+++ /dev/null
-<?xml encoding="ISO-8859-1"?>
-
-<!-- Copyright (C) 2000, HELM Team -->
-<!-- -->
-<!-- This file is part of HELM, an Hypertextual, Electronic -->
-<!-- Library of Mathematics, developed at the Computer Science -->
-<!-- Department, University of Bologna, Italy. -->
-<!-- -->
-<!-- HELM is free software; you can redistribute it and/or -->
-<!-- modify it under the terms of the GNU General Public License -->
-<!-- as published by the Free Software Foundation; either version 2 -->
-<!-- of the License, or (at your option) any later version. -->
-<!-- -->
-<!-- HELM is distributed in the hope that it will be useful, -->
-<!-- but WITHOUT ANY WARRANTY; without even the implied warranty of -->
-<!-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -->
-<!-- GNU General Public License for more details. -->
-<!-- -->
-<!-- You should have received a copy of the GNU General Public License -->
-<!-- along with HELM; if not, write to the Free Software -->
-<!-- Foundation, Inc., 59 Temple Place - Suite 330, Boston, -->
-<!-- MA 02111-1307, USA. -->
-<!-- -->
-<!-- For details, see the HELM World-Wide-Web page, -->
-<!-- http://cs.unibo.it/helm/. -->
-
-<!--*****************************************************************-->
-<!-- DTD FOR THEORY OBJECTS AT LEVEL OF MATHML CONTENT: -->
-<!-- First draft: May 9 2000, Irene Schena -->
-<!-- Second draft: March 15 2001, Irene Schena -->
-<!-- Third draft: May 3 2001, Irene Schena -->
-<!--*****************************************************************-->
-
-<!ENTITY % cicobj SYSTEM "cicobject.dtd">
-
-%cicobj;
-
-<!ENTITY % theorystructure
- '(ht:AXIOM|ht:DEFINITION|ht:THEOREM|ht:VARIABLE|ht:SECTION|ht:MUTUAL)*'>
-
-<!ELEMENT ht:SECTION (%theorystructure;)>
-<!ATTLIST ht:SECTION
- uri CDATA #REQUIRED>
-
-<!ELEMENT ht:MUTUAL (ht:DEFINITION,ht:DEFINITION+)>
-
-<!-- Theory Items -->
-
-<!ELEMENT ht:AXIOM (Axiom)>
-<!ATTLIST ht:AXIOM
- uri CDATA #REQUIRED
- as (Axiom|Declaration) #REQUIRED>
-
-<!ELEMENT ht:DEFINITION (Definition|InductiveDefinition)>
-<!ATTLIST ht:DEFINITION
- uri CDATA #REQUIRED
- as (Definition|InteractiveDefinition|Inductive|CoInductive
- |Record) #REQUIRED>
-
-<!ELEMENT ht:THEOREM (type)>
-<!ATTLIST ht:THEOREM
- uri CDATA #REQUIRED
- as (Theorem|Lemma|Corollary|Fact|Remark) #REQUIRED>
-
-<!ELEMENT ht:VARIABLE (Variable)>
-<!ATTLIST ht:VARIABLE
- uri CDATA #REQUIRED
- as (Assumption|Hypothesis|LocalDefinition|LocalFact) #REQUIRED>