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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20:22, 14 January 2013 NIFS-18-3-68-74.pdf (file) 116 KB Vassia Atanassova (talk | contribs) {{upload | description = Some properties of intuitionistic fuzzy primary and semiprimary ideals |author = M. Palanivelrajan and S. Nandakumar | source = [[Notes o 1
20:18, 14 January 2013 NIFS-18-3-61-67.pdf (file) 179 KB Vassia Atanassova (talk | contribs) {{upload | description = A generalized net model of university subjects rating with intuitionistic fuzzy estimations |author = Antony Shannon, [[B 1
20:18, 14 January 2013 NIFS-18-3-52-60.pdf (file) 166 KB Vassia Atanassova (talk | contribs) {{upload | description = Properties of intuitionistic fuzzy line graphs |author = M. Akram and R. Parvathi | source = Notes on Intuitionistic Fuzzy Sets/18/3 | date = 2012 | licen 1
20:16, 14 January 2013 NIFS-18-3-49-51.pdf (file) 35 KB Vassia Atanassova (talk | contribs) {{upload | description = A new formula for de-i-fuzzification of intuitionistic fuzzy sets |author = Vassia Atanassova and Sotir Sotirov | source = [[Notes on Intuitio 1
20:15, 14 January 2013 NIFS-18-3-39-48.pdf (file) 197 KB Vassia Atanassova (talk | contribs) {{upload | description = An experimental analysis of some measures of information and knowledge for intuitionistic fuzzy sets |author = [[Eul 1
20:15, 14 January 2013 NIFS-18-3-30-38.pdf (file) 168 KB Vassia Atanassova (talk | contribs) {{upload | description = [[Issue:On the intuitionistic fuzzy sets with metric type relation between the membership and non-membership functions|On the intuitionistic fuzzy sets with metric type relation between the membership and non-membership functions 1
20:14, 14 January 2013 NIFS-18-3-23-29.pdf (file) 141 KB Vassia Atanassova (talk | contribs) {{upload | description = A note on the unconscientious experts’ evaluations in the intuitionistic fuzzy environment |author = Piotr Dworniczak 1
20:13, 14 January 2013 NIFS-18-3-16-22.pdf (file) 140 KB Vassia Atanassova (talk | contribs) {{upload | description = On the operators partially extending the extended intuitionistic fuzzy operators from modal type |author = [[Krassimir At 1
20:12, 14 January 2013 NIFS-18-3-08-15.pdf (file) 179 KB Vassia Atanassova (talk | contribs) {{upload | description = Absolute value and limit of the function defined on IF sets | author = Alžbeta Michalíková | source = Notes on Intuitionistic Fuzzy Sets/18/3 | 1
20:11, 14 January 2013 NIFS-18-3-01-07.pdf (file) 154 KB Vassia Atanassova (talk | contribs) {{upload | description = Intuitionistic fuzzy integrals | author = Radoslav Tcvetkov | source = Notes on Intuitionistic Fuzzy Sets/18/3 | date = 2012 | license = | other-version = }} [[Category:PDF 1
16:40, 9 December 2012 NIFS-18-2-37-50.pdf (file) 538 KB Vassia Atanassova (talk | contribs) {{upload | description = Intuitionistic Fuzzy Delphi Method: More realistic and interactive forecasting tool | author = Tapan Kumar Roy and [[Arindam Garai 1
16:40, 9 December 2012 NIFS-18-2-31-36.pdf (file) 164 KB Vassia Atanassova (talk | contribs) {{upload | description = Decomposition theorems of an intuitionistic fuzzy set | author = Shiny Jose and Sunny Kuriakose | source = Notes on Intuitionistic Fuzzy Sets/18/2, 31 1
16:39, 9 December 2012 NIFS-18-2-26-30.pdf (file) 118 KB Vassia Atanassova (talk | contribs) {{upload | description = On two modifications of the intuitionistic fuzzy implication →<sub>@</sub> | author = Lilija Atanassova | source = [[Notes on Intuitionistic Fuz 1
16:39, 9 December 2012 NIFS-18-2-21-25.pdf (file) 381 KB Vassia Atanassova (talk | contribs) {{upload | description = Characterization of level sets of intuitionistic ''L''-fuzzy semi filter of lattices | author = A. Maheswari, S. Karthikeyan and 1
16:38, 9 December 2012 NIFS-18-2-13-20.pdf (file) 204 KB Vassia Atanassova (talk | contribs) {{upload | description = More on Intuitionistic fuzzy relations | author = Annie Varghese and Sunny Kuriakose | source = Notes on Intuitionistic Fuzzy Sets/18/2, 13-20 | date = 2012 | licen 1
16:37, 9 December 2012 NIFS-18-2-01-12.pdf (file) 135 KB Vassia Atanassova (talk | contribs) {{upload | description = A property of the intuitionistic fuzzy implications | author = Krassimir Atanassov | source = Notes on Intuitionistic Fuzzy Sets/18/2, 1-12 | date = 2012 | 1
