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	<id>http://www.visual-physics.com/vpwiki/index.php?action=history&amp;feed=atom&amp;title=Theories_as_Vector_Spaces_of_Valid_Statements</id>
	<title>Theories as Vector Spaces of Valid Statements - Revision history</title>
	<link rel="self" type="application/atom+xml" href="http://www.visual-physics.com/vpwiki/index.php?action=history&amp;feed=atom&amp;title=Theories_as_Vector_Spaces_of_Valid_Statements"/>
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	<updated>2026-09-27T02:02:48Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>http://www.visual-physics.com/vpwiki/index.php?title=Theories_as_Vector_Spaces_of_Valid_Statements&amp;diff=576&amp;oldid=prev</id>
		<title>George Barouxis: 6 revisions imported</title>
		<link rel="alternate" type="text/html" href="http://www.visual-physics.com/vpwiki/index.php?title=Theories_as_Vector_Spaces_of_Valid_Statements&amp;diff=576&amp;oldid=prev"/>
		<updated>2021-10-29T20:24:54Z</updated>

		<summary type="html">&lt;p&gt;6 revisions imported&lt;/p&gt;
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				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 20:24, 29 October 2021&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-notice&quot; lang=&quot;en&quot;&gt;&lt;div class=&quot;mw-diff-empty&quot;&gt;(No difference)&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</summary>
		<author><name>George Barouxis</name></author>
	</entry>
	<entry>
		<id>http://www.visual-physics.com/vpwiki/index.php?title=Theories_as_Vector_Spaces_of_Valid_Statements&amp;diff=575&amp;oldid=prev</id>
		<title>George Barouxis: 5 revisions imported</title>
		<link rel="alternate" type="text/html" href="http://www.visual-physics.com/vpwiki/index.php?title=Theories_as_Vector_Spaces_of_Valid_Statements&amp;diff=575&amp;oldid=prev"/>
		<updated>2015-10-11T21:23:45Z</updated>

