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-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
-<html>
-<head>
-  <title>MathQL</title>
-                                                                        
-                               
-  <meta http-equiv="content-type"
- content="text/html; charset=ISO-8859-1">
-                                                           
-  <meta name="author" content="Ferruccio Guidi">
-                                                           
-  <meta name="description" content="MathQL Home Page">
-</head>
-  <body>
-                            
-<h1 align="center">MathQL-1</h1>
-                         
-<h2 align="center">A query language for RDF metadata</h2>
-                             
-<table cellpadding="10" cellspacing="2" border="0" width="95%"
- bgcolor="#ffffff">
-                 <tbody>
-                   <tr>
-                     <td valign="top" align="left">                     
-                                                                        
-          
-      <ul>
-                       <li>Forward<br>
-                    </li>
-                                                                        
-                                              
-      </ul>
-                                                                        
-                              
-      <ul>
-                     <li><a href="features.html">Features</a></li>
-                                                                        
-                              
-      </ul>
-                                                                        
-                              
-      <ul>
-                     <li><a href="whatsnew.html">What's new</a></li>
-               
-      </ul>
-               
-      <ul>
-          <li><a href="documentation.html">Documentation</a></li>
-                                                                        
-                                              
-      </ul>
-                                                                        
-                      
-      <ul>
-                    <li><a href="implementation.html">Implementation</a><br>
-                    </li>
-                                                                        
-                      
-      </ul>
-                                                                        
-                      
-      <ul>
-                    <li><a href="authors.html">The authors</a><br>
-                    </li>
-                                                                        
-                                              
-      </ul>
-                                                                        
-                      
-      <ul>
-                    <li><a href="links.html">Links</a><br>
-                    </li>
-                                                                        
-                      
-      </ul>
-                  <br>
-                     </td>
-                     <td valign="top">                                  
-                                                 
-      <div align="right"><b>Forward</b><br>
-                  </div>
-                  <br>
-            The MathQL proposal rises in the context of the <a
- href="http://helm.cs.unibo.it/">HELM  project</a>, which  aims   at the
-development of a suitable technology for the  creation and maintenance  
-of a virtual, distributed, hypertextual library  of structured mathematical
-   knowledge based on <a href="http://www.w3.org/XML/">XML</a> technology,
-through the  integration of the current   proof assistants and logical frameworks
-with the  most recent technologies   for the development of Web applications
-and electronic  publishing.<br>
-                    <br>
-            The objective of the MathQL proposal is the development of a
-set   of  query   languages enabling the retrieval of formalized mathematical
-Web  resources    on the basis of content-aware requests. The first of these 
- languages,        <b>MathQL-1</b>,    is focused on querying an arbitrary 
-       <a href="http://www.w3.org/RDF/">RDF</a> database because RDF is the 
-       <a href="http://www.w3.org/">W3C</a>  standartd  for describing Web 
- resources  at the general-purpose content level.<br>
-                  <br>
-            As an RDF query language, MathQL-1 provides the main features 
-required      by the RDF community while complying with the needs of HELM. 
-The peculiar      aspects of this language concern the query results, which 
-are highly structured     and possess their own syntax, formally explained 
-by a rigorous semantics.<br>
-                   <br>
-             MathQL-1 is particularly helpful in distributed systems where
- query    engines   are implemented as stand-alone units, because in this
-situation    the query   results are exchanged between the system components
-as well  as  the queries, and thus both the queries and the query results
-need to be encoded in a clearly defined format.<br>
-           <br>
-     Other languages to be developed in the context of the MathQL proposal
- will  be suitable for queries about the semantic structure of mathematical
- data:  this will include content-based pattern-matching (MathQL-2) and possibly 
- other forms of formal matching involving for instance isomorphism, unification 
- and definitions expansion (MathQL-3).<br>
-                     </td>
-                   </tr>
-                                                           
-  </tbody>               
-</table>
-                <br>
-        <br>
-               
-<div align="center">This site is maintained by <a
- href="mailto://fguidi@cs.unibo.it">Ferruccio Guidi</a>, last update: July
-10, 2003.<br>
-     <br>
-     </div>
-     <br>
-    <br>
-   <br>
-  <br>
- <br>
-</body>
-</html>