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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12:07, 30 October 2009 NIFS-15-3-25-32.pdf (file) 122 KB Vassia Atanassova (talk | contribs) {{upload | description = On the intuitionistic Q-fuzzy ideals of near-rings | author = Okram Ratnabala Devi | source = Notes on Intuitionistic Fuzzy Sets/15/3 | date = 2009 | licens 1
11:23, 30 October 2009 NIFS-15-1-42-48.pdf (file) 93 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:A note on properties of temporal intuitionistic fuzzy sets | author = Rangasami Parvathi, S. P. Geetha | source = Notes on Intuitionistic Fuzzy Sets/15/1 | date = 2009 | license = | other-version = } 1
11:01, 30 October 2009 NIFS-15-1-13-25.pdf (file) 162 KB Vassia Atanassova (talk | contribs) {{upload | description = [[Issue:A method to obtain trapezoidal approximations of intuitionistic fuzzy numbers from trapezoidal approximations of fuzzy sets|A method to obtain trapezoidal approximations of intuitionistic fuzzy numbers from trapezoidal ap 1
10:57, 30 October 2009 NIFS-15-2-18-23.pdf (file) 175 KB Vassia Atanassova (talk | contribs) fixed citation 3
21:01, 29 October 2009 NIFS-15-2-10-17.pdf (file) 762 KB Vassia Atanassova (talk | contribs) corrected 2
19:35, 29 October 2009 NIFS-15-2-33-36.pdf (file) 185 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Neural network for defining intuitionistic fuzzy sets in e-learning | author = Sotir Sotirov, Evdokia Sotirova, Daniela Orozova | source = Notes on Intuitionistic Fuzzy Sets/15/2 | date = 2009 | lic 1
19:32, 29 October 2009 NIFS-15-2-01-09.pdf (file) 222 KB Vassia Atanassova (talk | contribs) {{upload | description = A framework for a prototype of an intuitionistic fuzzy expert system | author = Diana Boyadzhieva | source = [[Notes on Intuitionistic Fuzzy Set 1
12:00, 29 October 2009 NIFS-15-1-36-41.pdf (file) 128 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Ergodic theorem on B-structures | author = Lenka Lašová, Magdaléna Renčová | source = Notes on Intuitionistic Fuzzy Sets/15/1 | date = 2009 | license = | other-version = }} 1
11:31, 29 October 2009 NIFS-15-1-01-12.pdf (file) 102 KB Vassia Atanassova (talk | contribs)   2
13:12, 28 October 2009 NIFS-15-3-20-24.pdf (file) 68 KB Vassia Atanassova (talk | contribs)   2
12:10, 28 October 2009 NIFS-15-3-14-19.pdf (file) 131 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:The homomorphism and anti-homomorphism of lower level subgroups of an intuitionistic antifuzzy subgroup | author = N. Palaniappan, K. Arjunan, M. S. Anitha | source = [[Notes on Intuitionistic Fuzzy Sets/ 1
19:46, 20 September 2009 NIFS-10-3-33-36.pdf (file) 127 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Symmetrical difference over intuitionistic fuzzy sets | author = Anton Antonov | source = "Notes on IFS", Volume 10 (2004) Number 3, pages 33-36 | date = 2004 | licen 1
15:39, 11 September 2009 FSS-1998-95-1-039-052.pdf (file) 645 KB Vassia Atanassova (talk | contribs) {{upload | description = Paper "Issue:Elements of intuitionistic fuzzy logic. Part 1" | author = Krassimir Atanassov, George Gargov | source = Fuzzy Sets and Systems, 95 (1998), pp 39-52 | date = 1998 | license = All rights reserved 1
14:35, 11 September 2009 NIFS-10-1-27-36.pdf (file) 657 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:An attempt to build an intuitionistic fuzzy Prolog machine | author = Krassimir Atanassov, Marin Marinov, Zlatko Zlatev | source = Notes on Intuitionistic Fuzzy Sets/10/1 | date = 2004 | license = 1
