nash bargaining theory: axiommatic and strategic approaches Flashcards
(50 cards)
what is the formalisation of the bargaining theory?
what is the goal of axiomatic bargaining theory?
what is Nashs definition of bargaining solution?
a function such that for each problem in the class it chooses an alternative in that problem. the solution outcome is a binding agreement between agents
what is the class of Nash two person bargaining problems described as?
what is the nash solution geographically with a disagreement point of 0,0?
what occurs in a nash demand game (NDG)
what approach does the Nash program take?
it uses the strategic (noncooperative) approach to provide noncooperative foundations for axiomatic (cooperative) bargaining solutions
it intends to bridge the gap between the noncooperative and cooperative counterparts of game theory
what does the cooperative bargaining theory do
what does the strategic (noncooperative) approach do?
what is the advantage of the axiomatic approach?
how does the strategic and cooperative approach complement each other?
what is an axiom?
An axiom is the mathematical expression of our intuition of how
a solution should behave in certain situations
what are the two categories of axioms?
what is an axiomatic characterisation?
what is a comprehensive problem?
comprehensive
problems: for a comprehensive problem, if a point x is in S, then so is any point y with d ≤ y ≤ x. (The Pareto frontier is never upward
sloping anywhere.)
comprehensiveness comes from free disposal of utility
what is a strictly comprehensive problem?
what is the formal definition of a bargaining solution?
what are the four axioms laid out by nash for a bargaining solution?
pareto optimality, symmetry (SYM), Scale Invariance (SI) and
Independence of Irrelevant Alternatives (IIA)
what is the symmetry axiom?
Symmetry (SYM): if a problem (S, d) is symmetric with respect to the
45◦ line, its solution outcome should be on that line.
what type of axiom is symetry?
it is a punctual axiom
what is the pareto optimality axiom?
Pareto-optimality (PO): there should be no alternative in S that
even weakly dominated the solution outcome (i.e., there should
be no alternative in S at which one agent’s payoff is at least as
large as its solution outcome payoff, and at least one agent’s payoff
is larger than that).
* In other words, the solution outcome should be on ∂S.
* From a normative viewpoint, it is difficult to see why Pareto-
optimality should not be required.
what type of axioms is the pareto optimality axiom?
it is a punctual axiom
what is the minimal amount of axioms to find an outcome of a symmetric?
two punctual axioms, symmetrty and pareto optimality can determine the outcome of any symmetric
what type of axiom is scale invarianace?
scale invariance is an relational axiom