16:37, 9 December 2012 NIFS-18-2-51-52.pdf (file) 98 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:A variant of Craig's interpolation theorem for intuitionistic fuzzy formulas. Part 2 | author = Krassimir Atanassov | source = Notes on Intuitionistic Fuzzy Sets/18/2, 51-52 | date = 2012 | license = | ot 1
09:10, 3 August 2012 NIFS-10-2-01-19.pdf (file) 6.24 MB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Some operations on intuitionistic fuzzy sets of second type | author = Parvathi Rangasamy, N. Palaniappan | source = Notes on Intuitionistic Fuzzy Sets/10/2 | date = 2004 | license = | other-version = 1
19:49, 2 August 2012 NIFS-01-2-104-115.pdf (file) 4.65 MB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Concept lattices associated with interval-valued l-fuzzy contexts | author = Ana Burusco, Ramon Fuentes-González | source = Notes on Intuitionistic Fuzzy Sets/01/2 | date = 1995 | license = | other-v 1
17:44, 2 August 2012 NIFS-01-2-123-129.pdf (file) 3.33 MB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Intuitionistic fuzzy optimization | author = Plamen Angelov | source = Notes on Intuitionistic Fuzzy Sets/01/2 | date = 1995 | license = | other-version = }} 1
16:47, 2 August 2012 NIFS-01-2-132-136.pdf (file) 2.74 MB Vassia Atanassova (talk | contribs) {{upload | description = Intuitionistic fuzzy formulation of risk assessment by mathematical programming - based classification | author = [ 1
16:46, 2 August 2012 NIFS-01-2-116-118.pdf (file) 1.21 MB Vassia Atanassova (talk | contribs) {{upload | description = Issue:A new geometrical interpretation of some concepts in the intuitionistic fuzzy logics | author = Stefan Dantchev | source = Notes on Intuitionistic Fuzzy Sets/01/2 | date = 1995 | license = | other-version 1
21:50, 25 July 2012 NIFS-01-2-119-122.pdf (file) 809 KB Vassia Atanassova (talk | contribs) {{upload | description = Paper Issue:Remark on the tautologies of the intuitionistic fuzzy logics | author = Krassimir Atanassov | source = Notes on Intuitionistic Fuzzy Sets/01/2 | date = 1995 | license = | other-version = }} [[Categ 1
20:25, 25 July 2012 NIFS-18-1-25-36.pdf (file) 138 KB Vassia Atanassova (talk | contribs) {{upload | description = Paper Intuitionistic fuzzy completely weakly generalized continuous mappings | author = P. Rajarajeswari and R. Krishna Moorthy | source = 1
17:21, 24 July 2012 NIFS-01-2-130-131.pdf (file) 1.09 MB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Linear programming with intuitionistic fuzzy objective | author = Toader Buhaescu | source = "Notes on IFS", Volume 1 (1995) Number 2, pages 130—131 | date = 1995 | 1
17:18, 24 July 2012 NIFS-01-2-093-103.pdf (file) 4.45 MB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Orderings in the referential set induced by an intuitionistic fuzzy relation | author = Pedro Burillo Lopez, Humberto Bustince Sola | source = [[Notes on Intuitionistic Fuzzy Sets/01/2|"Notes on IFS", Volume 1
16:57, 24 July 2012 NIFS-01-2-087-092.pdf (file) 2.61 MB Vassia Atanassova (talk | contribs) {{upload | description = Issue:On the intuitionistic fuzzy relations | author = Pedro Burillo Lopez, Humberto Bustince Sola, Krassimir Atanassov | source = [[Notes on Intuitionistic Fuzzy Sets/01/2|"Notes on IFS", Volume 1 (1995) Numbe 1
16:56, 24 July 2012 NIFS-01-2-085-086.pdf (file) 938 KB Vassia Atanassova (talk | contribs) {{upload | description = Remarks on the intuitionistic fuzzy sets. Part 2 | author = Krassimir Atanassov, Darinka Stoyanova | source = [[Notes on Intuitionistic Fuzzy Sets/01/2|"Notes o 1
13:58, 21 July 2012 NIFS-18-1-48-56.pdf (file) 170 KB Vassia Atanassova (talk | contribs) {{upload | description = Paper Intuitionistic fuzzy linear optimization | author = R. Parvathi and C. Malathi | source = Notes on Intuitionistic Fuzzy Sets/18/1 | date = 2012 | license = 1
13:57, 21 July 2012 NIFS-18-1-37-47.pdf (file) 99 KB Vassia Atanassova (talk | contribs) {{upload | description = Paper [[Issue:A new similarity measure of intuitionistic fuzzy sets and its application to estimate the priority weights from intuitionistic preference relations|A new similarity measure of intuitionistic fuzzy sets and its appli 1
13:56, 21 July 2012 NIFS-18-1-19-24.pdf (file) 163 KB Vassia Atanassova (talk | contribs) {{upload | description = Paper Issue:Intuitionistic fuzzy completely weakly generalized continuous mappings | author = P. Rajarajeswari and R. Krishna Moorthy | source = Notes on Intuitionistic Fuzzy Sets/18/1 | date = 2012 | license 2
