From: Robert Miner <robertm@dessci.com>

Date: Wed, 16 May 2007 07:57:42 -0700

Message-ID: <D1EFB337111B674B8F1BE155B01C6DD601DBF6A6@franklin.corp.dessci>

To: "Mov GP 0" <movgp0@gmail.com>

Cc: <www-math@w3.org>

Date: Wed, 16 May 2007 07:57:42 -0700

Message-ID: <D1EFB337111B674B8F1BE155B01C6DD601DBF6A6@franklin.corp.dessci>

To: "Mov GP 0" <movgp0@gmail.com>

Cc: <www-math@w3.org>

Hi. Thanks for your proposals. The idea of a presentation element for units has come up before, and has a lot of appeal. It was much discussed when Stan Devitt and Doug Harder were putting together their Note on Units in MathML[1] http://www.w3.org/TR/2003/NOTE-mathml-units-20031110/ which you refer to indirectly. Clearly to get a single character unit e.g. 'g' or 'm' to display in a upright font using an <mi>, one must use a mathvariant attribute, or the class='MathML-Unit' attribute with an appropriate rule in a CSS environment (or both, when you don't know what user agent may render the results). The chief downside to introducing a new element is that the mi markup really does produce the desired rendering -- the hypothetical <mu> element doesn't have any unique rendering properties, and thus is not really a distinct notational schema. Presentation MathML already has a lot of duplication and redundancy, and many people think we shouldn't make it worse. Anyone else feel strongly one way or the other about a dedicated element for units in presentation MathML? --Robert Robert Miner Director, New Product Development W3C Math WG co-chair Design Science, Inc. 140 Pine Avenue, 4th Floor Long Beach, California 90802 USA Tel: (651) 223-2883 Fax: (651) 292-0014 robertm@dessci.com www.dessci.com ~ Makers of MathType, MathFlow, MathPlayer, WebEQ, Equation Editor, TexAide ~ > -----Original Message----- > From: www-math-request@w3.org [mailto:www-math-request@w3.org] On Behalf > Of Mov GP 0 > Sent: Wednesday, May 02, 2007 5:07 PM > To: www-math@w3.org > Subject: Re: MathML 3.0 and MathML for CSS First Public Working Drafts > > > Hi, > I'm suggesting a <mu> Element for rendering Units. This is because > Units are rendered in a roman-font, while Identifiers (<mi>) are > rendered cursive. I think the <mu> Element will ease this issure more > than using ie. the class-Attribute. > > Also, I'm not sure how to markup user defined functions (and > parameters), user defined number sets, number rings, vectors and > matrices, and Structures like Quaternions, Biquaternions, Sedenions, > and p-adic Numbers. > As example, the current standard don't makes the difference inner or > dot product, cross product, divergence, and curl of vectors. The > standard should clarify how to represent such things. > > Another issure is, that the successor of MathML should keep RDF in > mind. Therefore, mathematical expressions should be expressed as > RDF-graphs. Currently there are much efforts like OMDoc to creating a > ontology over MathML, but I think, that MathML should be rather > defined based on a ontology, so its semantic from the start. > Because this will be incompatible with the current cMathML this might > result in a separate standard like semantic MathML (sMathML) or > RDF-MathML (rMathML). I've sketched this Idea at > http://wiki.ontoworld.org/wiki/Semantic_MathML but never finished it > (and never will). But I think that will help to get the picture. > > > Regards, > MovGP0 > > > 2007/5/2, Patrick Ion <ion@ams.org>: > > > > > > > > The W3C Math WG is pleased to be able to point to the publication > > by the W3C of its initial First Public Working Drafts. They are > > > > Mathematical Markup Language (MathML) Version 3.0 > > http://www.w3.org/TR/MathML3/ > > > > A MathML for CSS Profile > > http://www.w3.org/TR/mathml-for-css/ > > > > The Abstract and Status sections of the drafts are reproduced below. > > These documents are very much at the FPWD stage. The Math WG hopes to > > be able to publish refinements of them in line with the W3C heart-beat > > process > > requirements. There is a description of some considerations > underlying > > this work in the W3C Math WG's public Roadmap. > > > > Feedback should be sent to this W3C Public Math Mailing List. > > > > > > > > Patrick and Robert (W3C Math WG co-chairs) > > > > > > ========== > > MathML 3.0 > > > > > > > > Abstract > > > > This specification defines the Mathematical Markup Language, or MathML. > > MathML is an XML application for describing mathematical notation and > > capturing both its structure and content. The goal of MathML is to > enable > > mathematics to be served, received, and processed on the World Wide > Web, > > just as HTML has enabled this functionality for text. > > > > This specification of the markup language MathML is intended primarily > for a > > readership consisting of those who will be developing or implementing > > renderers or editors using it, or software that will communicate using > > MathML as a protocol for input or output. It is not a User's Guide but > > rather a reference document. > > > > MathML can be used to encode both mathematical notation and > mathematical > > content. About thirty-five of the MathML tags describe abstract > notational > > structures, while another about one hundred and seventy provide a way > of > > unambiguously specifying the intended meaning of an expression. > Additional > > chapters discuss how the MathML content and presentation elements > interact, > > and how MathML renderers might be implemented and should interact with > > browsers. Finally, this document addresses the issue of special > characters > > used for mathematics, their handling in MathML, their presence in > Unicode, > > and their relation to fonts. > > > > While MathML is human-readable, in all but the simplest cases, authors > use > > equation editors, conversion programs, and other specialized software > tools > > to generate MathML. Several versions of such MathML tools exist, and > more, > > both freely available software and commercial products, are under > > development. > > > > Status of this Document > > > > This section describes the status of this document at the time of its > > publication. Other documents may supersede this document. A list of > current > > W3C publications and the latest revision of this technical report can > be > > found in the W3C technical reports index at http://www.w3.org/TR/. > > > > This document is a W3C First Public Working Draft produced by the W3C > Math > > Working Group as part of the W3C Math Activity. The goals of the W3C > Math > > Working Group are discussed in the W3C Math WG Charter (revised July > 2006). > > A list of participants in the W3C Math Working Group is available. > > > > This First Public Working Draft must be viewed as a work in progress, > and > > not yet suitable for reference. It specifies a new version of the the > > Mathematical Markup Language, MathML 3.0 [mathml] which is at present > under > > active development. The Math WG hopes this outline draft will permit > > informed feedback on this most important part of its work. There is a > > description of some considerations underlying this work in the W3C > Math WG's > > public Roadmap [roadmap]. Feedback should be sent to the Public W3C > Math > > mailing list . > > > > The MathML 2.0 (Second Edition) specification has been a W3C > Recommendation > > since 2001. During the period since its recommendation, a W3C Math > Interest > > Group collected the experience with the deployment of MathML and > identified > > issues with MathML that might be ameliorated. The rechartering af a > Math > > Working Group allows the revision to MathML 3.0 in the light of that > > experience, of other comments on the markup language, and of recent > changes > > in specifications of the W3C and in the technological context. MathML > 3.0 > > does not signal any change in the overall design of MathML. However, > the > > specification document will be almost completely rewritten to provide > a > > coherent whole containing corrections to all the known errata and > > clarifications of issues that proved problematic and additions made. > > Throughout pains are being taken to distinguish the normative and > > non-normative aspects. > > > > Public discussion of MathML and issues of support through the W3C for > > mathematics on the Web takes place on the public mailing list of the > Math > > Working Group (list archives). To subscribe send an email to > > www-math-request@w3.org with the word subscribe in the subject line. > > > > Please report errors in this document to www-math@w3.org. > > > > Patent disclosures relevant to this specification may be found on the > Math > > Working Group's patent disclosure page. > > > > The basic structure of this document is the same as that of the > earlier > > MathML 2.0 Recommendation [MathML2]. MathML 2.0 itself was a revision > of the > > earlier W3C Recommendation MathML 1.01 [MathML1]; MathML 3.0 itself is > a > > revision of the W3C Recommendation MathML 2.0. It differs from it in > that > > all chapters will have been updated, some new elements and attributes > are > > being added and some have been deprecated. > > Chapters 1 and 2, which are introductory material, have yet to be > revised to > > reflect the changes elsewhere in the document, and in the rapidly > evolving > > Web environment. > > Chapters 3, on presentation-oriented markup, is being extended to > describe > > new functionalities added as well as smaller improvements of material > > already proposed. As a result of concerns for support of high-quality > > typesetting and for the relationship with CSS the element mpadded has > been > > revised, and the maction remains under discussion for possible > deprecation. > > As a result of earlier work, as recorded in the W3C Note Arabic > mathematical > > notation, the relationship with bidirectional text is being clarified. > In > > addition, some adjustments that have proven necessary for easy markup > of > > elementary school mathematics have been made. > > Chapters 4, on content-oriented markup, has been completely > regenerated. The > > actual content is unchanged in essence, except for a number of > elements the > > addition of which seemed natural, such as some for use in statistics. > The > > text of this chapter is now generated by filtered extraction from XML > > content dictionaries written in accordance with OpenMath. The > advantages of > > this method include a level of consistency in interpretation that the > > previous version perhaps did not achieve, automatic generation of some > > useful and informative tabulations, and a guarantee of alignment with > the > > basic part of OpenMath that the community will appreciate. > > Chapter 5 will be newly written to reflect changes in the technology > > available. Chapter 6 has been rewritten and reorganized to reflect the > new > > situation in regard to Unicode. It is expected that some new ancillary > > tables will be provided that reflect requests the WG has received. > Chapter 7 > > needs revision yet again since Web technology has changed again. > > Chapter 8 on the DOM and the associated appendices D and E for > detailed > > listings will be revised further as proves necessary. For instance, > the DTD > > is already implicated as a result of the profile MathML for CSS that > the WG > > is preparing; that is also a new FPWD. > > > > <<< > > > > > > ====== > > > > MathML for CSS > > > > > > > > > > Abstract > > > > This document describes a profile of MathML 3.0 designed for ease of > > formatting with Cascading Style Sheets. > > > > Status of this Document > > > > This section describes the status of this document at the time of its > > publication. Other documents may supersede this document. A list of > current > > W3C publications and the latest revision of this technical report can > be > > found in the W3C technical reports index at http://www.w3.org/TR/. > > > > This document is a W3C First Public Working Draft produced by the W3C > Math > > Working Group as part of W3C Math Activity. The goals of the W3C Math > > Working Group are discussed in the W3C Math WG Charter. The authors of > this > > document are the W3C Math Working Group members. > > > > This First Public Working Draft must be viewed as a work in progress, > and > > not yet suitable for reference. It specifies a profile of a > specification, > > MathML 3.0, which is itself under development, and is intended to > accord > > with CSS 3, which is also under active development. The Math WG hopes > this > > outline draft will permit informed feedback on this part of its work, > > although only a few of the elements show a full discussion of their > special > > properties in connection with CSS. There is also a short description > of some > > considerations underlying this work in the W3C Math WG's public > Roadmap. > > Feedback should be sent to the Public W3C Math mailing list . > > > > <<< > > > > > > > > >Received on Wednesday, 16 May 2007 14:57:52 GMT

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