{"id":"https://openalex.org/W4405487225","doi":"https://doi.org/10.1145/3670865.3673533","title":"Constant Inapproximability for Fisher Markets","display_name":"Constant Inapproximability for Fisher Markets","publication_year":2024,"publication_date":"2024-07-08","ids":{"openalex":"https://openalex.org/W4405487225","doi":"https://doi.org/10.1145/3670865.3673533"},"language":"en","primary_location":{"id":"doi:10.1145/3670865.3673533","is_oa":true,"landing_page_url":"https://doi.org/10.1145/3670865.3673533","pdf_url":null,"source":null,"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 25th ACM Conference on Economics and Computation","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://doi.org/10.1145/3670865.3673533","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5048361071","display_name":"Argyrios Deligkas","orcid":"https://orcid.org/0000-0002-6513-6748"},"institutions":[{"id":"https://openalex.org/I184558857","display_name":"Royal Holloway University of London","ror":"https://ror.org/04g2vpn86","country_code":"GB","type":"education","lineage":["https://openalex.org/I124357947","https://openalex.org/I184558857"]}],"countries":["GB"],"is_corresponding":true,"raw_author_name":"Argyrios Deligkas","raw_affiliation_strings":["Royal Holloway, University of London, Egham, United Kingdom"],"raw_orcid":"https://orcid.org/0000-0002-6513-6748","affiliations":[{"raw_affiliation_string":"Royal Holloway, University of London, Egham, United Kingdom","institution_ids":["https://openalex.org/I184558857"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5029623300","display_name":"John Fearnley","orcid":"https://orcid.org/0000-0003-0791-4342"},"institutions":[{"id":"https://openalex.org/I146655781","display_name":"University of Liverpool","ror":"https://ror.org/04xs57h96","country_code":"GB","type":"education","lineage":["https://openalex.org/I146655781"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"John Fearnley","raw_affiliation_strings":["University of Liverpool, Liverpool, United Kingdom"],"raw_orcid":"https://orcid.org/0000-0003-0791-4342","affiliations":[{"raw_affiliation_string":"University of Liverpool, Liverpool, United Kingdom","institution_ids":["https://openalex.org/I146655781"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5065826113","display_name":"Alexandros Hollender","orcid":"https://orcid.org/0000-0001-5255-9349"},"institutions":[{"id":"https://openalex.org/I40120149","display_name":"University of Oxford","ror":"https://ror.org/052gg0110","country_code":"GB","type":"education","lineage":["https://openalex.org/I40120149"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Alexandros Hollender","raw_affiliation_strings":["University of Oxford, Oxford, United Kingdom"],"raw_orcid":"https://orcid.org/0000-0001-5255-9349","affiliations":[{"raw_affiliation_string":"University of Oxford, Oxford, United Kingdom","institution_ids":["https://openalex.org/I40120149"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5024301526","display_name":"Themistoklis Melissourgos","orcid":"https://orcid.org/0000-0002-9867-6257"},"institutions":[{"id":"https://openalex.org/I110002522","display_name":"University of Essex","ror":"https://ror.org/02nkf1q06","country_code":"GB","type":"education","lineage":["https://openalex.org/I110002522"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Themistoklis Melissourgos","raw_affiliation_strings":["University of Essex, Colchester, United Kingdom"],"raw_orcid":"https://orcid.org/0000-0002-9867-6257","affiliations":[{"raw_affiliation_string":"University of Essex, Colchester, United Kingdom","institution_ids":["https://openalex.org/I110002522"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5048361071"],"corresponding_institution_ids":["https://openalex.org/I184558857"],"apc_list":null,"apc_paid":null,"fwci":2.1634,"has_fulltext":false,"cited_by_count":2,"citation_normalized_percentile":{"value":0.92449498,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":91,"max":98},"biblio":{"volume":null,"issue":null,"first_page":"13","last_page":"39"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12137","display_name":"Economic theories and models","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/2002","display_name":"Economics and Econometrics"},"field":{"id":"https://openalex.org/fields/20","display_name":"Economics, Econometrics and Finance"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T12137","display_name":"Economic theories and models","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/2002","display_name":"Economics and Econometrics"},"field":{"id":"https://openalex.org/fields/20","display_name":"Economics, Econometrics and Finance"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10991","display_name":"Game Theory and Voting Systems","score":0.9505000114440918,"subfield":{"id":"https://openalex.org/subfields/2002","display_name":"Economics and Econometrics"},"field":{"id":"https://openalex.org/fields/20","display_name":"Economics, Econometrics and Finance"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10007","display_name":"Monetary Policy and Economic Impact","score":0.9430999755859375,"subfield":{"id":"https://openalex.org/subfields/2000","display_name":"General Economics, Econometrics and Finance"},"field":{"id":"https://openalex.org/fields/20","display_name":"Economics, Econometrics and Finance"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/constant","display_name":"Constant (computer programming)","score":0.6180166006088257},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.47208234667778015}],"concepts":[{"id":"https://openalex.org/C2777027219","wikidata":"https://www.wikidata.org/wiki/Q1284190","display_name":"Constant (computer