Difference between pages "Theory Plug-in" and "Template:Dev News"

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Return to [[Rodin Plug-ins]]
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[http://wiki.event-b.org/index.php?title=Template:Dev_News/Archives&action=edit Edit Archives]
See also [[Theory Release History]]
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== Displayed as follow on the Main Page ==
 
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<div style="margin:0;width:50%;border:1px solid #AAAAAA;background:#FFFFFF;">
The Theory plug-in provides capabilities to extend the Event-B language and the proving infrastructure in a familiar fashion to Rodin users. This page provides useful information about the plug-in and its capabilities.
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</noinclude><!--- News to add here below : ==== --->
 
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<div style="font-size:90%;">
===Motivation===
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{| border="0"
Up to Rodin v2.0, the mathematical language used in Event-B has been fixed. As such, it was not possible to define reusable polymorphic operators. A workaround was to define any required operators as set constructs in contexts. Originally, contexts were supposed to provide a parametrization of machines. The aforementioned limitations of the Event-B language lead to users to use contexts for purposes for which they were not intentionally devised. Examples of operators that can be useful to users include the sequence operator (which was present in classical B mathematical language) and the bag operator.
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|<p style="font-size:35px">Rodin 3.6 is out&nbsp;&nbsp;&nbsp;</p>
In Rodin v2.0, support for customised syntactic symbols was introduced. The Theory plug-in, as a result, evolved from being just a component to define rewrite rules to a versatile platform to define and validate proof and language extensions.
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||<p style="font-size:25px">[[Rodin Platform 3.7 Release Notes | +Learn more... ]]</p>
 
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  <p style="font-size:25px">[http://sourceforge.net/projects/rodin-b-sharp/files/Core_Rodin_Platform/3.7/ Download now]</p>
The latest Theory plug-in is released for Rodin v2.8.
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===Overview===
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* 25/04/22 : [http://sourceforge.net/projects/rodin-b-sharp/files/Core_Rodin_Platform/3.7/ Release 3.7] of Rodin is now available [[Rodin Platform 3.7 Release Notes | +Learn more]]
The Theory plug-in is a Rodin extension that provides the facility to define '''''mathematical extensions''''' as well as '''''prover extensions'''''.
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* 01/04/22 : [[Theory_Plug-in]] Theory 4.0.4 is now available
Mathematical extensions are new operator definitions and new datatype definitions and axiomatic definitions. Operator definitions can be expression operators (e.g., ''card'') and predicate operators (e.g., ''finite''). Datatypes extensions can be used to define enumerated datatypes (e.g., ''DIRECTION'') as well as inductive datatypes (e.g., ''Tree''). Axiomatic definitions can be used to define new data types like "REAL".
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* 14/01/22 : [[SMT_Solvers_Plug-in]] SMT Solvers 1.5 is now available
 
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* 29/09/21 : [[Theory_Plug-in]] Theory 4.0.3 is now available
The placeholder for mathematical and prover extensions is a Theory construct which looks similar to contexts and machines. A theory can include datatypes definitions, operator definitions, axiomatic definitions, inference and rewrite rules as well as polymorphic theorems. The [http://wiki.event-b.org/images/Theory_Plugin.pdf user manual] provides a guide to developing and using theories.
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* 04/06/21 : [[Theory_Plug-in]] Theory 4.0.2 is now available
 
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* 17/05/21 : [http://sourceforge.net/projects/rodin-b-sharp/files/Core_Rodin_Platform/3.6/ Release 3.6] of Rodin is now available [[Rodin Platform 3.6 Release Notes | +Learn more]]
=== Installation & Update ===
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* 22/12/20 : [[Theory_Plug-in]] Theory 4.0.1 is now available
 
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* 11/09/20 : [http://sourceforge.net/projects/rodin-b-sharp/files/Core_Rodin_Platform/3.5/ Release 3.5] of Rodin is now available [[Rodin Platform 3.5 Release Notes | +Learn more]]
The installation or update for the Theory plug-in is available under the main Rodin Update site (http://rodin-b-sharp.sourceforge.net/updates) under the category "Modelling Extensions". Like always, after the installation, restarting Rodin is recommended.
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* 07/03/18 : [http://sourceforge.net/projects/rodin-b-sharp/files/Core_Rodin_Platform/3.4/ Release 3.4] of Rodin is now available [[Rodin Platform 3.4 Release Notes | +Learn more]]
 
