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Open Call for Papers: 29th International Conference on Intuitionistic Fuzzy Sets • 6–7 November 2026 • Sofia, Bulgaria / Online
Deadline for submissions: 10 May 2026.

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16:34, 24 August 2011 20110511-SP-Geetha-seminar-Burgas-2.jpg (file) 1.82 MB Vassia Atanassova (talk | contribs) {{upload | description = S. P. Geetha during her lecture on "Temporal Intuitionistic Fuzzy Sets" in Burgas University "Prof. Asen Zlatarov" | author = Sotir Sotirov | source = own work | date = 11 May 2011 | license = | other-version = }} [[Catego 1
16:32, 24 August 2011 20110511-SP-Geetha-seminar-Burgas-1.jpg (file) 1.57 MB Vassia Atanassova (talk | contribs) {{upload | description = S. P. Geetha during her lecture on "Temporal Intuitionistic Fuzzy Sets" in Burgas University "Prof. Asen Zlatarov" | author = Sotir Sotirov | source = own work | date = 11 May 2011 | license = | other-version = }} [[Catego 1
16:27, 24 August 2011 20110511-Parvathi-Rangasamy-seminar-Burgas-2.jpg (file) 1.64 MB Vassia Atanassova (talk | contribs) {{upload | description = Parvathi Rangasamy during her lecture on "An Intuitionistic Fuzzy Clustering Technique " in Burgas University "Prof. Asen Zlatarov" | author = Sotir Sotirov | source = own work | date = 11 May 2011 | license = | other-versi 1
16:24, 24 August 2011 20110511-Parvathi-Rangasamy-seminar-Burgas-1.jpg (file) 1.42 MB Vassia Atanassova (talk | contribs) {{upload | description = Parvathi Rangasamy during her lecture on "An Intuitionistic Fuzzy Clustering Technique " in Burgas University "Prof. Asen Zlatarov" | author = Sotir Sotirov | source = own work | date = 11 May 2011 | license = | other-versi 1
16:08, 24 August 2011 DDIFLTIT-2010-Parvathi-presentation.pdf (file) 693 KB Vassia Atanassova (talk | contribs) {{upload | description = "Applications of Intuitionistic Fuzzy Operators in Image Processing" for Project:Design and development of intuitionistic fuzzy logic tools in information technologies | author = Parvathi Rangasamy | source = | date = 1
15:53, 24 August 2011 DDIFLTIT-2011-Geetha-presentation.pdf (file) 491 KB Vassia Atanassova (talk | contribs) {{upload | description = "Temporal Intuitionistic Fuzzy Sets" for Project:Design and development of intuitionistic fuzzy logic tools in information technologies | author = S. P. Geetha | source = own work | date = 11 May 2011 | license = | 1
15:52, 24 August 2011 DDIFLTIT-2011-Parvathi-presentation-B.pdf (file) 1.13 MB Vassia Atanassova (talk | contribs) {{upload | description = "An Intuitionistic Fuzzy Clustering Technique" for Project:Design and development of intuitionistic fuzzy logic tools in information technologies | author = Parvathi Rangasamy | source = | date = 11 May 2011 | licens 1
00:11, 26 May 2011 NIFS-01-2-079-084.pdf (file) 1.99 MB Vassia Atanassova (talk | contribs) {{upload | description = Issue:On intuitionistic fuzzy points | author = Doğan Çoker, Mustafa Demirci | source = "Notes on IFS", Volume 1 (1995) Number 2, pages 79—84 | date = 1995 | licens 1
13:54, 2 May 2011 NIFS-10-2-20-31.pdf (file) 4.84 MB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Characterizing regular semigroups using intuitionistic fuzzy sets | author = Yongfa Hong, Changjun Jiang | source = Notes on Intuitionistic Fuzzy Sets/10/2 | date = 2004 | license = | other-version = 1
14:49, 1 May 2011 NIFS-17-1-58-70.pdf (file) 179 KB Vassia Atanassova (talk | contribs) {{upload | description = Approximate solutions preserving parameters of intuitionistic fuzzy linear systems | author = Adrian Ban, Lucian Coroianu | so 1
14:49, 1 May 2011 NIFS-17-1-48-57.pdf (file) 104 KB Vassia Atanassova (talk | contribs) {{upload | description = Intuitionistic fuzzy δ-connectedness and θ-connectedness | author = Salah Abbas, Biljana Krsteska | source = [[Notes on Intuitionistic Fuzzy Sets/17 1
