)-perfect property". Finally, we investigate the "(n,d)-perfect
property" in pullback rings.

7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol