{"id":"https://openalex.org/W7171694742","doi":"https://doi.org/10.1016/j.cnsns.2026.110630","title":"Null-validated topological signatures of financial market dynamics","display_name":"Null-validated topological signatures of financial market dynamics","publication_year":2026,"publication_date":"2026-07-29","ids":{"openalex":"https://openalex.org/W7171694742","doi":"https://doi.org/10.1016/j.cnsns.2026.110630"},"language":"en","primary_location":{"id":"doi:10.1016/j.cnsns.2026.110630","is_oa":true,"landing_page_url":"https://doi.org/10.1016/j.cnsns.2026.110630","pdf_url":"https://www.sciencedirect.com/science/article/pii/S1007570426009846/pdf","source":{"id":"https://openalex.org/S39612629","display_name":"Communications in Nonlinear Science and Numerical Simulation","issn_l":"1007-5704","issn":["1007-5704","1878-7274"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Communications in Nonlinear Science and Numerical Simulation","raw_type":"journal-article"},"type":"article","indexed_in":["arxiv","crossref"],"open_access":{"is_oa":true,"oa_status":"hybrid","oa_url":"https://www.sciencedirect.com/science/article/pii/S1007570426009846/pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5001871878","display_name":"Samuel W. Akingbade","orcid":null},"institutions":[{"id":"https://openalex.org/I27837315","display_name":"University of Michigan","ror":"https://ror.org/00jmfr291","country_code":"US","type":"education","lineage":["https://openalex.org/I27837315"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Samuel W. Akingbade","raw_affiliation_strings":["Department of Mathematics, University of Michigan, Ann Arbor, MI, USA"],"raw_orcid":"https://orcid.org/0000-0002-6515-4073","affiliations":[{"raw_affiliation_string":"Department of Mathematics, University of Michigan, Ann Arbor, MI, USA","institution_ids":["https://openalex.org/I27837315"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5001871878"],"corresponding_institution_ids":["https://openalex.org/I27837315"],"apc_list":{"value":3710,"currency":"USD","value_usd":3710},"apc_paid":{"value":3710,"currency":"USD","value_usd":3710},"fwci":0.0,"has_fulltext":true,"cited_by_count":0,"citation_normalized_percentile":{"value":0.84077814,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"163","issue":null,"first_page":"110630","last_page":"110630"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11270","display_name":"Complex Systems and Time Series Analysis","score":0.5461000204086304,"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/T11270","display_name":"Complex Systems and Time Series Analysis","score":0.5461000204086304,"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/T12137","display_name":"Economic theories and models","score":0.05260000005364418,"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/T10588","display_name":"Mathematical Dynamics and Fractals","score":0.04089999943971634,"subfield":{"id":"https://openalex.org/subfields/2610","display_name":"Mathematical Physics"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/dynamics","display_name":"Dynamics (music)","score":0.487199991941452},{"id":"https://openalex.org/keywords/financial-market","display_name":"Financial market","score":0.4399000108242035},{"id":"https://openalex.org/keywords/topology","display_name":"Topology (electrical circuits)","score":0.391400009393692},{"id":"https://openalex.org/keywords/signature","display_name":"Signature (topology)","score":0.2838999927043915},{"id":"https://openalex.org/keywords/key","display_name":"Key (lock)","score":0.2791999876499176},{"id":"https://openalex.org/keywords/series","display_name":"Series (stratigraphy)","score":0.2651999890804291}],"concepts":[{"id":"https://openalex.org/C145912823","wikidata":"https://www.wikidata.org/wiki/Q113558","display_name":"Dynamics (music)","level":2,"score":0.487199991941452},{"id":"https://openalex.org/C19244329","wikidata":"https://www.wikidata.org/wiki/Q208697","display_name":"Financial market","level":2,"score":0.4399000108242035},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.397599995136261},{"id":"https://openalex.org/C184720557","wikidata":"https://www.wikidata.org/wiki/Q7825049","display_name":"Topology (electrical circuits)","level":2,"score":0.391400009393692},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.34709998965263367},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.30079999566078186},{"id":"https://openalex.org/C2779696439","wikidata":"https://www.wikidata.org/wiki/Q7512811","display_name":"Signature (topology)","level":2,"score":0.2838999927043915},{"id":"https://openalex.org/C26517878","wikidata":"https://www.wikidata.org/wiki/Q228039","display_name":"Key (lock)","level":2,"score":0.2791999876499176},{"id":"https://openalex.org/C121864883","wikidata":"https://www.wikidata.org/wiki/Q677916","display_name":"Statistical physics","level":1,"score":0.2768000066280365},{"id":"https://openalex.org/C149782125","wikidata":"https://www.wikidata.org/wiki/Q160039","display_name":"Econometrics","level":1,"score":0.2732999920845032},{"id":"https://openalex.org/C143724316","wikidata":"https://www.wikidata.org/wiki/Q312468","display_name":"Series (stratigraphy)","level":2,"score":0.2651999890804291},{"id":"https://openalex.org/C29912722","wikidata":"https://www.wikidata.org/wiki/Q295430","display_name":"Econophysics","level":2,"score":0.2639000117778778},{"id":"https://openalex.org/C34947359","wikidata":"https://www.wikidata.org/wiki/Q665189","display_name":"Complex network","level":2,"score":0.2572999894618988},{"id":"https://openalex.org/C116834253","wikidata":"https://www.wikidata.org/wiki/Q2039217","display_name":"Identification (biology)","level":2,"score":0.2567000091075897},{"id":"https://openalex.org/C156778621","wikidata":"https://www.wikidata.org/wiki/Q1365748","display_name":"Spectrum (functional analysis)","level":2,"score":0.2531999945640564}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1016/j.cnsns.2026.110630","is_oa":true,"landing_page_url":"https://doi.org/10.1016/j.cnsns.2026.110630","pdf_url":"https://www.sciencedirect.com/science/article/pii/S1007570426009846/pdf","source":{"id":"https://openalex.org/S39612629","display_name":"Communications in Nonlinear Science and Numerical Simulation","issn_l":"1007-5704","issn":["1007-5704","1878-7274"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Communications in Nonlinear Science and Numerical Simulation","raw_type":"journal-article"},{"id":"pmh:oai:arXiv.org:2602.00383","is_oa":true,"landing_page_url":"https://arxiv.org/abs/2602.00383","pdf_url":"https://arxiv.org/pdf/2602.00383","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"}],"best_oa_location":{"id":"doi:10.1016/j.cnsns.2026.110630","is_oa":true,"landing_page_url":"https://doi.org/10.1016/j.cnsns.2026.110630","pdf_url":"https://www.sciencedirect.com/science/article/pii/S1007570426009846/pdf","source":{"id":"https://openalex.org/S39612629","display_name":"Communications in Nonlinear Science and Numerical Simulation","issn_l":"1007-5704","issn":["1007-5704","1878-7274"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Communications in Nonlinear Science and Numerical Simulation","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W7171694742.pdf","grobid_xml":"https://content.openalex.org/works/W7171694742.grobid-xml"},"referenced_works_count":25,"referenced_works":["https://openalex.org/W1957046493","https://openalex.org/W2024383241","https://openalex.org/W2079672223","https://openalex.org/W2098746383","https://openalex.org/W2102368730","https://openalex.org/W2144044408","https://openalex.org/W2148080284","https://openalex.org/W2153155589","https://openalex.org/W2277437543","https://openalex.org/W2346956614","https://openalex.org/W2597495304","https://openalex.org/W2999954992","https://openalex.org/W3037681644","https://openalex.org/W4239340087","https://openalex.org/W4321374996","https://openalex.org/W4366364697","https://openalex.org/W4385340360","https://openalex.org/W4386505874","https://openalex.org/W4387641157","https://openalex.org/W4388336451","https://openalex.org/W4388871607","https://openalex.org/W4389351441","https://openalex.org/W4413739657","https://openalex.org/W4414855020","https://openalex.org/W4414866674"],"related_works":[],"abstract_inverted_index":{"Financial":[0],"markets":[1],"exhibit":[2],"temporal":[3,126],"organization":[4,127],"that":[5,134],"is":[6],"not":[7],"fully":[8],"captured":[9],"by":[10],"volatility":[11,70],"measures":[12],"or":[13],"linear":[14,129],"correlation":[15],"structure.":[16],"We":[17],"study":[18],"a":[19],"null-validated":[20],"topological":[21],"approach":[22],"for":[23],"quantifying":[24],"financial":[25],"market":[26,46,74,142,145],"complexity":[27],"using":[28],"Bitcoin":[29],"daily":[30],"log":[31],"returns":[32],"and":[33,42,79,87,124],"the":[34,51,56,77,90],"S&P":[35],"500":[36],"index":[37],"as":[38],"examples":[39],"of":[40,55,73,81,99,103],"cryptocurrency":[41],"broad":[43],"U.S.":[44],"equity":[45],"dynamics.":[47],"The":[48],"analysis":[49],"uses":[50],"L":[52],"1":[53],"norm":[54],"persistence":[57,135],"landscapes":[58],"computed":[59],"from":[60,116],"sliding-window":[61],"delay":[62],"embeddings.":[63],"This":[64],"quantity":[65],"co-moves":[66],"strongly":[67],"with":[68],"stochastic":[69],"during":[71],"periods":[72],"stress,":[75],"but":[76],"strength":[78],"form":[80],"this":[82],"relationship":[83],"vary":[84],"over":[85],"time":[86],"differ":[88],"between":[89],"two":[91],"markets.":[92],"Surrogate-based":[93],"null":[94],"models":[95],"provide":[96,138],"statistical":[97],"validation":[98],"these":[100],"observations.":[101],"Rejection":[102],"shuffle":[104],"surrogates":[105,119],"rules":[106],"out":[107],"explanations":[108],"based":[109],"on":[110],"marginal":[111],"distributions":[112],"alone,":[113],"while":[114],"departures":[115],"phase":[117],"randomized":[118],"indicate":[120],"sensitivity":[121],"to":[122],"nonlinear":[123],"phase-dependent":[125],"beyond":[128],"correlations.":[130],"These":[131],"results":[132],"demonstrate":[133],"landscape":[136],"norms":[137],"complementary":[139],"information":[140],"about":[141],"dynamics":[143],"across":[144],"conditions.":[146]},"counts_by_year":[],"updated_date":"2026-08-26T07:47:46.906454","created_date":"2026-07-30T00:00:00"}
