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Preferences and Utility. X : set of alternatives (choice set or domain
Preferences and Utility. X : set of alternatives (choice set or domain

... so that x00 must also be optimal i.e., x00 2 x(p; w): Thus, x(p; w) is a convex set. ...
pdf format
pdf format

... each x, y ∈ ω , and satisfies the recursive definition of + in terms of 0 and successor (S ). Left as homework are similar theorems for multiplication and exponentiation. Once have definitions for addition, multiplication, and exponentiation, we can define many natural set of the non-negative intege ...
Pareto Efficiency
Pareto Efficiency

... Individuals are rational in pursuing the maximization of their welfare Thus voluntary exchange is the only way to pursue social welfare and allocate resources and there must be unanimity in agreeing any socioeconomic change. Note that the PE condition accepts whatever distribution of income arises o ...
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The Kronecker-Weber Theorem
The Kronecker-Weber Theorem

Session 3: Utilitarianism
Session 3: Utilitarianism

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and the uniform convergence topology.
and the uniform convergence topology.

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Games in Preference Form and Preference Rationalizability
Games in Preference Form and Preference Rationalizability

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Fraïssé`s conjecture in Pi^1_1-comprehension
Fraïssé`s conjecture in Pi^1_1-comprehension

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Preference Planning for Markov Decision Processes
Preference Planning for Markov Decision Processes

... Boutilier et al. 2004), algorithms for designing preferencebased planners corresponding to the different preference languages, or algorithms to increase planning efficiency (Bacchus and Kabanza 2000; Edelkamp 2006; Sohrabi, Baier, and McIlraith 2009; Tu, Son, and Pontelli 2007; Baier, Bacchus, and M ...
DEPARTEMENT D`ECONOMIE
DEPARTEMENT D`ECONOMIE

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Prof. Halpern's notes

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Democratic Elections in Faulty Distributed Systems
Democratic Elections in Faulty Distributed Systems

... Arrow’s theorem, an important result on this topic, shows impossibility of elections under some specific requirements [3]. Yet, the confluence of democratic elections (with more than two candidates) and distributed protocols has not been explored to the best of our knowledge. Involvement of Byzantin ...
Portfolio diversification and internalization of production externalities through majority voting Hervé Crès
Portfolio diversification and internalization of production externalities through majority voting Hervé Crès

... voting appear as natural and legitimate alternatives to the market mechanism. Whether such collective-decision mechanisms can implement efficient allocations is a question that has been studied since Bowen (1943). In the latter, Bowen shows that if the voters’ marginal rates of substitution are symmet ...
Induction and Decision Trees
Induction and Decision Trees

... Human Judgment and Utility (III) •The point is that it is very hard to model an automatic agent that behaves like a human (back to the Turing test) •However, the utility theory does give some formal way of model decisions and as such is used to support user’s decisions •Same can be said for similar ...
Even More Brownian Motion
Even More Brownian Motion

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Other Portfolio Selection Models

...  Define efficient sets under alternative assumptions about general characteristics of investor’s utility function – Three stronger assumptions • First Order: non-satiation • Second Order: risk averse (includes first) • Third Order: decreasing absolute risk aversion (includes previous two) ...
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EXISTSENVYFREE.PDF

... In a simplerversionof theproblem,a divisionis regardedas "fair"ifall people("players") are satisfiedthateach has receivedat least l/n of thecake. For thisversion,thereis a simple and practicalsolution,attributed by Steinhaus[1] to Banach and Knaster.MartinGardner describesthecase n=3 in his newestbo ...
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Slides [pptx]

... • A simple example. Assume 2 generations. The news about the effect of climate change on the second generation can either be “good” or “bad.” At an initial point, the decisionmaker assigns each equal probability. She then learns and, if “bad” news, can mitigate the bad effects (at some cost to the c ...
Preferences and Utility - UCLA Economics Homepage
Preferences and Utility - UCLA Economics Homepage

... is bigger and slower than a BMW, so it is unclear which the agent prefers. The completeness axiom says these preferences are unreasonable: after examining the SUV and BMW, the agent will have a preference between the two. Third, suppose that the agent prefers a BMW over a Prius because it is faster, ...
Practice 7-5: PROPORTIONS IN TRIANGLES
Practice 7-5: PROPORTIONS IN TRIANGLES

... intersects the other two sides, then it divides those sides proportionally. COROLLARY: If three parallel lines intersect two transversals, then the segments intercepted on the transversals are proportional. The  -- Bisector Theorem states that if a ray bisects an  of a , then it divides the oppo ...
I Introduction to the Nature of Economics
I Introduction to the Nature of Economics

... understands that their chance for survival is reduced if she or he is not a member of the community. A behavior that is not sanctioned by the community (e.g. theft, murder, or even stating an idea that is not shared by others, etc) may be result in the individual being ostracized and expelled from t ...
Lean Theorem Proving: Maximal Efficiency from Minimal - IT-SEC
Lean Theorem Proving: Maximal Efficiency from Minimal - IT-SEC

... sed on experience in implementing (complex) deduction systems, only the most important and ef- 5 prove(Lit,[Next|UnExp],Lits,FreeV,VLim) :prove(Next,UnExp,[Lit|Lits],FreeV,VLim). ficient techniques and methods are implemented. Satchmo [4] can be regarded the earliest application of lean theorem prov ...
Lean Theorem Proving: Maximal Efficiency from Minimal Means
Lean Theorem Proving: Maximal Efficiency from Minimal Means

... sed on experience in implementing (complex) deduction systems, only the most important and ef- 5 prove(Lit,[Next|UnExp],Lits,FreeV,VLim) :prove(Next,UnExp,[Lit|Lits],FreeV,VLim). ficient techniques and methods are implemented. Satchmo [4] can be regarded the earliest application of lean theorem prov ...
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Arrow's impossibility theorem

In social choice theory, Arrow’s impossibility theorem, the General Possibility Theorem, or Arrow’s paradox, states that, when voters have three or more distinct alternatives (options), no rank order voting system can convert the ranked preferences of individuals into a community-wide (complete and transitive) ranking while also meeting a pre-specified set of criteria. These pre-specified criteria are called unrestricted domain, non-dictatorship, Pareto efficiency, and independence of irrelevant alternatives. The theorem is often cited in discussions of election theory as it is further interpreted by the Gibbard–Satterthwaite theorem.The theorem is named after economist Kenneth Arrow, who demonstrated the theorem in his doctoral thesis and popularized it in his 1951 book Social Choice and Individual Values. The original paper was titled ""A Difficulty in the Concept of Social Welfare"".In short, the theorem states that no rank-order voting system can be designed that always satisfies these three ""fairness"" criteria: If every voter prefers alternative X over alternative Y, then the group prefers X over Y. If every voter's preference between X and Y remains unchanged, then the group's preference between X and Y will also remain unchanged (even if voters' preferences between other pairs like X and Z, Y and Z, or Z and W change). There is no ""dictator"": no single voter possesses the power to always determine the group's preference.Voting systems that use cardinal utility (which conveys more information than rank orders; see the subsection discussing the cardinal utility approach to overcoming the negative conclusion) are not covered by the theorem. The theorem can also be sidestepped by weakening the notion of independence. Arrow rejected cardinal utility as a meaningful tool for expressing social welfare, and so focused his theorem on preference rankings.The axiomatic approach Arrow adopted can treat all conceivable rules (that are based on preferences) within one unified framework. In that sense, the approach is qualitatively different from the earlier one in voting theory, in which rules were investigated one by one. One can therefore say that the contemporary paradigm of social choice theory started from this theorem.
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