New submissions to International Journal "Notes on Intuitionistic Fuzzy Sets" are temporarily suspended from 1 June until 1 September 2026.
Read here the full announcement.
Open Call for Papers: 29th International Conference on Intuitionistic Fuzzy Sets • 6–7 November 2026 • Sofia, Bulgaria / Online
EXTENDED deadline for submissions: 15 June 2026.

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Date Name Thumbnail Size User Description Versions
17:37, 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
10:10, 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
20:49, 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
18:44, 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
17:47, 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
17:46, 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
22:50, 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
21:25, 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
18:21, 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
18:18, 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
17:57, 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
17:56, 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
14:58, 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
14:57, 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
14:56, 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
14:54, 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
14:05, 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
16:11, 27 May 2012 Gn-test-im.gif (file) 2 KB Vassia Atanassova (talk | contribs)   1
15:42, 27 May 2012 Gn-test-1d.gif (file) 2 KB Vassia Atanassova (talk | contribs) Category:GN tests 1
15:42, 27 May 2012 Gn-test-1c.gif (file) 2 KB Vassia Atanassova (talk | contribs) Category:GN tests 1
15:42, 27 May 2012 Gn-test-1b.gif (file) 3 KB Vassia Atanassova (talk | contribs) Category:GN tests 1
15:41, 27 May 2012 Gn-test-1a.gif (file) 2 KB Vassia Atanassova (talk | contribs) Category:GN tests 1
12:06, 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
12:12, 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
20:28, 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
20:28, 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
20:27, 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
20:27, 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
20:26, 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
20:25, 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
20:20, 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
23:41, 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
23:17, 21 February 2012 NIFS-17-3-25-29.pdf (file) 142 KB Vassia Atanassova (talk | contribs)   1
23:08, 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
23:02, 21 February 2012 NIFS-17-3-11-14.pdf (file) 127 KB Vassia Atanassova (talk | contribs) {{upload | description = Second Zadeh's intuitionistic fuzzy implication | author = Krassimir Atanassov | source = Notes on Intuitionistic Fuzzy Sets/17/3 | date = 2011 | license = | oth 1
23:02, 21 February 2012 NIFS-17-3-01-10.pdf (file) 112 KB Vassia Atanassova (talk | contribs) {{upload | description = Intuitionistic fuzzy sets: Some new results | author = Rajkumar Verma, Bhu Dev Sharma | source = Notes on Intuitionistic Fuzzy Sets/17/3 | date = 2011 | license = 1
10:55, 16 January 2012 16ICIFS-2012-CfP.pdf (file) 56 KB Vassia Atanassova (talk | contribs) {{upload | description = Call for Papers for the 16<sup>th</sup> Int. Conf. on IFS | author = Krassimir Atanassov | source = own work | date = 2012 | license = | other-version = }} 1
10:50, 16 January 2012 16ICIFS-2012-Registration-form.doc (file) 54 KB Vassia Atanassova (talk | contribs) {{upload | description = Registration form for the 16<sup>th</sup> Int. Conf. on IFS | author = | source = own work | date = 2012 | license = | other-version = }} 1
17:58, 2 January 2012 NIFS-17-2-44-51.pdf (file) 48 KB Vassia Atanassova (talk | contribs)   2
17:48, 2 January 2012 NIFS-17-2-68-74.pdf (file) 150 KB Vassia Atanassova (talk | contribs)   1
14:39, 2 January 2012 NIFS-17-2-82-96.pdf (file) 169 KB Vassia Atanassova (talk | contribs) {{upload | description = Intuitionistic fuzzy rw-closed sets and intuitionistic fuzzy rw-continuity | author = S. S. Thakur, Jyoti Pandey Bajpai | source = Not 1
14:39, 2 January 2012 NIFS-17-2-75-81.pdf (file) 135 KB Vassia Atanassova (talk | contribs) {{upload | description = Intuitionistic fuzzy estimation of the ant colony optimization starting points: Part 2 | author = Stefka Fidanova, [[Pencho Mar 1
14:38, 2 January 2012 NIFS-17-2-65-67.pdf (file) 117 KB Vassia Atanassova (talk | contribs) {{upload | description = On Łukasiewicz's intuitionistic fuzzy subtraction | author = Beloslav Riečan, Krassimir Atanassov | source = Notes on Intuitionistic Fuzzy Sets, Vol. 17, 2 1
14:37, 2 January 2012 NIFS-17-2-52-64.pdf (file) 205 KB Vassia Atanassova (talk | contribs) {{upload | description = Intuitionistic fuzzy optimization technique for the solution of an EOQ model | author = Susovan Chakrabortty, Madhumangal Pal, [[Pra 1
14:36, 2 January 2012 NIFS-17-2-35-43.pdf (file) 171 KB Vassia Atanassova (talk | contribs) {{upload | description = On α- and α*- separation axioms in intuitionistic fuzzy topological spaces | author = Rekha Srivastava, Amit Kumar Singh | sourc 1
14:36, 2 January 2012 NIFS-17-2-25-34.pdf (file) 210 KB Vassia Atanassova (talk | contribs) {{upload | description = Pearson's coefficient between intuitionistic fuzzy sets | author = Eulalia Szmidt, Janusz Kacprzyk, Paweł Bujnowski | source = Notes on Intuitionis 1
14:35, 2 January 2012 NIFS-17-2-17-24.pdf (file) 164 KB Vassia Atanassova (talk | contribs) {{upload | description = On intuitionistic fuzzy tree-interpretations by index matrices | author = Rangasamy Parvathi, Anthony Shannon, Panagiotis Chountas, [[Krassimi 1
14:34, 2 January 2012 NIFS-17-2-08-16.pdf (file) 151 KB Vassia Atanassova (talk | contribs) {{upload | description = On some two-parametric intuitionistic fuzzy implications | author = Piotr Dworniczak | source = Notes on Intuitionistic Fuzzy Sets, Vol. 17, 2011, No. 2, 8 1
14:34, 2 January 2012 NIFS-17-2-01-07.pdf (file) 153 KB Vassia Atanassova (talk | contribs) {{upload | description = On intuitionistic fuzzy multi-dimensional sets. Part 4 | author = Krassimir Atanassov, Eulalia Szmidt, Janusz Kacprzyk | source = Notes on Intuitionis 1
20:30, 24 November 2011 GN-models-in-medicine-cover.jpg (file) 660 KB Vassia Atanassova (talk | contribs) {{upload | description = Generalized Net Models in Medicine | author = Anthony Shannon, Joseph Sorsich and Krassimir Atanassov | source = "Prof. M. Drinov" Publishing House of the Bulgarian Academy of Sciences | date = 1996 | license 1
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