		<summary type="html">&lt;p&gt;5 revisions imported&lt;/p&gt;
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				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 21:23, 11 October 2015&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-notice&quot; lang=&quot;en&quot;&gt;&lt;div class=&quot;mw-diff-empty&quot;&gt;(No difference)&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</summary>
		<author><name>George Barouxis</name></author>
	</entry>
	<entry>
		<id>http://www.visual-physics.com/vpwiki/index.php?title=Theories_as_Vector_Spaces_of_Valid_Statements&amp;diff=574&amp;oldid=prev</id>
		<title>George Barouxis at 15:47, 11 November 2007</title>
		<link rel="alternate" type="text/html" href="http://www.visual-physics.com/vpwiki/index.php?title=Theories_as_Vector_Spaces_of_Valid_Statements&amp;diff=574&amp;oldid=prev"/>
		<updated>2007-11-11T15:47:10Z</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;Revision as of 15:47, 11 November 2007&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-l14&quot;&gt;Line 14:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 14:&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;[[Category:Metatheoretical Considerations]]&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;[[Category:Metatheoretical Considerations]]&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;[[Category:Related]]&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;[[Category:Related]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&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;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Category:Stubs]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>George Barouxis</name></author>
	</entry>
	<entry>
		<id>http://www.visual-physics.com/vpwiki/index.php?title=Theories_as_Vector_Spaces_of_Valid_Statements&amp;diff=573&amp;oldid=prev</id>
		<title>George Barouxis at 20:59, 14 January 2007</title>
		<link rel="alternate" type="text/html" href="http://www.visual-physics.com/vpwiki/index.php?title=Theories_as_Vector_Spaces_of_Valid_Statements&amp;diff=573&amp;oldid=prev"/>
		<updated>2007-01-14T20:59:46Z</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 20:59, 14 January 2007&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-l8&quot;&gt;Line 8:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 8:&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;&amp;lt;/table&amp;gt;&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;&amp;lt;/table&amp;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;br&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;br&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;Consider the set of all symbols used in a theory. Take the subset of well-formed combinations of these symbols, or theorems. Take a space whose points represent these &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;theorem&lt;/del&gt;, theorem space. Usually there is a category of symbols such as =, `=&amp;gt;` and `&amp;lt;=&amp;gt;` that act as &quot;vectors&quot;, in the sense that they allow as to move from one point of the theorem space to another. Axioms act as starting points or points of entry to the theorem space. From these, we contruct more complex vectors (for instance, `(a+b)^2=a^2+b^2+2ab`), and so on). Using these, we expand the area of &quot;true&quot; theorems within the theorem space, that is, the theorems to which we can arrive to starting from the axiom entry points and using the vectors that the rules of the theory allow us.&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;Consider the set of all symbols used in a theory. Take the subset of well-formed combinations of these symbols, or theorems. Take a space whose points represent these &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;theorems&lt;/ins&gt;, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;the &lt;/ins&gt;theorem space. Usually there is a category of symbols such as =, `=&amp;gt;` and `&amp;lt;=&amp;gt;` that act as &quot;vectors&quot;, in the sense that they allow as to move from one point of the theorem space to another. Axioms act as starting points or points of entry to the theorem space. From these, we contruct more complex vectors (for instance, `(a+b)^2=a^2+b^2+2ab`), and so on). Using these, we expand the area of &quot;true&quot; theorems within the theorem space, that is, the theorems to which we can arrive to starting from the axiom entry points and using the vectors that the rules of the theory allow us.&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;br&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;br&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;br&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;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>George Barouxis</name></author>
	</entry>
	<entry>
		<id>http://www.visual-physics.com/vpwiki/index.php?title=Theories_as_Vector_Spaces_of_Valid_Statements&amp;diff=572&amp;oldid=prev</id>
		<title>George Barouxis at 20:47, 12 January 2007</title>
		<link rel="alternate" type="text/html" href="http://www.visual-physics.com/vpwiki/index.php?title=Theories_as_Vector_Spaces_of_Valid_Statements&amp;diff=572&amp;oldid=prev"/>
		<updated>2007-01-12T20:47:33Z</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 20:47, 12 January 2007&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-l13&quot;&gt;Line 13:&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;br&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;br&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;[[Category:Metatheoretical Considerations]]&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;[[Category:Metatheoretical Considerations]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&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;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Category:Related]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>George Barouxis</name></author>
	</entry>
	<entry>
		<id>http://www.visual-physics.com/vpwiki/index.php?title=Theories_as_Vector_Spaces_of_Valid_Statements&amp;diff=571&amp;oldid=prev</id>
		<title>George Barouxis: 1 revision(s)</title>
		<link rel="alternate" type="text/html" href="http://www.visual-physics.com/vpwiki/index.php?title=Theories_as_Vector_Spaces_of_Valid_Statements&amp;diff=571&amp;oldid=prev"/>
		<updated>2006-12-31T14:36:14Z</updated>

		<summary type="html">&lt;p&gt;1 revision(s)&lt;/p&gt;
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				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 14:36, 31 December 2006&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-notice&quot; lang=&quot;en&quot;&gt;&lt;div class=&quot;mw-diff-empty&quot;&gt;(No difference)&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</summary>
		<author><name>George Barouxis</name></author>
	</entry>
	<entry>
		<id>http://www.visual-physics.com/vpwiki/index.php?title=Theories_as_Vector_Spaces_of_Valid_Statements&amp;diff=570&amp;oldid=prev</id>
		<title>George Barouxis at 15:54, 23 December 2006</title>
		<link rel="alternate" type="text/html" href="http://www.visual-physics.com/vpwiki/index.php?title=Theories_as_Vector_Spaces_of_Valid_Statements&amp;diff=570&amp;oldid=prev"/>
		<updated>2006-12-23T15:54:16Z</updated>

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Consider the set of all symbols used in a theory. Take the subset of well-formed combinations of these symbols, or theorems. Take a space whose points represent these theorem, theorem space. Usually there is a category of symbols such as =, `=&amp;gt;` and `&amp;lt;=&amp;gt;` that act as &amp;quot;vectors&amp;quot;, in the sense that they allow as to move from one point of the theorem space to another. Axioms act as starting points or points of entry to the theorem space. From these, we contruct more complex vectors (for instance, `(a+b)^2=a^2+b^2+2ab`), and so on). Using these, we expand the area of &amp;quot;true&amp;quot; theorems within the theorem space, that is, the theorems to which we can arrive to starting from the axiom entry points and using the vectors that the rules of the theory allow us.&lt;br /&gt;
&lt;br /&gt;
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[[Category:Metatheoretical Considerations]]&lt;/div&gt;</summary>
		<author><name>George Barouxis</name></author>
	</entry>
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