Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Unbeatable Tit-for-Tat as a Zero-Determinant Strategy   Tit-for-Tat strategy is a strategy in repeated two-player symmetric games
which imitates the previous action of the opponent. We show that the
Tit-for-Tat strategy is a zero-determinant strategy, which unilaterally
equalizes the expected payoffs of two players, if and only if the stage game is
a potential game. Because it has been known that this condition is equivalent
to the condition that the Tit-for-Tat strategy is unbeatable, our results
suggest some relation between unbeatable property and the concept of
zero-determinant strategy.

33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph