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
22:44, 7 September 2022 NIFS-28-3-334-342.pdf (file) 485 KB Vassia Atanassova (talk | contribs) == Summary == {{upload | description = Digital transformation project selection using Interval Valued Type-2 Intuitionistic Fuzzy TOPSIS | author = Başar Öztayşi, Sezi Cevik Onar, Cengiz Kahraman and Selcuk Cebi | source = Notes on Intuitionistic Fuzzy Sets/28/3 | date = 2022 | license = | other-version = }} Category:PDF files 1
22:28, 7 September 2022 NIFS-28-3-280-292.pdf (file) 235 KB Vassia Atanassova (talk | contribs) == Summary == {{upload | description = Issue:A study on intuitionistic fuzzy 2-absorbing primary ideals in Г-ring | author = P. K. Sharma, Hem Lata and Nitin Bharadwaj | source = Notes on Intuitionistic Fuzzy Sets/28/3 | date = 2022 | license = | other-version = }} Category:PDF files 1
22:04, 7 September 2022 NIFS-28-3-193-202.pdf (file) 118 KB Vassia Atanassova (talk | contribs) == Summary == {{upload | description = To what extent can intuitionistic fuzzy options be ranked? | author = Eulalia Szmidt, Janusz Kacprzyk and Paweł Bujnowski | source = Notes on Intuitionistic Fuzzy Sets/28/3 | date = 2022 | license = | other-version = }} Category:PDF files 1
21:29, 7 September 2022 NIFS-28-3-228-237.pdf (file) 199 KB Vassia Atanassova (talk | contribs) == Summary == {{upload | description = Issue:Convergence in measure of intuitionistic fuzzy observables | author = Katarína Čunderlíková and Dušana Babicová | source = Notes on Intuitionistic Fuzzy Sets/28/3 | date = 2022 | license = | other-version = }} Category:PDF files 1
21:17, 7 September 2022 NIFS-28-3-223-227.pdf (file) 131 KB Vassia Atanassova (talk | contribs) == Summary == {{upload | description = Issue:The ⊖ operation over intuitionistic fuzzy pairs | author = Peter Vassilev and Simeon Ribagin | source = Notes on Intuitionistic Fuzzy Sets/28/3 | date = 2022 | license = | other-version = }} Category:PDF files 1
17:34, 7 September 2022 NIFS-28-3-203-210.pdf (file) 152 KB Vassia Atanassova (talk | contribs) == Summary == {{upload | description = How to represent uncertainty via qudits: Probability distributions, regular, intuitionistic and picture fuzzy sets, F-transforms, etc. | author = Olga Kosheleva and Vladik Kreinovich | source = Notes on Intuitionistic Fuzzy Sets/28/3 | date = 2022 | license = | other-version = }} [[Category:... 1
16:40, 7 September 2022 NIFS-28-3-343-352.pdf (file) 913 KB Vassia Atanassova (talk | contribs) == Summary == {{upload | description = Issue:Clustering stock price volatility using intuitionistic fuzzy sets | author = Georgy Urumov and Panagiotis Chountas | source = Notes on Intuitionistic Fuzzy Sets/28/3 | date = 2022 | license = | other-version = }} Category:PDF files 1
15:59, 7 September 2022 NIFS-28-3-319-333.pdf (file) 937 KB Vassia Atanassova (talk | contribs) == Summary == {{upload | description = Issue:Quantifying individual scientific output in terms of a new intuitionistic fuzzy sets based author-level metrics (IFALM) | author = Vassia Atanassova | source = Notes on Intuitionistic Fuzzy Sets/28/3 | date = 2022 | license = | other-version = }} Category:PDF files 1
15:58, 7 September 2022 NIFS-28-3-306-318.pdf (file) 651 KB Vassia Atanassova (talk | contribs) == Summary == {{upload | description = Issue:Some notes on intuitionistic fuzzy equivalence relations and their use on real data | author = Alžbeta Michalíková | source = Notes on Intuitionistic Fuzzy Sets/28/3 | date = 2022 | license = | other-version = }} Category:PDF files 1
15:34, 7 September 2022 NIFS-28-3-211-222.pdf (file) 193 KB Vassia Atanassova (talk | contribs) {{upload | description = On the intuitionistic fuzzy modal feeble topological structures | author = Krassimir Atanassov | source = Notes on Intuitionistic Fuzzy Sets/28/3 | date = 2022 | license = | other-version = }} Category:PDF files 1
10:47, 7 July 2022 Crossref.jpg (file) 18 KB Vassia Atanassova (talk | contribs) Category:Logos 1
20:15, 9 June 2022 NIFS-28-2-149-160.pdf (file) 549 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Derivative-free Newton's method for solving intuitionistic fuzzy nonlinear equations with an application | author = A. O. Umar, M. Y. Waziri and A. U. Moyi | source = Notes on Intuitionistic Fuzzy Sets, Volume 28 (2022), Number 2, pages 149–160 | date = 2022 | license = | other-version = }} Category:PDF files 1