14:33, 11 September 2009 NIFS-10-1-18-26.pdf (file) 317 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Some properties of intuitionistic fuzzy metric spaces | author = Hong Yongfa, Jiang Changjun | source = Notes on Intuitionistic Fuzzy Sets/10/1 | date = 2004 | license = | other-version = }} [[Categ 1
14:32, 11 September 2009 NIFS-10-1-01-06.pdf (file) 339 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Normalization of intuitionistic fuzzy relational databases | author = M. Afshar Alam, Sharfuddin Ahmad, Ranjit Biswas | source = Notes on Intuitionistic Fuzzy Sets/10/1 | date = 2004 | license = | 1
12:14, 11 September 2009 FSS-1993-53-2-121-128.pdf (file) 444 KB Vassia Atanassova (talk | contribs) {{upload | description = Paper "Issue:Intuitionistic fuzzy Prolog" | author = Krassimir Atanassov, Christo Georgiev | source = Fuzzy Sets and Systems, 53 (1993), pp 121-128 | date = 1993 | license = All rights reserved on the behalf 1
14:27, 6 September 2009 FSS-1994-61-2-137-142.pdf (file) 200 KB Vassia Atanassova (talk | contribs) {{upload | description = Paper "New operations defined over intuitionistic fuzzy sets" | author = Krassimir Atanassov | source = Fuzzy Sets and Systems, 61 (1994), pp 137-142 | date = 1994 | license = All rights reserved on the behalf o 1
14:08, 6 September 2009 FSS-1989-33-1-037-045.pdf (file) 375 KB Vassia Atanassova (talk | contribs) {{upload | description = Paper "Issue:More on intuitionistic fuzzy sets" | author = Krassimir Atanassov | source = Fuzzy Sets and Systems, 33 (1989), pp 37-45 | date = 1989 | license = All rights reserved on the behalf of the authors an 1
13:54, 6 September 2009 FSS-1989-31-3-343-349.pdf (file) 660 KB Vassia Atanassova (talk | contribs) {{upload | description = Paper "Issue:Interval valued intuitionistic fuzzy sets" | author = Krassimir Atanassov, George Gargov | source = Fuzzy Sets and Systems, 31 (1989), pp 343-349 | date = 1989 | license = All rights reserved on 1
09:49, 6 September 2009 NIFS-01-1-61-65.pdf (file) 325 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Intuitionistic fuzzy interpretation of two-level classifiers | author = Ognian Asparoukhov | source = Notes on Intuitionistic Fuzzy Sets/01/1 | date = 1995 | license = | other-version = }} [[Category:PDF 1
14:11, 18 August 2009 NIFS-10-1-13-17.pdf (file) 205 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Mathematical techniques to convert intuitionistic fuzzy sets into fuzzy sets | author = Abdul Quaiyum Ansari, Shadab Siddiqui, Javed Alvi | source = Notes on Intuitionistic Fuzzy Sets/10/1 | date = 2 1
12:21, 13 August 2009 NIFS-01-1-74-76.pdf (file) 149 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:The intuitionistic fuzzy set approach in the psychological research | author = Bojanka Guguljanova | source = Notes on Intuitionistic Fuzzy Sets/01/1 | date = 1995 | license = | other-version = }} [[C 1
12:18, 13 August 2009 NIFS-01-1-70-73.pdf (file) 229 KB Vassia Atanassova (talk | contribs) ({{upload | description = Issue:Application of intuitionistic fuzzy set in plant tissue culture and in vitro selection | author = Deniza Chakarska, Lyudmil Antonov | source = Notes on Intuitionistic Fuzzy Sets/01/1 | date = 1995 | 1
12:15, 13 August 2009 NIFS-01-1-77-78.pdf (file) 54 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Applicability of the intuitionistic fuzzy set approach to musical language | author = Luben Botusharov | source = Notes on Intuitionistic Fuzzy Sets/01/1 | date = 1995 | license = | other-version = }} [[ 1
12:10, 13 August 2009 NIFS-01-1-66-69.pdf (file) 214 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:An intuitionistic fuzzy sets application to the k-nn method | author = Stefan Hadjitodorov | source = Notes on Intuitionistic Fuzzy Sets/01/1 | date = 1995 | license = | other-version = }} [[Category:PDF 1
