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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 set 
93  of  query   languages enabling the retrieval of formalized mathematical Web
94  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 the
97        <a href="http://www.w3.org/">W3C</a>  standartd  for describing Web
98  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 situation
108    the query   results are exchanged between the system components as well
109  as  the queries, and thus both the queries and the query results need to
110 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:   May
127  27, 2003.<br>
128     <br>
129     </div>
130     <br>
131    <br>
132   <br>
133  <br>
134 </body>
135 </html>