20:02, 9 June 2022 NIFS-28-2-120-131.pdf (file) 950 KB Vassia Atanassova (talk | contribs) == Summary == {{upload | description = Issue:Primary interval-valued intuitionistic fuzzy ''M'' group | author = G. Prasannavengeteswari, K. Gunasekaran and S. Nandakumar | source = Notes on Intuitionistic Fuzzy Sets, Volume 28 (2022), Number 2, pages 120-131 | date = 2022 | license = | other-version = }} Category:PDF files 1
19:50, 9 June 2022 NIFS-28-2-161-171.pdf (file) 188 KB Vassia Atanassova (talk | contribs) == Summary == {{upload | description = Issue:On intuitionistic fuzzy semiprime submodules | author = P. K. Sharma | source = Notes on Intuitionistic Fuzzy Sets, Volume 28 (2022), Number 2, pages 161-171 | date = 2022 | license = | other-version = }} Category:PDF files 1
19:42, 9 June 2022 NIFS-28-2-132-148.pdf (file) 162 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Several significant equalities on intuitionistic fuzzy operators | author = Jaydip Bhattacharya | source = Notes on Intuitionistic Fuzzy Sets, Volume 28 (2022), Number 2, pages 132–148 | date = 2022 | license = | other-version = }} Category:PDF Files 1
19:32, 9 June 2022 NIFS-28-2-113-119.pdf (file) 639 KB Vassia Atanassova (talk | contribs) {{upload | description = On modal forms of the two-parametric weak intuitionistic fuzzy implication | author = Piotr Dworniczak | source = Notes on Intuitionistic Fuzzy Sets, Volume 28 (2022), Number 2, pages 93–112 | date = 2022 | license = | other-version = }} Category:PDF files 1
18:45, 9 June 2022 NIFS-28-2-093-112.pdf (file) 247 KB Vassia Atanassova (talk | contribs) {{upload | description = ''Z''<sub>2</sub>-graded intuitionistic ''L''-fuzzy ''q''-deformed quantum subspaces of ''A''<sub>''q''</sub> | author = Marzieh Mostafavi | source = Notes on Intuitionistic Fuzzy Sets, Volume 28 (2022), Number 2, pages 93–112 | date = 2022 | license = | other-version = }} Category:PDF files 1
23:15, 5 April 2022 NIFS-28-1-86-92.pdf (file) 215 KB Vassia Atanassova (talk | contribs) Category:PDF files 1
12:26, 4 April 2022 NIFS-28-1-11-22.pdf (file) 205 KB Vassia Atanassova (talk | contribs)   1
12:05, 4 April 2022 NIFS-28-1-46-50.pdf (file) 730 KB Vassia Atanassova (talk | contribs)   1
11:41, 4 April 2022 NIFS-28-1-23-36.pdf (file) 991 KB Vassia Atanassova (talk | contribs)   1
11:25, 4 April 2022 NIFS-28-1-01-10.pdf (file) 892 KB Vassia Atanassova (talk | contribs)   1
19:55, 3 April 2022 NIFS-28-1-51-85.pdf (file) 966 KB Vassia Atanassova (talk | contribs)   1
19:55, 3 April 2022 NIFS-28-1-37-45.pdf (file) 189 KB Vassia Atanassova (talk | contribs)   1
16:28, 21 March 2022 25-ICIFS-2022-CFP.pdf (file) 87 KB Vassia Atanassova (talk | contribs)   1
21:11, 6 February 2022 Scilit-logo.png (file) 21 KB Vassia Atanassova (talk | contribs) {{upload | description = Logo of the Scilit database | author = | source = https://www.scilit.net/journal/2456957 | date = 2022 | license = | other-version = }} Category:Logos 1
23:31, 9 January 2022 NIFS-27-4-20-29.pdf (file) 154 KB Vassia Atanassova (talk | contribs)   2
21:04, 21 December 2021 NIFS-27-4-78-81.pdf (file) 136 KB Vassia Atanassova (talk | contribs) == Summary == {{upload | description = Note on one inequality and its application in intuitionistic fuzzy sets theory. Part 2 | author = [[Mladen Vassi... 1
15:55, 20 December 2021 NIFS-27-4-71-77.pdf (file) 1.23 MB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Intuitionistic fuzzy evaluation of artificial neural network model | author = Todor Petkov, Veselina Bureva and Stanislav Popov | source = [[Notes on Intuitionistic Fuzzy Sets/27/4|Notes on Intuition... 1
15:55, 20 December 2021 NIFS-27-4-55-70.pdf (file) 248 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Categorical properties of intuitionistic fuzzy groups | author = P. K. Sharma, Chandni | source = Notes on Intuitionistic Fuzzy Sets, Vol 27, No. 4 | date = 2... 1
15:53, 20 December 2021 NIFS-27-4-44-54.pdf (file) 227 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Intuitionistic L-fuzzy essential and closed submodules | author = P. K. Sharma, Kanchan and Gagandeep Kaur | source = [[Notes on Intuitionistic Fuzzy Sets/27/4|Notes on Intuitionistic Fuzzy Sets, Vol... 1