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* 13/04/17 : [http://sourceforge.net/projects/rodin-b-sharp/files/Core_Rodin_Platform/3.3/ Release 3.3] of Rodin is now available [[Rodin Platform 3.3 Release Notes | +Learn more]]
===User Manual===
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* 22/06/15 : [http://sourceforge.net/projects/rodin-b-sharp/files/Core_Rodin_Platform/3.2/ Release 3.2] of Rodin is now available [[Rodin Platform 3.2 Release Notes | +Learn more]]
The user manual is available here: [http://wiki.event-b.org/images/Theory_Plugin.pdf Theory User Manual]. Below is the presentation of the sequence theory which its description can be found in the user manual:
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* 17/12/14 : [http://sourceforge.net/projects/rodin-b-sharp/files/Core_Rodin_Platform/3.1/ Release 3.1] of Rodin is now available [[Rodin Platform 3.1 Release Notes | +Learn more]]
 
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* 25/03/14 : [http://sourceforge.net/projects/rodin-b-sharp/files/Core_Rodin_Platform/3.0/ Release 3.0] of Rodin is now available [[Rodin_Platform_3.0_Release_Notes | +Learn more]]
[[image:SeqTheory.png|center|thumb|1500px|'''Theory of Sequence''']]
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* 18/10/13 : [[SMT_Solvers_Plug-in]] SMT 1.1 is now available
 
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* 20/06/13 : [https://sourceforge.net/projects/rodin-b-sharp/files/Core_Rodin_Platform/2.8/ Release 2.8] of Rodin is now available [[Rodin_Platform_2.8_Release_Notes | +Learn more]]
===Standard Library===
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* 03/06/13 : [[SMT_Solvers_Plug-in]] SMT 1.0 is now available
In this section, you find a set of standard theories and some models using some of these theories.  
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* 06/11/12 : [http://sourceforge.net/projects/rodin-b-sharp/files/Core_Rodin_Platform/2.7/ Release 2.7] of Rodin is now available
 
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* 03/08/12 : [http://sourceforge.net/projects/rodin-b-sharp/files/Core_Rodin_Platform/2.6/ Release 2.6] of Rodin is now available
The standard library of the theories is available to download:
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* 02/05/12 : [http://sourceforge.net/projects/rodin-b-sharp/files/Core_Rodin_Platform/2.5/ Release 2.5] of Rodin is now available
[https://sourceforge.net/projects/rodin-b-sharp/files/Theory_StdLib/StandardTheory0.1.zip/download here] for Rodin2.8 and
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* 03/02/12 : [http://sourceforge.net/projects/rodin-b-sharp/files/Core_Rodin_Platform/2.4/ Release 2.4] of Rodin is now available
[https://sourceforge.net/projects/rodin-b-sharp/files/Theory_StdLib/StandardTheory0.2.zip/download here] for Rodin3.1.
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* 01/12/11 : [[Rodin_Editor | Rodin Editor]] plug-in v0.6 released for Rodin 2.3
This library includes:
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* 04/10/11 : [http://sourceforge.net/projects/rodin-b-sharp/files/Core_Rodin_Platform/2.3/ Release 2.3] of Rodin is now available
* BasicTheory project: including theories of BinaryTree, BoolOps, List, PEANO, SUMandPRODUCT and Seq.
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* 01/08/11 : [http://sourceforge.net/projects/rodin-b-sharp/files/Core_Rodin_Platform/2.2.2/ Release 2.2.2] of Rodin is now available
* RelationOrderTheory project: including theories of Connectivity, FixPoint, Relation, Well_Fondation, closure, complement and galois.
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* 13/07/11 : [[Rodin_Editor | Rodin Editor]] plug-in released for Rodin 2.2.x
* RealTheory project: including theory of Real.
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* 01/06/11 : [http://sourceforge.net/projects/rodin-b-sharp/files/Core_Rodin_Platform/2.2/ Release 2.2] of Rodin is now available
 
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<!--
Also it includes three simple Event-B models that use some of the theories:
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* 08/02/11 : [http://sourceforge.net/projects/rodin-b-sharp/files/Core_Rodin_Platform/2.1/ Release 2.1] of Rodin is now available
* Data project: using SUMandPRODUCT theory
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* 16/11/10 : [http://sourceforge.net/projects/rodin-b-sharp/files/Core_Rodin_Platform/2.0.1/ Release 2.0.1] of Rodin is now available
* Queue project: using Seq theory
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* 13/10/10 : [http://sourceforge.net/projects/rodin-b-sharp/files/Core_Rodin_Platform/2.0/ Release 2.0] of Rodin is now available
* SimpleNetwork project: using closure theory
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* 08/06/10 : UML-B Statemachine Animation Version 1.0.0 released (for Rodin 1.3)
 