14:48, 1 May 2011 NIFS-17-1-37-47.pdf (file) 111 KB Vassia Atanassova (talk | contribs) {{upload | description = Constant intuitionistic fuzzy graphs | author = M. G. Karunambigai, Parvathi Rangasamy, R. Buvaneswari | source = Notes on Intuitionistic Fuzzy Sets/17/1 | date = 1
14:48, 1 May 2011 NIFS-17-1-30-36.pdf (file) 186 KB Vassia Atanassova (talk | contribs) {{upload | description = Alpha generalized homeomorphism in intuitionistic fuzzy topological spaces | author = R. Santhi, K. Sakthivel | source = [[Notes on In 1
14:47, 1 May 2011 NIFS-17-1-23-29.pdf (file) 173 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:On the basic properties of the negations generated by some parametric intuitionistic fuzzy implications | author = Piotr Dworniczak | source = Notes on Intuitionistic Fuzzy Sets/17/1 | date = 2011 | license 1
14:46, 1 May 2011 NIFS-17-1-05-22.pdf (file) 240 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Modified ranking of intuitionistic fuzzy numbers | author = V. Lakshmana Gomathi Nayagam, G. Venkateshwari, Geetha Sivaraman | source = Notes on Intuitionistic Fuzzy Sets/17/1 | date = 2011 | license = | othe 1
09:23, 1 May 2011 NIFS-17-1-01-04.pdf (file) 96 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:On Zadeh's intuitionistic fuzzy disjunction and conjunction | author = Krassimir Atanassov | source = Notes on Intuitionistic Fuzzy Sets/17/1 | date = 2011 | license = | other-version = }} [[Category:PDF 1
09:18, 1 May 2011 NIFS-16-4.rar (file) 987 KB Vassia Atanassova (talk | contribs) {{upload | description = Full contents of Notes on Intuitionistic Fuzzy Sets, Vol. 16, No. 4 | author = - | source = NIFS/16/4 | date = 2010 | license = | other-version = }} Category:RAR files 1
12:40, 19 February 2011 NIFS-16-4-12-16.pdf (file) 201 KB Vassia Atanassova (talk | contribs) {{upload | description = Geometric interpretation and the properties of two new operators over the intuitionistic fuzzy sets | author = [[Peter 1
11:36, 19 February 2011 NIFS-16-4-31-36.pdf (file) 156 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:On intuitionistic fuzzy histograms | author = Lilija Atanassova, George Gluhchev, Krassimir Atanassov | source = Notes on Intuitionistic Fuzzy Sets/16/4 | date = 2010 | license = | other-version = 1
11:35, 19 February 2011 NIFS-16-4-26-30.pdf (file) 113 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:On some ways of determining membership and non-membership functions characterizing intuitionistic fuzzy sets | author = Krassimir Atanassov, Eulalia Szmidt, Janusz Kacprzyk | source = [[Notes on Intuition 1
11:34, 19 February 2011 NIFS-16-4-17-25.pdf (file) 202 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Conditional probability on the Kôpka D-posets | author = Ivana Hollá, Karol Samuelčik | source = Notes on Intuitionistic Fuzzy Sets/16/4 | date = 2010 | license = | other-version = }} [[Category:P 1
11:33, 19 February 2011 NIFS-16-4-09-11.pdf (file) 138 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:The Inclusion-Exclusion Principle on some algebraic structures | author = Jana Kelemenová, Mária Kuková | source = Notes on Intuitionistic Fuzzy Sets/16/4 | date = 2010 | license = | other-version 1
11:32, 19 February 2011 NIFS-16-4-05-08.pdf (file) 137 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:The Inclusion-Exclusion principle for IF-events | author = Karol Samuelčik, Jana Kelemenová | source = Notes on Intuitionistic Fuzzy Sets/16/4 | date = 2010 | license = | other-version = }} [[Categ 1
11:31, 19 February 2011 NIFS-16-4-01-04.pdf (file) 125 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Operation division by n over intuitionistic fuzzy sets | author = Beloslav Riečan, Krassimir Atanassov | source = Notes on Intuitionistic Fuzzy Sets/16/4 | date = 2010 | license = | other-version = 1
17:14, 1 February 2011 Modprofix-seminar-GA-20110120.ppt (file) 621 KB Vassia Atanassova (talk | contribs) {{upload | description = Presentation on "Application of genetic algorithms when solving optimizational problems with fermentational processes" | author = Olympia Roeva | source = own work | date = 20 January 2011 | license = | other-version = 1
