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1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
2 <html>
3 <head>
4   <title>MathQL</title>
5                                                                         
6                                       
7   <meta http-equiv="content-type"
8  content="text/html; charset=ISO-8859-1">
9                                                                
10   <meta name="author" content="Ferruccio Guidi">
11                                                                
12   <meta name="description" content="MathQL Home Page">
13 </head>
14   <body>
15                               
16 <h1 align="center">MathQL-1</h1>
17                            
18 <h2 align="center">A query language for RDF metadata</h2>
19                                
20 <table cellpadding="10" cellspacing="2" border="0" width="95%"
21  bgcolor="#ffffff">
22                   <tbody>
23                     <tr>
24                       <td valign="top" align="left">                    
25                                                                         
26                   
27       <ul>
28                         <li>Forward<br>
29                      </li>
30                                                                         
31                                                       
32       </ul>
33                                                                         
34                                       
35       <ul>
36                       <li><a href="features.html">Features</a></li>
37                                                                         
38                                       
39       </ul>
40                                                                         
41                                       
42       <ul>
43                       <li><a href="whatsnew.html">What's new</a></li>
44                        
45       </ul>
46                        
47       <ul>
48            <li><a href="documentation.html">Documentation</a></li>
49                                                                         
50                                                       
51       </ul>
52                                                                         
53                               
54       <ul>
55                      <li><a href="implementation.html">Implementation</a><br>
56                      </li>
57                                                                         
58                               
59       </ul>
60                                                                         
61                               
62       <ul>
63                      <li><a href="authors.html">The authors</a><br>
64                      </li>
65                                                                         
66                                                       
67       </ul>
68                                                                         
69                               
70       <ul>
71                      <li><a href="links.html">Links</a><br>
72                      </li>
73                                                                         
74                               
75       </ul>
76                    <br>
77                       </td>
78                       <td valign="top">                                 
79                                                          
80       <div align="right"><b>Forward</b><br>
81                    </div>
82                    <br>
83              The MathQL proposal rises in the context of the <a
84  href="http://helm.cs.unibo.it/">HELM  project</a>, which  aims   at the development
85 of a suitable technology for the  creation and maintenance   of a virtual,
86 distributed, hypertextual library  of structured mathematical    knowledge
87 based on <a href="http://www.w3.org/XML/">XML</a> technology, through the
88  integration of the current   proof assistants and logical frameworks with
89 the  most recent technologies   for the development of Web applications and
90 electronic  publishing.<br>
91                      <br>
92              The objective of the MathQL proposal is the development of a 
93 set   of  query   languages enabling the retrieval of formalized mathematical 
94 Web  resources    on the basis of content-aware requests. The first of these
95   languages,        <b>MathQL-1</b>,    is focused on querying an arbitrary
96         <a href="http://www.w3.org/RDF/">RDF</a> database because RDF is
97 the         <a href="http://www.w3.org/">W3C</a>  standard  for describing
98 Web   resources  at the general-purpose content level.<br>
99                    <br>
100              As an RDF query language, MathQL-1 provides the main features
101  required      by the RDF community while complying with the needs of HELM.
102  The peculiar      aspects of this language concern the query results, which
103  are highly structured     and possess their own syntax, formally explained
104  by a rigorous semantics.<br>
105                     <br>
106               MathQL-1 is particularly helpful in distributed systems where 
107  query    engines   are implemented as stand-alone units, because in this 
108 situation    the query   results are exchanged between the system components 
109 as well  as  the queries, and thus both the queries and the query results 
110 need to be encoded in a clearly defined format.<br>
111             <br>
112       Other languages to be developed in the context of the MathQL proposal 
113  will  be suitable for queries about the semantic structure of mathematical 
114  data:  this will include content-based pattern-matching (MathQL-2) and possibly
115   other forms of formal matching involving for instance isomorphism, unification
116   and definitions expansion (MathQL-3).<br>
117                       </td>
118                     </tr>
119                                                                
120   </tbody>                
121 </table>
122                  <br>
123          <br>
124                  
125 <div align="center">This site is maintained by <a
126  href="mailto://fguidi@cs.unibo.it">Ferruccio Guidi</a>, last update: July
127 30, 2003.<br>
128       <br>
129       </div>
130       <br>
131      <br>
132     <br>
133    <br>
134   <br>
135  <br>
136 </body>
137 </html>