13:54, 21 July 2012 NIFS-18-1-05-18.pdf (file) 197 KB Vassia Atanassova (talk | contribs) {{upload | description = Paper [[Issue: Generalized intuitionistic fuzzy contra continuity|]] | author = E. Roja, M. K. Uma and R. Dhavaseelan | source = Notes on Intuitionistic Fuzzy Sets/18/1 | date = 2012 | license = | other-vers 1
13:05, 21 July 2012 NIFS-18-1-01-04.pdf (file) 124 KB Vassia Atanassova (talk | contribs) {{upload | description = Paper Issue:Properties of some operations defined over intuitionistic fuzzy sets | author = Rangasamy Parvathi, Beloslav Riečan]] and Krassimir Atanassov | source = Notes on Intuitionistic Fuzzy Sets/18/1 | d 1
15:11, 27 May 2012 Gn-test-im.gif (file) 2 KB Vassia Atanassova (talk | contribs)   1
14:42, 27 May 2012 Gn-test-1d.gif (file) 2 KB Vassia Atanassova (talk | contribs) Category:GN tests 1
14:42, 27 May 2012 Gn-test-1c.gif (file) 2 KB Vassia Atanassova (talk | contribs) Category:GN tests 1
14:42, 27 May 2012 Gn-test-1b.gif (file) 3 KB Vassia Atanassova (talk | contribs) Category:GN tests 1
14:41, 27 May 2012 Gn-test-1a.gif (file) 2 KB Vassia Atanassova (talk | contribs) Category:GN tests 1
11:06, 22 May 2012 On-IFS-Theory-2012-cover.jpg (file) 122 KB Vassia Atanassova (talk | contribs) {{upload | description = Cover of book "On Intuitionistic Fuzzy Sets Theory" by Krassimir Atanassov, Springer Physica-Verlag, 2012 | author = - | source = scan | date = 2012 | license = All rights reserved | other-version = }} [[Category:B 1
11:12, 17 March 2012 Fs.gif (file) 7 KB Galia (talk | contribs) source: http://www.doc.ic.ac.uk/~nd/surprise_96/journal/vol4/sbaa/report.fuzzysets.html 1
19:28, 28 February 2012 NIFS-17-4-39-44.pdf (file) 85 KB Vassia Atanassova (talk | contribs) {{upload | description = Classification of the students' intuitionistic fuzzy estimations by a 3-dimensional self organizing map | author 1
19:28, 28 February 2012 NIFS-17-4-29-38.pdf (file) 576 KB Vassia Atanassova (talk | contribs) {{upload | description = Intuitionistic fuzzy estimations of biological interactions | author = Hristo Aladjov | source = NIFS/17/4 | date = 2011 | license = | other-ve 1
19:27, 28 February 2012 NIFS-17-4-21-28.pdf (file) 174 KB Vassia Atanassova (talk | contribs) {{upload | description = Generalized nets with places having intuitionistic fuzzy capacities | author = Krassimir Atanassov, Vassia Atanassova, [[Panagiotis Chountas] 1
19:27, 28 February 2012 NIFS-17-4-16-20.pdf (file) 70 KB Vassia Atanassova (talk | contribs) {{upload | description = [[Issue:Generalized net model of the process of defining intuitionistic fuzzy estimation in petroleum recognition with neural networks|Generalized net model of the process of defining intuitionistic fuzzy estimation in petroleum 1
19:26, 28 February 2012 NIFS-17-4-11-15.pdf (file) 144 KB Vassia Atanassova (talk | contribs) {{upload | description = Automatic verification of properties of intuitionistic fuzzy connectives via Mathematica | author = Trifon Trifonov | source 1
19:25, 28 February 2012 NIFS-17-4-05-10.pdf (file) 152 KB Vassia Atanassova (talk | contribs) {{upload | description = The inclusion-exclusion principle for product operations on IF-events | author = Mária Kuková | source = NIFS/17/4 | date = 2011 | lice 1
19:20, 28 February 2012 NIFS-17-4-01-04.pdf (file) 120 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:On Zadeh's intuitionistic fuzzy subtraction | author = Beloslav Riečan and Krassimir Atanassov | source = NIFS/17/4 | date = 2011 | license = | other-version = }} Category:PDF files 1
22:41, 21 February 2012 NIFS-17-3-30-40.pdf (file) 433 KB Vassia Atanassova (talk | contribs) {{upload | description = Intuitionistic fuzzy contra semi-generalized continuous mappings | author = R. Santhi, K. Arun Prakash | source = Notes on Intuitionistic Fuzzy 1
22:17, 21 February 2012 NIFS-17-3-25-29.pdf (file) 142 KB Vassia Atanassova (talk | contribs)   1
22:08, 21 February 2012 NIFS-17-3-15-24.pdf (file) 179 KB Vassia Atanassova (talk | contribs) {{upload | description = On intuitionistic fuzzy ideals in Γ-near-rings | author = N. Palaniappan, P. S. Veerappan and D. Ezhilmaran | source = Notes on Intuitionistic Fuzzy Sets/17 1
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