+ <ol>
+ <li>Exploitation of <a href="http://www.w3.org/RDF/">RDF</a> technology
+ to manage metadata and <b>compliance with the main requirements</b> for
+an RDF query language. In particular:</li>
+
+ </ol>
+
+ <blockquote>
+ <ul>
+ <li>MathQL-1 provides facilities for hierarchical constraints
+based on <a href="http://www.w3.org/TR/rdf-schema/">RDF Schema</a> and for
+traversal of compound values of properties.</li>
+
+ </ul>
+
+ <ul>
+ <li>MathQL-1 provides a full set of Boolean operators to compose
+ the query constraints and facilities for selecting URI's or literals by
+means of regular expressions.</li>
+
+ </ul>
+
+ <ul>
+ <li>MathQL-1 allows to customize the query results specifying
+what part of a solution should be preserved or discarded.</li>
+
+ </ul>
+
+ <ul>
+ <li>MathQL-1 has a well-conceived semantics defined in term of
+ an abstract metadata model, imposes that queries return exhaustive solutions
+ and includes a "select-from-where"-like construction.</li>
+
+ </ul>
+
+ <ul>
+ <li>MathQL-1 supports a machine-processable <a
+ href="http://www.w3.org/XML/">XML</a> syntax as well as a human-readable
+ textual syntax to achieve the best usability.<br>
+ </li>
+
+ </ul>
+ </blockquote>
+
+ <ol start="2">
+ <li>Careful <b>treatment of query results</b> that are as important
+ as the queries themselves. In particular:<br>