17:32, 23 January 2011 NIFS-16-3.rar (file) 832 KB Vassia Atanassova (talk | contribs) {{upload | description = Full contents of Notes on Intuitionistic Fuzzy Sets, Vol. 16, No. 3 | author = - | source = NIFS/16/3 | date = 2010 | license = | other-version = }} Category:PDF files 1
17:30, 23 January 2011 NIFS-16-2.rar (file) 859 KB Vassia Atanassova (talk | contribs) {{upload | description = Full contents of Notes on Intuitionistic Fuzzy Sets, Vol. 16, No. 2 | author = - | source = NIFS/16/2 | date = 2010 | license = | other-version = }} Category:PDF files 1
13:42, 23 January 2011 NIFS-16-2-50-56.pdf (file) 158 KB Vassia Atanassova (talk | contribs) {{upload | description = [[Issue:Generalized net model of process of the administration servicing in a digital university with intuitionistic fuzzy estimations|Generalized net model of process of the administration servicing in a digital university with 1
13:41, 23 January 2011 NIFS-16-2-39-49.pdf (file) 147 KB Vassia Atanassova (talk | contribs) {{upload | description = Domination in intuitionistic fuzzy graphs | author = G. Thamizhendhi, Rangasamy Parvathi | source = NIFS/16/2 | date = 2010 | license = | other-version = }} 1
13:41, 23 January 2011 NIFS-16-2-35-38.pdf (file) 130 KB Vassia Atanassova (talk | contribs) {{upload | description = On the new intuitionistic fuzzy operator x<sub>a,b,c,d,e,f</sub> | author = Krassimir Atanassov | source = NIFS/16/2 | date = 2010 | license = | other 1
13:27, 23 January 2011 NIFS-16-2-31-34.pdf (file) 143 KB Vassia Atanassova (talk | contribs) {{upload | description = [[Issue:Four modal forms of intuitionistic fuzzy implication →@ and two related intuitionistic fuzzy negations. Part 1|Four modal forms of intuitionistic fuzzy implication →<sub>@</sub> and two related intuitionistic fuzzy ne 1
23:02, 13 January 2011 GN-2transitions.png (file) 17 KB Vassia Atanassova (talk | contribs) {{upload | description = Simple illustration of a GN net with two transitions. | author = Vassia Atanassova | source = own work | date = 2011-01-13 | license = | other-version = }} Category:Images 1
22:50, 13 January 2011 GN-transition-1x2.png (file) 7 KB Vassia Atanassova (talk | contribs) {{upload | description = Simple illustration of a GN transition with one input and two output places. | author = Vassia Atanassova | source = own work | date = 2011-01-13 | license = | other-version = }} Category:Images 1
21:07, 13 January 2011 NIFS-16-2-22-30.pdf (file) 63 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:On some issues related to the distances between the Atanassov intuitionistic fuzzy sets are described on universe with weights | author = Radoslav Tcvetkov, Eulalia Szmidt, Janusz Kacprzyk | source = [[NI 1
20:39, 13 January 2011 NIFS-16-2-16-21.pdf (file) 138 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Equalities with intuitionistic fuzzy subtractions and negations | author = Krassimir Atanassov, Magdaléna Renčová | source = NIFS/16/2 | date = 2010 | license = | other-version = }} [[Category:PD 1
20:34, 13 January 2011 NIFS-16-2-12-15.pdf (file) 71 KB Vassia Atanassova (talk | contribs) {{upload | description = A note on the extended modal operator G<sub>α,β</sub> | author = Peter Vassilev | source = NIFS/16/2 | date = 2010 | license = | other-version = }} [[Catego 1
20:32, 13 January 2011 NIFS-16-2-01-11.pdf (file) 119 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:On some measures of information and knowledge for intuitionistic fuzzy sets | author = Eulalia Szmidt, Janusz Kacprzyk | source = NIFS/16/2 | date = 2010 | license = | other-version = }} [[Category: 1
17:51, 13 January 2011 IFSA-EUSFLAT-2009-1882-1886.pdf (file) 154 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Notes on Q-probabilities on intuitionistic fuzzy events, Proceedings of the Joint 2009 International Fuzzy Systems Association World Congress and 2009 European Society of Fuzzy Logic and Technology Conference, Lisbon, 1
