They first considered a simple decision problem comprised by 3 alternatives and 2 criteria.
That new state will then affect the decision problem from time 1 on.
The whole future decision problem appears inside the square brackets on the right.
An example of a decision problem is the following.
That's a yes/no question, so this is a decision problem.
Formally, a decision problem is a subset of the natural numbers.
In contrast, the decision problem "is N a composite number?"
The decision problem then is to decide whether such a solution exists or not.
The best known work of his Soviet period is on the classical decision problem.
A decision problem is represented as a set A of natural numbers (or strings).