12:08, 13 August 2009 NIFS-01-1-56-60.pdf (file) 218 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Intuitionistic fuzzy interpretation of two-level classifiers | author = Ognian Asparoukhov | source = Notes on Intuitionistic Fuzzy Sets/01/1 | date = 1995 | license = | other-version = }} [[Category:PDF 2
12:06, 13 August 2009 NIFS-01-1-51-55.pdf (file) 192 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:A method for inference in approximate reasoning based on normal intuitionistic fuzzy sets | author = Humberto Bustince Sola, Pedro Burillo Lopez, Victoria Mohedano | source = [[Notes on Intuitionistic Fuz 1
12:05, 13 August 2009 NIFS-01-1-48-50.pdf (file) 105 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:On intuitionistic fuzzy weight production systems | author = Stefka Stoeva | source = Notes on Intuitionistic Fuzzy Sets/01/1 | date = 1995 | license = | other-version = }} Category:PDF files 1
11:58, 13 August 2009 NIFS-01-1-42-47.pdf (file) 237 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Handling multicriteria fuzzy decision making problems based on intuitionistic fuzzy sets | author = Humberto Bustince Sola | source = Notes on Intuitionistic Fuzzy Sets/01/1 | date = 1995 | license = | ot 1
11:58, 13 August 2009 NIFS-01-1-40-41.pdf (file) 85 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Decision making methods based on elements of intuitionistic fuzzy sets and their software implementation | author = Plamen Angelov, Ognian Asparoukhov, Krassimir Atanassov, Pedro Burillo Lopez, [[Humbe 1
11:55, 13 August 2009 NIFS-01-1-36-39.pdf (file) 211 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:On probability and independence in intuitionistic fuzzy set theory | author = Tadeusz Gerstenkorn, Jacek Manko | source = Notes on Intuitionistic Fuzzy Sets/01/1 | date = 1995 | license = | other-vers 1
11:54, 13 August 2009 NIFS-01-1-32-35.pdf (file) 179 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Intuitionistic fuzzy graphs from α-, β-, and (α, β)- levels | author = Anthony Shannon, Krassimir Atanassov | source = Notes on Intuitionistic Fuzzy Sets/01/1 | date = 1995 | license = | other-ver 1
11:51, 13 August 2009 NIFS-01-1-29-31.pdf (file) 118 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:On a new geometrical interpretation of the intuitionistic fuzzy sets | author = Ivan Antonov | source = Notes on Intuitionistic Fuzzy Sets/01/1 | date = 1995 | license = | other-version = }} [[Category:P 1
11:28, 13 August 2009 NIFS-01-1-27-28.pdf (file) 75 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:How two matrices can be compared? | author = Lilija Atanassova | source = Notes on Intuitionistic Fuzzy Sets/01/1 | date = 1995 | license = | other-version = }} Category:PDF files 1
11:27, 13 August 2009 NIFS-01-1-25-26.pdf (file) 66 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:On an intuitionistic fuzzy norm | author = Dimitar Tanev | source = Notes on Intuitionistic Fuzzy Sets/01/1 | date = 1995 | license = | other-version = }} Category:PDF files 1
11:26, 13 August 2009 NIFS-01-1-17-24.pdf (file) 392 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Ideas for intuitionistic fuzzy equations, inequalities and optimization | author = Krassimir Atanassov | source = Notes on Intuitionistic Fuzzy Sets/01/1 | date = 1995 | license = | other-version = }} [[ 1
11:25, 13 August 2009 NIFS-01-1-05-16.pdf (file) 505 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:A theorem for constructing interval-valued intuitionistic fuzzy sets from intuitionistic fuzzy sets | author = Humberto Bustince Sola, Pedro Burillo Lopez | source = [[Notes on Intuitionistic Fuzzy Sets/01/1] 1
