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	<id>https://ifigenia.org/index.php?action=history&amp;feed=atom&amp;title=Issue%3AInterval_valued_intuitionistic_fuzzy_sets</id>
	<title>Issue:Interval valued intuitionistic fuzzy sets - Revision history</title>
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	<updated>2026-04-25T13:25:31Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://ifigenia.org/index.php?title=Issue:Interval_valued_intuitionistic_fuzzy_sets&amp;diff=6343&amp;oldid=prev</id>
		<title>Vassia Atanassova at 18:46, 16 December 2012</title>
		<link rel="alternate" type="text/html" href="https://ifigenia.org/index.php?title=Issue:Interval_valued_intuitionistic_fuzzy_sets&amp;diff=6343&amp;oldid=prev"/>
		<updated>2012-12-16T18:46:03Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 21:46, 16 December 2012&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l22&quot;&gt;Line 22:&lt;/td&gt;
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&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{issue/data&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{issue/data&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  | conference      =  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  | conference      =  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  | issue           = [[Fuzzy Sets and Systems]], &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;20 &lt;/del&gt;(&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;1986&lt;/del&gt;) pp &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;87—96&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  | issue           = [[Fuzzy Sets and Systems]], &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;31 &lt;/ins&gt;(&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;1989&lt;/ins&gt;) pp &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;343—349&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  | file            = FSS-1989-31-3-343-349.pdf&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  | file            = FSS-1989-31-3-343-349.pdf&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
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&lt;/table&gt;</summary>
		<author><name>Vassia Atanassova</name></author>
	</entry>
	<entry>
		<id>https://ifigenia.org/index.php?title=Issue:Interval_valued_intuitionistic_fuzzy_sets&amp;diff=3731&amp;oldid=prev</id>
		<title>Vassia Atanassova: New page: Category:Publications on intuitionistic fuzzy sets Category:Publications in Fuzzy Sets and Systems Category:Publications in 1989 year {{issue/title  | title           = Interva...</title>
		<link rel="alternate" type="text/html" href="https://ifigenia.org/index.php?title=Issue:Interval_valued_intuitionistic_fuzzy_sets&amp;diff=3731&amp;oldid=prev"/>
		<updated>2009-09-06T12:01:13Z</updated>

		<summary type="html">&lt;p&gt;New page: &lt;a href=&quot;/wiki/Category:Publications_on_intuitionistic_fuzzy_sets&quot; title=&quot;Category:Publications on intuitionistic fuzzy sets&quot;&gt;Category:Publications on intuitionistic fuzzy sets&lt;/a&gt; &lt;a href=&quot;/wiki/Category:Publications_in_Fuzzy_Sets_and_Systems&quot; title=&quot;Category:Publications in Fuzzy Sets and Systems&quot;&gt;Category:Publications in Fuzzy Sets and Systems&lt;/a&gt; &lt;a href=&quot;/wiki/Category:Publications_in_1989_year&quot; title=&quot;Category:Publications in 1989 year&quot;&gt;Category:Publications in 1989 year&lt;/a&gt; {{issue/title  | title           = Interva...&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;[[Category:Publications on intuitionistic fuzzy sets]]&lt;br /&gt;
[[Category:Publications in Fuzzy Sets and Systems]]&lt;br /&gt;
[[Category:Publications in 1989 year]]&lt;br /&gt;
{{issue/title&lt;br /&gt;
 | title           = Interval valued intuitionistic fuzzy sets&lt;br /&gt;
 | shortcut        = fss-31-343-349&lt;br /&gt;
}}&lt;br /&gt;
{{issue/author&lt;br /&gt;
 | author          = Krassimir Atanassov&lt;br /&gt;
 | institution     = CLANP-BAN&lt;br /&gt;
 | address         = 72 Lenin Boul., 1784 Sofia, Bulgaria &lt;br /&gt;
 | email-before-at = &lt;br /&gt;
 | email-after-at  = &lt;br /&gt;
 | cur-email-before-at = krat&lt;br /&gt;
 | cur-email-after-at  = bas.bg&lt;br /&gt;
}}&lt;br /&gt;
{{issue/author&lt;br /&gt;
 | author          = George Gargov&lt;br /&gt;
 | institution     = LML, CICT-PAS, Sofia, Bulgaria&lt;br /&gt;
 | address         = &lt;br /&gt;
}}&lt;br /&gt;
{{issue/data&lt;br /&gt;
 | conference      = &lt;br /&gt;
 | issue           = [[Fuzzy Sets and Systems]], 20 (1986) pp 87—96&lt;br /&gt;
 | file            = FSS-1989-31-3-343-349.pdf&lt;br /&gt;
 | format          = PDF&lt;br /&gt;
 | size            = 660&lt;br /&gt;
 | abstract        = &lt;br /&gt;
A generalization of the notion intuitionistic fuzzy set is given in the spirit of ordinary [[interval valued fuzzy sets]]. The new notion is called [[Interval valued intuitionistic fuzzy sets]] (IVIFS). Here we present the basic preliminaries of IVIFS theory.&lt;br /&gt;
 | keywords        = [[Fuzzy set]], Interval valued fuzzy set, Interval valued intuitionistic fuzzy set, [[Intuitionistic fuzzy set]], Modal operator&lt;br /&gt;
 | references      = &lt;br /&gt;
# K. Atanassov, [[Issue:Intuitionistic fuzzy sets|Intuitionistic fuzzy sets]], Fuzzy sets and systems 20 (1986) 87-96&lt;br /&gt;
# M. Gorzalczany, A method of inference in approximate reasoning based on interval-valued fuzzy sets, Fuzzy sets and systems 21 (1987) 1-17&lt;br /&gt;
 | citations       = &lt;br /&gt;
 | see-also        = &lt;br /&gt;
}}&lt;/div&gt;</summary>
		<author><name>Vassia Atanassova</name></author>
	</entry>
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