*To*: Brian Huffman <huffman at in.tum.de>*Subject*: Re: [isabelle] Inequalities on real numbers: How to use "(x::real) > 0 --> x >= 0"?*From*: Christoph LANGE <c.lange at cs.bham.ac.uk>*Date*: Fri, 10 Aug 2012 12:08:09 +0200*Cc*: Colin Rowat <c.rowat at bham.ac.uk>, Manfred Kerber <M.Kerber at cs.bham.ac.uk>, cl-isabelle-users at lists.cam.ac.uk*In-reply-to*: <CAAMXsiayP7z=SKiXA3bhQ0iav_AMqdJDEU+itHRTKTgOMGZs-w@mail.gmail.com>*Organization*: University of Birmingham*References*: <5024ABB2.8010900@cs.bham.ac.uk> <CAAMXsiayP7z=SKiXA3bhQ0iav_AMqdJDEU+itHRTKTgOMGZs-w@mail.gmail.com>*User-agent*: Mozilla/5.0 (X11; Linux x86_64; rv:14.0) Gecko/20120720 Thunderbird/14.0

Dear Brian, 2012-08-10 10:15 Brian Huffman:

somewhere in a proof that involves real numbers from the theory "Real" I would like to infer "(x::real) >= 0" from "x > 0". …by (rule less_imp_le)

excellent, thanks a lot for your quick reply!

Cheers, and thanks, Christoph -- Christoph Lange, School of Computer Science, University of Birmingham http://cs.bham.ac.uk/~langec, Skype duke4701 → Building & Exploring Web Based Environments. Seville, Spain, 27 Jan– 1 Feb 2013. Deadline 2 Sep. http://iaria.org/conferences2013/WEB13.html

**Follow-Ups**:**Re: [isabelle] Inequalities on real numbers: How to use "(x::real) > 0 --> x >= 0"?***From:*Johannes Hölzl

**Re: [isabelle] Inequalities on real numbers: How to use "(x::real) > 0 --> x >= 0"?***From:*Brian Huffman

**Re: [isabelle] Inequalities on real numbers: How to use "(x::real) > 0 --> x >= 0"?***From:*Lawrence Paulson

**References**:**[isabelle] Inequalities on real numbers: How to use "(x::real) > 0 --> x >= 0"?***From:*Christoph LANGE

**Re: [isabelle] Inequalities on real numbers: How to use "(x::real) > 0 --> x >= 0"?***From:*Brian Huffman

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