second fundamental theorem of welfare economics
E535938
The second fundamental theorem of welfare economics states that, under certain ideal conditions, any Pareto efficient allocation of resources can be achieved as a competitive market equilibrium given an appropriate redistribution of initial endowments.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Second Welfare Theorem | 2 |
| second fundamental theorem of welfare economics canonical | 1 |
| second welfare theorem | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5544575 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: second fundamental theorem of welfare economics Context triple: [Pareto efficiency, relatedConcept, second fundamental theorem of welfare economics]
-
A.
First Welfare Theorem
The First Welfare Theorem is a fundamental result in economics stating that, under certain ideal conditions, competitive market equilibria are Pareto efficient.
-
B.
welfare economics
Welfare economics is a branch of economics that evaluates how the allocation of resources affects social well-being, often using ethical and efficiency criteria to assess and guide public policy.
-
C.
Pareto efficiency
Pareto efficiency is an economic concept describing an allocation of resources where no individual can be made better off without making someone else worse off.
-
D.
Hicks–Kaldor compensation criterion
The Hicks–Kaldor compensation criterion is an economic efficiency test stating that a policy change is desirable if those who gain could in principle compensate those who lose and still be better off, regardless of whether compensation actually occurs.
-
E.
The Economics of Welfare
The Economics of Welfare is a foundational 1920 economics treatise by Arthur Cecil Pigou that systematically develops welfare economics and the concept of externalities to analyze the role of government in correcting market failures.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: second fundamental theorem of welfare economics Target entity description: The second fundamental theorem of welfare economics states that, under certain ideal conditions, any Pareto efficient allocation of resources can be achieved as a competitive market equilibrium given an appropriate redistribution of initial endowments.
-
A.
First Welfare Theorem
The First Welfare Theorem is a fundamental result in economics stating that, under certain ideal conditions, competitive market equilibria are Pareto efficient.
-
B.
welfare economics
Welfare economics is a branch of economics that evaluates how the allocation of resources affects social well-being, often using ethical and efficiency criteria to assess and guide public policy.
-
C.
Pareto efficiency
Pareto efficiency is an economic concept describing an allocation of resources where no individual can be made better off without making someone else worse off.
-
D.
Hicks–Kaldor compensation criterion
The Hicks–Kaldor compensation criterion is an economic efficiency test stating that a policy change is desirable if those who gain could in principle compensate those who lose and still be better off, regardless of whether compensation actually occurs.
-
E.
The Economics of Welfare
The Economics of Welfare is a foundational 1920 economics treatise by Arthur Cecil Pigou that systematically develops welfare economics and the concept of externalities to analyze the role of government in correcting market failures.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
theorem in economics
ⓘ
welfare economics theorem ⓘ |
| appliesTo |
exchange economies
ⓘ
production economies ⓘ |
| associatedWith |
Gérard Debreu
ⓘ
Kenneth Arrow ⓘ Lionel McKenzie ⓘ |
| assumes |
complete markets
ⓘ
convex preferences ⓘ convex production sets ⓘ feasible allocation of resources ⓘ local non-satiation of preferences ⓘ no externalities ⓘ no public goods ⓘ perfect competition ⓘ perfect information ⓘ price-taking behavior ⓘ |
| assumptionType | idealized conditions rarely fully satisfied in real economies ⓘ |
| conclusion |
any Pareto efficient allocation can be supported by some system of prices and lump-sum transfers
ⓘ
efficiency and equity can be separated under ideal conditions ⓘ |
| contrastsWith | first fundamental theorem of welfare economics, which goes from competitive equilibrium to Pareto efficiency ⓘ |
| directionOfResult | from Pareto efficient allocation to competitive equilibrium with transfers ⓘ |
| field |
microeconomics
ⓘ
welfare economics ⓘ |
| historicalContext | developed in the 20th century within general equilibrium theory ⓘ |
| implies |
distributional objectives can be achieved via lump-sum redistribution followed by competitive markets
ⓘ
government can in principle use lump-sum transfers to reach any Pareto efficient allocation ⓘ |
| involvesConcept |
Edgeworth box
ⓘ
Pareto efficiency ⓘ competitive equilibrium ⓘ contract curve ⓘ general equilibrium ⓘ initial endowments ⓘ lump-sum transfers ⓘ |
| limitation |
fails under non-convexities such as increasing returns to scale
ⓘ
fails with asymmetric information ⓘ fails with incomplete markets ⓘ requires lump-sum transfers that are typically infeasible in practice ⓘ |
| mathematicalTool |
fixed-point theorems
ⓘ
separating hyperplane theorem ⓘ
linked to:
Hahn–Banach theorem
|
| relatedTo |
first fundamental theorem of welfare economics
ⓘ
linked to:
First Welfare Theorem
|
| requires | existence of supporting price hyperplanes to convex sets ⓘ |
| states | any Pareto efficient allocation can be decentralized as a competitive equilibrium given suitable lump-sum transfers of initial endowments ⓘ |
| teaches | efficiency properties of markets can be separated from distributional choices under strong assumptions ⓘ |
| usedIn |
normative economics
ⓘ
policy analysis ⓘ public economics ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: second fundamental theorem of welfare economics Description of subject: The second fundamental theorem of welfare economics states that, under certain ideal conditions, any Pareto efficient allocation of resources can be achieved as a competitive market equilibrium given an appropriate redistribution of initial endowments.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: second fundamental theorem of welfare economics
linked to: second fundamental theorem of welfare economics
linked to: second fundamental theorem of welfare economics