Open Call for Papers: 29th International Conference on Intuitionistic Fuzzy Sets • 6–7 November 2026 • Sofia, Bulgaria / Online
NEW EXTENDED deadline for submissions: 15 AUGUST 2026.

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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
01:37, 9 November 2010 IssuesIFSGN-8-024-029.pdf (file) 100 KB Vassia Atanassova (talk | contribs) {{upload | description = New ways for altering the intuitionistic fuzzy experts' estimations | author = Krassimir Atanassov | source = Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 8, 2010, Warsaw, pp. 24-29 | date = 2010 | license 1
01:37, 9 November 2010 IssuesIFSGN-8-008-018.pdf (file) 265 KB Vassia Atanassova (talk | contribs) {{upload | description = Spatial interpretation of operators over intuitionistic fuzzy sets | author = Lyudmila Todorova, Peter Vassilev, Eulalia Szmidt, Stefan Hadjitodorov, | source = Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 8, 1
01:35, 9 November 2010 IssuesIFSGN-8-001-007.pdf (file) 122 KB Vassia Atanassova (talk | contribs) {{upload | description = On two topological operators over intuitionistic fuzzy sets | author = Krassimir Atanassov | source = Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Vol. 8, 2010, Warsaw, pp. 1-7 | date = 2010 | license = | othe 1
01:29, 9 November 2010 DFSIFSGNRT-2010-177-184-Shannon,Rangasamy,Atanassov,Chountas.pdf (file) 8.13 MB Vassia Atanassova (talk | contribs) {{upload | description = On intuitionistic fuzzy trees | author = Anthony Shannon, Parvathi Rangasamy, Krassimir Atanassov, Panagiotis Chountas | source = Developments in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics, Vol. 1
00:20, 9 November 2010 NIFS-16-3-42-44.pdf (file) 130 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:On intuitionistic fuzzy level operators | author = Beloslav Riečan, Krassimir Atanassov | source = Notes on Intuitionistic Fuzzy Sets/16/3 | date = 2010 | license = | other-version = }} [[Category: 1
00:12, 9 November 2010 ASCM-20-4-569-574-Peter-Vassilev.pdf (file) 230 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:On reassessment of expert evaluations in the case of intuitionistic fuzziness | author = Peter Vassilev | source = Advanced Studies on Contemporary Mathematics | date = October 2010 | license = | other-version = 1
00:11, 9 November 2010 ASCM-20-4-569-574-Peter-Vassilev-scanned.pdf (file) 8.56 MB Vassia Atanassova (talk | contribs) {{upload | description = Issue:On reassessment of expert evaluations in the case of intuitionistic fuzziness | author = Peter Vassilev | source = Advanced Studies on Contemporary Mathematics | date = October 2010 | license = | other-version = 1
20:33, 1 August 2010 NIFS-05-3-06-10.pdf (file) 179 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:An idea for an intuitionistic fuzzy approach to decision making | author = Cecilia Temponi, Anthony Shannon, Krassimir Atanassov, Adrian Ban | source = Notes on Intuitionistic Fuzzy Sets/05/3 | date = 1999 | l 1
18:24, 1 August 2010 NIFS-05-3-31-34.pdf (file) 184 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Measures of contradiction for intuitionistic fuzzy sets and for fuzzy classifications | author = Jiri Georg Sustal | source = Notes on Intuitionistic Fuzzy Sets/05/3 | date = 1999 | license = | other-version 1
15:11, 1 August 2010 NIFS-05-3-29-30.pdf (file) 65 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Intuitionistic fuzzy extension principle | author = Mariana Stoeva | source = Notes on Intuitionistic Fuzzy Sets/05/3 | date = 1999 | license = | other-version = }} Category:PDF files 1
13:57, 1 August 2010 NIFS-05-3-01-05.pdf (file) 263 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Fuzzy multifunctions in intuitionistic fuzzy topological spaces | author = Oya Bedre Özbakir, Doğan Çoker | source = Notes on Intuitionistic Fuzzy Sets/05/3 | date = 1999 | license = | other-version = }} 1
15:56, 22 July 2010 FNTS-2010-Vassia-Atanassova-statia.pdf (file) 280 KB Vassia Atanassova (talk | contribs) {{upload | description = УИКИ ТЕХНОЛОГИИ В ПОМОЩ НА НАУКАТА. ПРИМЕРЪТ С IFIGENIA.ORG | author = Вася Атанасова | source = own work | date = 2010 | license = | other-version = }} [[Category:PDF fil 1
15:47, 22 July 2010 8NMNPS2010-award.jpg (file) 493 KB Vassia Atanassova (talk | contribs) Category:Images 1
15:26, 22 July 2010 EUSFLAT-2005-461-466.pdf (file) 267 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:A new measure of entropy and its connection with a similarity measure for intuitionistic fuzzy sets, PProceedings of the Joint 4th Conference of the European Society for Fuzzy Logic and Technology and the 11th Rencontr 1
15:24, 22 July 2010 EUSFLAT-2005-455-460.pdf (file) 283 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Self-contradiction degrees in intuitionistic fuzzy sets, PProceedings of the Joint 4th Conference of the European Society for Fuzzy Logic and Technology and the 11th Rencontres Francophones sur la Logique Floue et ses 1
11:29, 19 July 2010 NIFS-08-2-37-41.pdf (file) 94 KB Vassia Atanassova (talk | contribs) {{upload | description = Refutability of physical theories: A new approach | author = Azary Polikarov, Krassimir Atanassov | source = Notes on Intuitionistic Fuzzy Sets/08/2 | date = 200 1
17:34, 18 July 2010 IFSTool-graph.png (file) 24 KB Vassia Atanassova (talk | contribs) {{upload | description = IFSTool - Drawing the graph of the relation "smaller or equal" | author = Dimitar Dimitrov | source = own work | date = 2010 | license = | other-version = }} Category:IFSTool screenshots 1
17:31, 18 July 2010 IFSTool-remove-duplicates.png (file) 31 KB Vassia Atanassova (talk | contribs) {{upload | description = IFSTool - Removal of duplicates | author = Dimitar Dimitrov | source = own work | date = 2010 | license = | other-version = }} Category:IFSTool screenshots 1
17:28, 18 July 2010 IFSTool-check-axioms.png (file) 35 KB Vassia Atanassova (talk | contribs) {{upload | description = IFSTool - Check of axioms | author = Dimitar Dimitrov | source = own work | date = 2010 | license = | other-version = }} Category:IFSTool screenshots 1
17:21, 18 July 2010 IFSTool-home-screen.png (file) 22 KB Vassia Atanassova (talk | contribs) {{upload | description = Home screen of IFSTool | author = Dimitar Dimitrov | source = own work | date = 2010 | license = | other-version = }} Category:IFSTool screenshots 1
18:47, 16 July 2010 IPMU2010-581–590-Atanassov.pdf (file) 152 KB Vassia Atanassova (talk | contribs) {{upload | description = "A New Approach to the Distances between Intuitionistic Fuzzy Sets" | author = Krassimir Atanassov | source = Proc. of IMPU`2010 (Eds.: E. Hüllermeier, R. Kruse, and F. Hoffmann), Part I, CCIS 80, pp. 581–590 | date = 1
09:21, 16 July 2010 IEEE-IS2010-286-289-Roeva,Pencheva,Atanassov,Shannon.pdf (file) 100 KB Vassia Atanassova (talk | contribs) {{upload | description = "Generalized Net Model of Selection Operator of Genetic Algorithms" | author = Olympia Roeva, Tania Pencheva, Krassimir Atanassov, Anthony Shannon | source = Proc. of 5th IEEE Int. Conf. on Intelligent Systems, 7-9 July 2010, L 1
14:28, 23 June 2010 NIFS-15-4-52-56.pdf (file) 144 KB Vassia Atanassova (talk | contribs)   1
23:31, 22 June 2010 NIFS-14-2-100-107.pdf (file) 229 KB Vassia Atanassova (talk | contribs) {{upload | description = Four extended level operators of membership/non-membership over intuitionistic fuzzy sets | author = Tsvetan Vassilev | source 1
22:15, 22 June 2010 NIFS-14-1.rar (file) 1,000 KB Vassia Atanassova (talk | contribs) {{upload | description = Notes on Intuitionistic Fuzzy Sets/14/1 | author = - | source = - | date = 2008 | license = | other-version = }} Category:RAR files 1
22:12, 22 June 2010 NIFS-15-4.rar (file) 839 KB Vassia Atanassova (talk | contribs) {{upload | description = Notes on Intuitionistic Fuzzy Sets/15/4 | author = - | source = - | date = 2009 | license = | other-version = }} Category:RAR files 1
22:08, 22 June 2010 NIFS-15-3.rar (file) 789 KB Vassia Atanassova (talk | contribs) {{upload | description = Notes on Intuitionistic Fuzzy Sets/15/3 | author = - | source = - | date = 2009 | license = | other-version = }} Category:RAR files 1
12:04, 21 June 2010 NIFS-13-2-008-017.pdf (file) 193 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Two- and three-parameter representation of intuitionistic fuzzy sets in the context of entropy and similarity | author = Eulalia Szmidt, Janusz Kacprzyk | source = Notes on Intuitionistic Fuzzy Sets/13/2 1
11:56, 21 June 2010 NIFS-13-2-001-007.pdf (file) 141 KB Vassia Atanassova (talk | contribs) {{upload | description = [[Issue:Componentwise decomposition of intuitionistic L-fuzzy integrals and interval-valued intuitionistic fuzzy integrals|Componentwise decomposition of intuitionistic L-fuzzy integrals and interval-valued intuitionistic fuzzy i 1
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