Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Incremental and Decremental Secret Key Agreement   We study the rate of change of the multivariate mutual information among a
set of random variables when some common randomness is added to or removed from
a subset. This is formulated more precisely as two new multiterminal secret key
agreement problems which ask how one can increase the secrecy capacity
efficiently by adding common randomness to a small subset of users, and how one
can simplify the source model by removing redundant common randomness that does
not contribute to the secrecy capacity. The combinatorial structure has been
clarified along with some meaningful open problems.

11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ
7
The categories of this paper are: hep-th