programming)","level":2,"score":0.6180166006088257},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.47208234667778015},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.1145/3670865.3673533","is_oa":true,"landing_page_url":"https://doi.org/10.1145/3670865.3673533","pdf_url":null,"source":null,"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 25th ACM Conference on Economics and Computation","raw_type":"proceedings-article"},{"id":"pmh:oai:repository.essex.ac.uk:38498","is_oa":true,"landing_page_url":null,"pdf_url":"https://repository.essex.ac.uk/38498/1/3670865.3673533.pdf","source":{"id":"https://openalex.org/S4306401236","display_name":"Open Access at Essex (University of Essex)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I110002522","host_organization_name":"University of Essex","host_organization_lineage":["https://openalex.org/I110002522"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"NonPeerReviewed"},{"id":"pmh:oai:ora.ox.ac.uk:uuid:5e3452d9-8be1-4f56-919b-7e41cb53741f","is_oa":false,"landing_page_url":"https://ora.ox.ac.uk/objects/uuid:5e3452d9-8be1-4f56-919b-7e41cb53741f","pdf_url":null,"source":{"id":"https://openalex.org/S4306402636","display_name":"Oxford University Research Archive (ORA) (University of Oxford)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I40120149","host_organization_name":"University of Oxford","host_organization_lineage":["https://openalex.org/I40120149"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Symplectic Elements","raw_type":"Conference item"}],"best_oa_location":{"id":"doi:10.1145/3670865.3673533","is_oa":true,"landing_page_url":"https://doi.org/10.1145/3670865.3673533","pdf_url":null,"source":null,"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 25th ACM Conference on Economics and Computation","raw_type":"proceedings-article"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G5074706292","display_name":null,"funder_award_id":"EP/X039862/1","funder_id":"https://openalex.org/F4320334627","funder_display_name":"Engineering and Physical Sciences Research Council"},{"id":"https://openalex.org/G5460144331","display_name":"New Techniques for Resolving Boundary Problems in Total Search","funder_award_id":"EP/W014750/1","funder_id":"https://openalex.org/F4320334627","funder_display_name":"Engineering and Physical Sciences Research Council"},{"id":"https://openalex.org/G6486380922","display_name":"NAfANE: New Approaches for Approximate Nash Equilibria","funder_award_id":"EP/X039862/1","funder_id":"https://openalex.org/F4320334627","funder_display_name":"Engineering and Physical Sciences Research Council"},{"id":"https://openalex.org/G7465539200","display_name":null,"funder_award_id":"EP/W014750/1","funder_id":"https://openalex.org/F4320334627","funder_display_name":"Engineering and Physical Sciences Research Council"}],"funders":[{"id":"https://openalex.org/F4320334627","display_name":"Engineering and Physical Sciences Research Council","ror":"https://ror.org/0439y7842"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":38,"referenced_works":["https://openalex.org/W241191267","https://openalex.org/W1822115467","https://openalex.org/W1963150882","https://openalex.org/W1976317489","https://openalex.org/W1985717133","https://openalex.org/W1995573091","https://openalex.org/W1995770143","https://openalex.org/W2008751404","https://openalex.org/W2036174679","https://openalex.org/W2039010276","https://openalex.org/W2041985481","https://openalex.org/W2053060972","https://openalex.org/W2072713008","https://openalex.org/W2095954749","https://openalex.org/W2097048499","https://openalex.org/W2104375208","https://openalex.org/W2118008360","https://openalex.org/W2176870082","https://openalex.org/W2201641266","https://openalex.org/W2604998889","https://openalex.org/W2625867694","https://openalex.org/W2811432292","https://openalex.org/W2953218668","https://openalex.org/W2964275332","https://openalex.org/W2997453865","https://openalex.org/W3124406442","https://openalex.org/W3178986292","https://openalex.org/W3183027453","https://openalex.org/W3202163249","https://openalex.org/W4206682083","https://openalex.org/W4231141778","https://openalex.org/W4234277722","https://openalex.org/W4285395901","https://openalex.org/W4313227201","https://openalex.org/W4382239743","https://openalex.org/W4382395702","https://openalex.org/W4386746807","https://openalex.org/W6685303703"],"related_works":["https://openalex.org/W4391375266","https://openalex.org/W2899084033","https://openalex.org/W2748952813","https://openalex.org/W2390279801","https://openalex.org/W4391913857","https://openalex.org/W2358668433","https://openalex.org/W4396701345","https://openalex.org/W2376932109","https://openalex.org/W2001405890","https://openalex.org/W4396696052"],"abstract_inverted_index":{"We":[0,33],"study":[1],"the":[2,22,46,84],"problem":[3,23,47],"of":[4,78],"computing":[5,66],"approximate":[6],"market":[7],"equilibria":[8],"in":[9],"Fisher":[10],"markets":[11,91],"with":[12,92],"separable":[13],"piecewise-linear":[14],"concave":[15],"(SPLC)":[16],"utility":[17,94],"functions.":[18,95],"In":[19,61],"this":[20,35],"setting,":[21],"was":[24],"only":[25],"known":[26],"to":[27],"be":[28],"PPAD-complete":[29],"for":[30,40,88],"inverse-polynomial":[31],"approximations.":[32,42],"strengthen":[34],"result":[36],"by":[37],"showing":[38],"PPAD-hardness":[39],"constant":[41],"This":[43],"means":[44],"that":[45,65],"does":[48],"not":[49],"admit":[50],"a":[51,75],"polynomial":[52],"time":[53],"approximation":[54,68],"scheme":[55],"(PTAS)":[56],"unless":[57],"PPAD":[58],"=":[59],"P.":[60],"fact,":[62],"we":[63,82],"prove":[64],"any":[67],"better":[69],"than":[70],"1/11":[71],"is":[72],"PPAD-complete.":[73],"As":[74],"direct":[76],"byproduct":[77],"our":[79],"main":[80],"result,":[81],"get":[83],"same":[85],"inapproximability":[86],"bound":[87],"Arrow-Debreu":[89],"exchange":[90],"SPLC":[93]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":1}],"updated_date":"2025-12-22T23:10:17.713674","created_date":"2025-10-10T00:00:00"}