09:46, 13 August 2009 NIFS-01-1-01-04.pdf (file) 157 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:On the intuitionistic fuzzy logic operations | author = George Gargov, Krassimir Atanassov | source = Notes on Intuitionistic Fuzzy Sets/01/1 | date = 1995 | license = | other-version = }} [[Category 1
17:34, 22 July 2009 NIFS-04-2-34-41.pdf (file) 378 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Intuitionistic fuzzy database | author = Supriya Kumar De, Ranjit Biswas, Akhil Ranjan Roy | source = Notes on Intuitionistic Fuzzy Sets/04/2 | date = 1998 | license = | other-version = }} [[Cat 1
14:02, 21 July 2009 NIFS-03-5-123-125.pdf (file) 145 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Intuitionistic fuzzy interpretation of Kun's axiom | author = Krassimir Atanassov | source = Notes on Intuitionistic Fuzzy Sets/03/5 | date = 1997 | license = | other-version = }} Category:PDF files 1
13:55, 21 July 2009 NIFS-03-5-111-122.pdf (file) 513 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Intuitionistic fuzzy linguistic quantifiers | author = Eulalia Szmidt, Janusz Kacprzyk | source = Notes on Intuitionistic Fuzzy Sets/03/5 | date = 1997 | license = | other-version = }} [[Category:PD 1
13:40, 21 July 2009 NIFS-03-5-foreword.pdf (file) 198 KB Vassia Atanassova (talk | contribs) {{upload | description = Foreword of Notes on Intuitionistic Fuzzy Sets/03/5 | author = Krassimir Atanassov, Humberto Bustince | source = | date = 1997 | license = | other-version = }} 1
12:59, 21 July 2009 NIFS-03-4-14-20.pdf (file) 209 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:On intuitionistic fuzzy sets | author = Supriya Kumar De, Ranjit Biswas, Akhil Ranjan Roy | source = Notes on Intuitionistic Fuzzy Sets/03/4 | date = 1997 | license = | other-version = }} [[Cate 1
12:24, 21 July 2009 NIFS-03-4-21-27.pdf (file) 301 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:About the intuitionistic fuzzy set generators | author = Humberto Bustince, Victoria Mohedano | source = Notes on Intuitionistic Fuzzy Sets/03/4 | date = 1997 | license = | other-version = }} [[Cate 1
20:39, 20 July 2009 Generalized-nets-and-cognitive-science-main-ideas-flowchart.png (file) 22 KB Vassia Atanassova (talk | contribs) {{upload | description = Flowchart of main ideas in the book Generalized Nets and Cognitive Science | author = Vassia Atanassova | source = Generalized Nets and Cognitive Science, page vi | date = 2009 | license = | other-version = }} [[C 1
11:42, 20 July 2009 Generalized-nets-decision-making-pattern-recognition-cover.png (file) 2.71 MB Vassia Atanassova (talk | contribs) {{upload | description = Cover of book "Generalized Nets, Decision Making and Pattern Recognition", | author = Krassimir Atanassov, Georgi Gluhchev, Stefan Hadjitodorov, Janusz Kacprzyk, Anthony Shannon, Eulalia Szmidt, [[Va 1
11:40, 20 July 2009 Generalized-nets-and-pattern-recognition-cover.png (file) 1.77 MB Vassia Atanassova (talk | contribs) {{upload | description = Cover of book "Generalized Nets and Pattern Recognition", | author = Krassimir Atanassov, Georgi Gluhchev, Stefan Hadjitodorov, Anthony Shannon, Vassil Vassilev | source = KvB Visual Concepts, monograph 1
11:05, 8 July 2009 NIFS-08-3-057-065.pdf (file) 193 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Representing and querying temporal workflow schemas | author = Hathal Al-Roki, Panagiotis Chountas, Ilias Petrounias, Vassilis Kodogiannis, Boyan Kolev | source = Notes on Intuitionistic Fuzzy Sets/08/3 | date = 1
08:49, 5 June 2009 Vidove-deinosti-EN.png (file) 30 KB Vassia Atanassova (talk | contribs) new version 2
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