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* 08/06/10 : UML-B Version 1.1.0 released (for Rodin 1.3)
In order to keep the POs discharged, you need to install "Atelier B provers" as well.
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* 03/02/10 : [http://sourceforge.net/projects/rodin-b-sharp/files/Core_Rodin_Platform/1.2/ Release 1.2.0] of Rodin is now available
 
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* 29/11/09 : B2Latex 0.5.1 is now available for Rodin 0.9.2 or later
===Capabilities===
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* 20/10/09 : [http://sourceforge.net/projects/rodin-b-sharp/files/Core_Rodin_Platform/1.1/ Release 1.1.0] of Rodin is now available
The Theory plug-in has the following capabilities:
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* 25/08/09 : [http://cia.vc/stats/project/rodin-b-sharp/.message/248437 Implemented new Prover Rules]
 
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* 20/08/09 : [http://cia.vc/stats/project/rodin-b-sharp/.message/24160f New extensible plug-ins] org.rodinp.keyboard and org.eventb.keyboard
* Theory Definition:
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* 31/07/09 : UML-B plug-in released for Rodin 1.0.0
** Definition of datatypes: datatypes are defined by supplying the types on which they are polymorphic, a set of constructors one of which has to be a base constructor. Each constructor may or may not have destructors.
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* 27/07/09 : Fixed requirement plug-in for rodin 1.0.0
** Definition of operators: operators can be defined as predicate or expression operators. An expression operator is an operator that "returns" an expression, an example existing operator is ''card''. A predicate operator is one that "returns" a predicate, an example existing predicate operator is ''finite''.
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* 01/07/09 : [https://sourceforge.net/projects/rodin-b-sharp/files/Core_Rodin_Platform/1.0/ Release 1.0.0] of Rodin is now available ([http://sourceforge.net/project/shownotes.php?release_id=693928 changelog]-->
** Definition of axiomatic definitions: axiomatic definitions are defined by supplying the types, a set of operators, and a set of axioms.
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** Definition of rewrite rules: rewrite rules are one-directional equalities that can be applied from left to right. The Theory plug-in can be used to define rewrite rules.
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** Definition of inference rules: inference rules can be used to infer new hypotheses, split a goal into sub-goals or discharge sequents.
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** Definition of polymorphic theorems: theorems can be defined and validated once, and can then be imported into sequents of proof obligations if a suitable type instantiation is available.
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[[Category:Main page templates]]
** Validation of extensions: where appropriate, proof obligations are generated to ensure soundness of extensions. This includes, proof obligations for validity of inference and rewrite rules, as well as proof obligations to validate operator properties such as associativity and commutativity.
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</noinclude>
*Theory Deployment: this step signifies that a theory is ready for use. Theories can be deployed after they have been optionally validated by the user. It is strongly advisable to discharge all proof obligations before deployment.
 
Once a theory has been deployed to its designated project, all its extensions (mathematical and prover extensions) can be used in models.
 
 
 
===Insider Look===
 
The Theory plug-in partially satisfies the requirements outlined in the following document:
 
* [http://deploy-eprints.ecs.soton.ac.uk/80/ Abrial, Jean-Raymond and Butler, Michael and Schmalz, Matthias and Hallerstede, Stefan and Voisin, Laurent. Mathematical Extensions Proposal]
 
 
 
A more accurate description of the implemented functionalities of the plug-in can be found in the following document:
 
* [http://deploy-eprints.ecs.soton.ac.uk/251/ Michael Butler, Issam Maamria. Mathematical Extensions Summary]
 
 
 
The following two papers describe rewriting and well-definedness issues that has to be accounted for:
 
 
 
* [http://eprints.ecs.soton.ac.uk/18269/ Issam Maamria, Michael Butler, Andrew Edmunds, and Abdolbaghi Rezazadeh. On an Extensible Rule-based Prover for Event-B, ABZ'2010.]
 
* [http://eprints.ecs.soton.ac.uk/21221/ Issam Maamria, Michael Butler. Rewriting and Well-Definedness within a Proof System.]
 
 
 
 
 
[[Category:Plugin]]
 
[[Category:User documentation]]
 
[[Category:Proof]]
 
[[Category:Theory Plug-in]]
 

Revision as of 11:34, 28 April 2022

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