17:50, 13 January 2011 IFSA-EUSFLAT-2009-1416-1421.pdf (file) 138 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Analysis of similarity measures for Atanassov's intuitionistic fuzzy sets, Proceedings of the Joint 2009 International Fuzzy Systems Association World Congress and 2009 European Society of Fuzzy Logic and Technology Co 1
17:50, 13 January 2011 IFSA-EUSFLAT-2009-0478-0482.pdf (file) 168 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Generalized Atanassov’s intuitionistic fuzzy index. Construction method, Proceedings of the Joint 2009 International Fuzzy Systems Association World Congress and 2009 European Society of Fuzzy Logic and Technology Co 1
17:47, 13 January 2011 IFSA-EUSFLAT-2009-0184-0188.pdf (file) 118 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Non-conjunctive and non-disjunctive uninorms in Atanassov’s intuitionistic fuzzy set theory, Proceedings of the Joint 2009 International Fuzzy Systems Association World Congress and 2009 European Society of Fuzzy Log 1
15:42, 11 January 2011 FNTS-2010-Atanassova.pdf (file) 280 KB Vassia Atanassova (talk | contribs) {{upload | description = Уики технологии в помощ на науката. Примерът с Ifigenia.org | author = Vassia Atanassova | source = Youth session of the Federation of Scientific-Technical Unions, Bulgaria, 10-11 May 2 1
15:40, 11 January 2011 NMA-2010-Atanassova,Atanassov.pdf (file) 164 KB Vassia Atanassova (talk | contribs) {{upload | description = Ant Colony Optimization Approach to Tokens' Movement within Generalized Nets | author = Vassia Atanassova, Krassimir Atanassov | source = NMA 2010 | date = 2010 | license = | other-version = }} [[Category:PDF files 1
15:34, 11 January 2011 EUROSIM-2010-Dobrinkova,Vassileva.pdf (file) 265 KB Vassia Atanassova (talk | contribs) {{upload | description = General Description of WRF-Fire Model Applicable to Bulgarian Forest Fire Data | author = Nina Dobrinkova, Mariana Vassileva | source = EUROSIM 2010 | date = 2010 | license = | other-version = }} Category:PDF files 1
14:15, 8 January 2011 NIFS-16-3-40-41.pdf (file) 97 KB Vassia Atanassova (talk | contribs) {{upload | description = [[Issue: Remark on equalities between intuitionistic fuzzy sets|]] | author = Krassimir Atanassov | source = Notes on Intuitionistic Fuzzy Sets/16/3 | date = 2010 | license = | other-version = }} [[Category:PDF fil 1
14:15, 8 January 2011 NIFS-16-3-28-39.pdf (file) 223 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Intuitionistic fuzzy generalized semi-pre closed mappings | author = R. Santhi, D. Jayanthi | source = Notes on Intuitionistic Fuzzy Sets/16/3 | date = 2010 | license = | other-version = }} [[Categor 1
14:14, 8 January 2011 NIFS-16-3-22-27.pdf (file) 161 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:(α,β)-cut of intuitionistic fuzzy ideals | author = Dhiren Kumar Basnet | source = Notes on Intuitionistic Fuzzy Sets/16/3 | date = 2010 | license = | other-version = }} Category:PDF files 1
14:14, 8 January 2011 NIFS-16-3-01-21.pdf (file) 274 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Continuity of intuitionistic fuzzy proper functions on intuitionistic smooth fuzzy topological spaces | author = Rajakumar Roopkumar, C. Kalaivani | source = Notes on Intuitionistic Fuzzy Sets/16/3 | dat 1
01:43, 9 November 2010 IssuesIFSGN-8-036-039.pdf (file) 56 KB Vassia Atanassova (talk | contribs) {{upload | description = Cantor's norms for intuitionistic fuzzy sets | author = Krassimir Atanassov | source = Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 8, 2010, Warsaw, pp. 36-39 | date = 2010 | license = | other-version = 1
01:40, 9 November 2010 IssuesIFSGN-8-050-057.pdf (file) 148 KB Vassia Atanassova (talk | contribs) {{upload | description = Determining intuitionistic fuzzy degree of overlapping of computation and communication in parallel applications using generalized nets | author = Pavel Tcheshmedjiev, Peter Vassilev | source = Issues in Intuitionistic Fuzzy Se 1
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