{"id":"https://openalex.org/A5075416161","orcid":"https://orcid.org/0000-0002-8523-0838","observed_orcids":["https://orcid.org/0000-0002-8523-0838"],"display_name":"S. Karthikeyan","raw_author_names":["Karthikeyan S","Karthikeyan Shanmugasundaram","Karthikeyan, S.","Karthikeyan, Shanmugasundaram","S. Karthikeyan","Shanmugasundaram Karthikeyan"],"full_name":"Karthikeyan, Shanmugasundaram","works_count":38,"cited_by_count":275,"summary_stats":{"2yr_mean_citedness":2.533333333333333,"h_index":10,"i10_index":10},"ids":{"openalex":"https://openalex.org/A5075416161","orcid":"https://orcid.org/0000-0002-8523-0838","observed_orcids":["https://orcid.org/0000-0002-8523-0838"]},"affiliations":[{"institution":{"id":"https://openalex.org/I111575329","ror":"https://ror.org/04fht8c22","display_name":"Bharathiar University","country_code":"IN","type":"education","lineage":["https://openalex.org/I111575329"]},"years":[2011,2010,2009,2007]},{"institution":{"id":"https://openalex.org/I141431873","ror":"https://ror.org/05crs8s98","display_name":"Periyar University","country_code":"IN","type":"education","lineage":["https://openalex.org/I141431873"]},"years":[2026,2025,2024,2023,2022,2020,2018,2017,2016,2015,2011]}],"last_known_institutions":[{"id":"https://openalex.org/I141431873","ror":"https://ror.org/05crs8s98","display_name":"Periyar University","country_code":"IN","type":"education","lineage":["https://openalex.org/I141431873"]}],"topics":[{"id":"https://openalex.org/T10541","display_name":"Nonlinear Differential Equations Analysis","count":24,"subfield":{"id":"https://openalex.org/subfields/2604","display_name":"Applied Mathematics"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10194","display_name":"Nonlinear Partial Differential Equations","count":20,"subfield":{"id":"https://openalex.org/subfields/2604","display_name":"Applied Mathematics"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11110","display_name":"Stability and Controllability of Differential Equations","count":17,"subfield":{"id":"https://openalex.org/subfields/2207","display_name":"Control and Systems Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11829","display_name":"Mathematical Biology Tumor Growth","count":14,"subfield":{"id":"https://openalex.org/subfields/2611","display_name":"Modeling and Simulation"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10046","display_name":"Stability and Control of Uncertain Systems","count":11,"subfield":{"id":"https://openalex.org/subfields/2207","display_name":"Control and Systems Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"topic_share":[{"id":"https://openalex.org/T11829","display_name":"Mathematical Biology Tumor Growth","value":0.0001976,"subfield":{"id":"https://openalex.org/subfields/2611","display_name":"Modeling and Simulation"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11110","display_name":"Stability and Controllability of Differential Equations","value":0.0001111,"subfield":{"id":"https://openalex.org/subfields/2207","display_name":"Control and Systems Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10194","display_name":"Nonlinear Partial Differential Equations","value":9.22e-05,"subfield":{"id":"https://openalex.org/subfields/2604","display_name":"Applied Mathematics"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10541","display_name":"Nonlinear Differential Equations Analysis","value":7.86e-05,"subfield":{"id":"https://openalex.org/subfields/2604","display_name":"Applied Mathematics"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12135","display_name":"Fuzzy Systems and Optimization","value":4.43e-05,"subfield":{"id":"https://openalex.org/subfields/2613","display_name":"Statistics and Probability"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"x_concepts":[{"id":"33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","score":0.912473201751709},{"id":"28826006","wikidata":"https://www.wikidata.org/wiki/Q33521","display_name":"Applied mathematics","score":0.5633409023284912},{"id":"134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","score":0.49619999527931213},{"id":"41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","score":0.477298378944397},{"id":"121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","score":0.374099999666214}],"counts_by_year":[{"year":2007,"works_count":4,"oa_works_count":2,"cited_by_count":0},{"year":2008,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2009,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":2010,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2011,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":2012,"works_count":0,"oa_works_count":0,"cited_by_count":5},{"year":2013,"works_count":0,"oa_works_count":0,"cited_by_count":15},{"year":2014,"works_count":0,"oa_works_count":0,"cited_by_count":11},{"year":2015,"works_count":1,"oa_works_count":1,"cited_by_count":18},{"year":2016,"works_count":1,"oa_works_count":0,"cited_by_count":17},{"year":2017,"works_count":3,"oa_works_count":2,"cited_by_count":17},{"year":2018,"works_count":1,"oa_works_count":1,"cited_by_count":6},{"year":2019,"works_count":1,"oa_works_count":1,"cited_by_count":15},{"year":2020,"works_count":3,"oa_works_count":0,"cited_by_count":15},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":11},{"year":2022,"works_count":1,"oa_works_count":1,"cited_by_count":11},{"year":2023,"works_count":1,"oa_works_count":0,"cited_by_count":13},{"year":2024,"works_count":4,"oa_works_count":3,"cited_by_count":17},{"year":2025,"works_count":7,"oa_works_count":3,"cited_by_count":19},{"year":2026,"works_count":4,"oa_works_count":2,"cited_by_count":36}],"display_name_alternatives":["Karthikeyan S","Karthikeyan Shanmugasundaram","Karthikeyan, S.","Karthikeyan, Shanmugasundaram","S. Karthikeyan","Shanmugasundaram Karthikeyan"],"block_key":"s karthikeyan","works_api_url":"https://api.openalex.org/works?filter=author.id:A5075416161","awards_count":0,"awards_api_url":"https://api.openalex.org/awards?filter=investigators.author.id:A5075416161","updated_date":"2026-11-12T13:17:38","created_date":"2016-06-24T00:00:00"}
