{"id":"https://openalex.org/A5038137255","orcid":"https://orcid.org/0000-0002-7020-3466","observed_orcids":["https://orcid.org/0000-0002-7020-3466"],"display_name":"R. Udhayakumar","raw_author_names":["R Udhayakumar","R. Udhayakumar","R.Udhayakumar","Ramalingam Udhayakumar","Udhayakumar R","Udhayakumar Ramalingam","Udhayakumar, Ramalingam"],"full_name":"Udhayakumar, Ramalingam","works_count":133,"cited_by_count":2562,"summary_stats":{"2yr_mean_citedness":4.4772727272727275,"h_index":28,"i10_index":60},"ids":{"openalex":"https://openalex.org/A5038137255","orcid":"https://orcid.org/0000-0002-7020-3466","observed_orcids":["https://orcid.org/0000-0002-7020-3466"]},"affiliations":[{"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":[2015,2014]},{"institution":{"id":"https://openalex.org/I142504963","ror":"https://ror.org/01qkd1z70","display_name":"Bannari Amman Institute of Technology","country_code":"IN","type":"education","lineage":["https://openalex.org/I142504963"]},"years":[2017,2016]},{"institution":{"id":"https://openalex.org/I876193797","ror":"https://ror.org/00qzypv28","display_name":"Vellore Institute of Technology University","country_code":"IN","type":"education","lineage":["https://openalex.org/I876193797"]},"years":[2026,2025,2024,2023,2022,2021,2020,2018]}],"last_known_institutions":[{"id":"https://openalex.org/I876193797","ror":"https://ror.org/00qzypv28","display_name":"Vellore Institute of Technology University","country_code":"IN","type":"education","lineage":["https://openalex.org/I876193797"]}],"topics":[{"id":"https://openalex.org/T10541","display_name":"Nonlinear Differential Equations Analysis","count":102,"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","count":89,"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"}},{"id":"https://openalex.org/T10288","display_name":"Fractional Differential Equations Solutions","count":63,"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","count":30,"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/T11671","display_name":"Fuzzy and Soft Set Theory","count":12,"subfield":{"id":"https://openalex.org/subfields/1803","display_name":"Management Science and Operations Research"},"field":{"id":"https://openalex.org/fields/18","display_name":"Decision Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"topic_share":[{"id":"https://openalex.org/T12135","display_name":"Fuzzy Systems and Optimization","value":0.0009866,"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"}},{"id":"https://openalex.org/T10288","display_name":"Fractional Differential Equations Solutions","value":0.0004607,"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/T10541","display_name":"Nonlinear Differential Equations Analysis","value":0.0003347,"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","value":0.0001963,"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/T14500","display_name":"Smarandache Functions and Recreational Number Theory","value":0.0001272,"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"}}],"x_concepts":[{"id":"48209547","wikidata":"https://www.wikidata.org/wiki/Q1331104","display_name":"Controllability","score":0.9880940318107605},{"id":"33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","score":0.9418061971664429},{"id":"154249771","wikidata":"https://www.wikidata.org/wiki/Q1339058","display_name":"Fractional calculus","score":0.7805896997451782},{"id":"28826006","wikidata":"https://www.wikidata.org/wiki/Q33521","display_name":"Applied mathematics","score":0.6388322114944458},{"id":"134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","score":0.5418999791145325}],"counts_by_year":[{"year":2014,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":2015,"works_count":2,"oa_works_count":1,"cited_by_count":4},{"year":2016,"works_count":3,"oa_works_count":1,"cited_by_count":2},{"year":2017,"works_count":3,"oa_works_count":1,"cited_by_count":1},{"year":2018,"works_count":7,"oa_works_count":6,"cited_by_count":4},{"year":2019,"works_count":2,"oa_works_count":2,"cited_by_count":13},{"year":2020,"works_count":20,"oa_works_count":2,"cited_by_count":102},{"year":2021,"works_count":11,"oa_works_count":1,"cited_by_count":319},{"year":2022,"works_count":20,"oa_works_count":12,"cited_by_count":603},{"year":2023,"works_count":18,"oa_works_count":14,"cited_by_count":507},{"year":2024,"works_count":21,"oa_works_count":17,"cited_by_count":397},{"year":2025,"works_count":15,"oa_works_count":3,"cited_by_count":354},{"year":2026,"works_count":8,"oa_works_count":6,"cited_by_count":255}],"display_name_alternatives":["R Udhayakumar","R. Udhayakumar","R.Udhayakumar","Ramalingam Udhayakumar","Udhayakumar R","Udhayakumar Ramalingam","Udhayakumar, Ramalingam"],"block_key":"r udhayakumar","works_api_url":"https://api.openalex.org/works?filter=author.id:A5038137255","updated_date":"2026-11-07T12:08:38","created_date":"2016-06-24T00:00:00"}