15:52, 20 December 2021 NIFS-27-4-36-43.pdf (file) 189 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Intuitionistic fuzzy quasi-interior ideals of semigroups | author = Sinem Tarsuslu (Yılmaz) and Gökhan Çuvalcıoğlu | source = [[Notes on Intuitionistic Fuzzy Sets/27/4|Notes on Intuitionistic Fuzzy... 1
15:49, 20 December 2021 NIFS-27-4-30-35.pdf (file) 141 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:A new type of intuitionistic fuzzy modal operators over intuitionistic fuzzy pairs | author = Krassimir T. Atanassov | source = [[Notes on Intuitionistic Fuzzy Sets/27/4|Notes on Intuitionistic Fuzzy Sets, V... 1
15:47, 20 December 2021 NIFS-27-4-09-19.pdf (file) 427 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:Operation Δ as the tool for the de-i-fuzzification procedure and for the correction of the unconscientious experts’ evaluations | author = Lilija Atanassova and Piotr Dworniczak | source = [[Notes on In... 1
15:46, 20 December 2021 NIFS-27-4-01-08.pdf (file) 903 KB Vassia Atanassova (talk | contribs) {{upload | description = Issue:The impact of Lotfi Zadeh on my scientific life | author = Etienne E. Kerre | source = Notes on Intuitionistic Fuzzy Sets, Vol 27, No. 4 | date = 2021 | license =... 1
20:40, 13 December 2021 Ari-logo.png (file) 7 KB Vassia Atanassova (talk | contribs)   1
18:26, 25 October 2021 NIFS-27-3-40-50.pdf (file) 167 KB Vassia Atanassova (talk | contribs) == Summary == {{upload |description = Application of intuitionistic fuzzy set to environmental management |author = I. M. Adamu | source = [[Notes on Intuitionistic F... 1
15:10, 25 October 2021 NIFS-27-3-83-97.pdf (file) 306 KB Vassia Atanassova (talk | contribs) == Summary == {{upload | description = Intuitionistic fuzzy transport equation | author = Zineb Belhallaj, Said Melliani, M'hamed Elomari and Lalla Saadia Chadli | source = [[Notes o... 1
15:09, 25 October 2021 NIFS-27-3-69-82.pdf (file) 1,010 KB Vassia Atanassova (talk | contribs) == Summary == {{upload | description = On а study on intuitionistic fuzzy ''r''-normal spaces |author = M. S. Islam, R. Islam and M. S. Hossain | source = [[Notes on Intuiti... 1
15:09, 25 October 2021 NIFS-27-3-51-68.pdf (file) 220 KB Vassia Atanassova (talk | contribs) == Summary == {{upload |description = Norms over intuitionistic fuzzy congruence relations on rings |author = Rasul Rasuli | source = [[Notes on Intuitionistic Fuzzy Sets/2... 1
15:05, 25 October 2021 NIFS-27-3-32-39.pdf (file) 167 KB Vassia Atanassova (talk | contribs) == Summary == {{upload | description = Modifications of Łukasiewicz's intuitionistic fuzzy implication | author = Alžbeta Michalíková, Eulalia Szmidt and [[Peter V... 1
15:04, 25 October 2021 NIFS-27-3-18-31.pdf (file) 179 KB Vassia Atanassova (talk | contribs) == Summary == {{upload |description = Research on intuitionistic fuzzy negations |author = Nora Angelova and Krassimir T. Atanassov | source = [[Notes on Intuitionistic Fuzzy Sets/27/1|N... 1
15:03, 25 October 2021 NIFS-27-3-09-17.pdf (file) 176 KB Vassia Atanassova (talk | contribs) == Summary == {{upload |description = On intuitionistic fuzzy version of Zadeh’s extension principle |author = Selami Bayeǧ and Raziye Mert | source = [[Notes on... 1
15:02, 25 October 2021 NIFS-27-3-01-08.pdf (file) 382 KB Vassia Atanassova (talk | contribs) == Summary == {{upload |description = My meetings with Prof. Lotfi Zadeh |author = Krassimir Atanassov | source = Notes on Intuitionistic Fuzzy Sets, Volume... 1
18:57, 10 September 2021 NIFS-27-2-11-19.pdf (file) 991 KB Vassia Atanassova (talk | contribs) with correct set of references 2
17:16, 10 September 2021 NIFS-21-3-05-17.pdf (file) 537 KB Vassia Atanassova (talk | contribs) correct set of references 2
22:42, 21 August 2021 NIFS-27-2-20-93.pdf (file) 320 KB Velin S. Andonov (talk | contribs)   2
01:41, 21 August 2021 NIFS-27-2-94-102.pdf (file) 204 KB Velin S. Andonov (talk | contribs) {{upload | description = nifs 27-2-94-102 | author = | source = | date = | license = | other-version = }} 1
15:31, 20 August 2021 NIFS-27-1-01-10.pdf (file) 668 KB Velin S. Andonov (talk | contribs)   1
00:18, 26 June 2021 NIFS-27-1-83-100.pdf (file) 301 KB Peter Vassilev (talk | contribs)   2
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