]> 2008/06/10 OpenCyc Knowledge Base Copyright© 2001-2008 Cycorp, Inc., http://www.cyc.com/, Austin, TX, USA This file contains an OWL representation of information contained in the OpenCyc Knowledge Base. The content of this OWL file is licensed under the Creative Commons Attribution 3.0 license whose text can be found at http://creativecommons.org/licenses/by/3.0/legalcode. The content of this OWL file, including the OpenCyc content it represents, constitutes the "Work" referred to in the Creative Commons license. The terms of this license equally apply to, without limitation, renamings and other logically equivalent reformulations of the content of this OWL file (or portions thereof) in any natural or formal language, as well as to derivations of this content or inclusion of it in other ontologies. externalID A unique, language-neutral, variable-sized identifier for a concept that can be used to refer unambiguously to that concept across OWL exports or across Cyc inference engines. label A natural-language representation for a concept that is both human readable and readable by the Cyc inference engine. These terms are not guaranteed to refer to the same concept across time but are guaranteed to be consistent within a particular OWL export. Use 'cycAnnot:externalID' for unambiguously referring to a concept across OWL exports or across Cyc inference engines. Linux distribution LinuxOS A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvwJcVZwpEbGdrcN5Y29ycA" class="cyc_term">UnixOS</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQHMdpwpEbGdrcN5Y29ycA" class="cyc_term">OpenSourceComputerProgram</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwUCtxpwpEbGdrcN5Y29ycA" class="cyc_term">LinuxOS</a> is an operating system built around <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rviFn3pwpEbGdrcN5Y29ycA" class="cyc_term">LinuxKernel_TheProgram</a> (q.v). Instances (known as &quot;distributions&quot;) include <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvuGfGZwpEbGdrcN5Y29ycA" class="cyc_term">Linux_RedHat</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv_SfEZwpEbGdrcN5Y29ycA" class="cyc_term">Linux_Caldera</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwN0Z1JwpEbGdrcN5Y29ycA" class="cyc_term">Linux_YellowDog</a>, etc. See <font color="#ff0000">#$SharedNoteOnOperatingSystemsAndKernels</font>. Linux distributions Linux operating systems Linux operating system Linux-Slackware Slackware Linux Linux Linux A free Unix-type (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViHlJwpEbGdrcN5Y29ycA" class="cyc_term">Unix</a>) operating system, the kernel of which was originally created by Linus Torvalds with the assistance of developers around the world (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rviFn3pwpEbGdrcN5Y29ycA" class="cyc_term">LinuxKernel_TheProgram</a>), and is an independent POSIX implementation which includes true multitasking, virtual memory, shared libraries, demand loading, TCP/IP networking, and other features consistent with Unix-type systems. Much of the system which surrounds the kernel was developed, at least initially, by the <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rveWD0pwpEbGdrcN5Y29ycA" class="cyc_term">GNUProject</a>. Linux-Halloween Halloween Linux S.u.S.E. Linux Linux-SuSE Beta releases for <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvuGfGZwpEbGdrcN5Y29ycA" class="cyc_term">Linux_RedHat</a>, a Linux operating system (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwUCtxpwpEbGdrcN5Y29ycA" class="cyc_term">LinuxOS</a>) and user interface software produced by <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv1KYSpwpEbGdrcN5Y29ycA" class="cyc_term">RedHat_Corporation</a>. Linux-RawHide RawHide Linux Connectiva Linux Linux-Conectiva Linux-Mandrake Mandrake Linux YellowDog Linux Linux-YellowDog Linux-RedHat A Linux operating system (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwUCtxpwpEbGdrcN5Y29ycA" class="cyc_term">LinuxOS</a>) and user interface software produced by <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv1KYSpwpEbGdrcN5Y29ycA" class="cyc_term">RedHat_Corporation</a>. RedHat Linux NSA Security-Enhanced Linux Security-EnhancedLinux-TheProgram Security-Enhanced Linux is developed and distributed by the U.S. National Security Agency. This version of Linux has a strong, flexible mandatory access control architecture incorporated into the major subsystems of the kernel. The system provides a mechanism to enforce the separation of information based on confidentiality and integrity requirements. This allows threats of tampering and bypassing of application security mechanisms to be addressed and enables the confinement of damage that can be caused by malicious or flawed applications. Secure Linux Linux-Trustix Linux-Corel Corel Linux Debian Linux Linux-Debian Caldera OpenLinux Linux-Caldera Linux-Turbo Turbo Linux Linux distribution LinuxOS A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvwJcVZwpEbGdrcN5Y29ycA" class="cyc_term">UnixOS</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQHMdpwpEbGdrcN5Y29ycA" class="cyc_term">OpenSourceComputerProgram</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwUCtxpwpEbGdrcN5Y29ycA" class="cyc_term">LinuxOS</a> is an operating system built around <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rviFn3pwpEbGdrcN5Y29ycA" class="cyc_term">LinuxKernel_TheProgram</a> (q.v). Instances (known as &quot;distributions&quot;) include <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvuGfGZwpEbGdrcN5Y29ycA" class="cyc_term">Linux_RedHat</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv_SfEZwpEbGdrcN5Y29ycA" class="cyc_term">Linux_Caldera</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwN0Z1JwpEbGdrcN5Y29ycA" class="cyc_term">Linux_YellowDog</a>, etc. See <font color="#ff0000">#$SharedNoteOnOperatingSystemsAndKernels</font>. open source program OpenSourceComputerProgram A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwJxiRJwpEbGdrcN5Y29ycA" class="cyc_term">ComputerProgram_CW</a>. <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQHMdpwpEbGdrcN5Y29ycA" class="cyc_term">OpenSourceComputerProgram</a> is the collection of programs for which the <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rva7pXZwpEbGdrcN5Y29ycA" class="cyc_term">ComputerCode_Source</a> is available to anyone who owns a copy of the program. That means owners are free to run, copy, distribute, study, change, and improve the software. Some prominent instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQHMdpwpEbGdrcN5Y29ycA" class="cyc_term">OpenSourceComputerProgram</a> are the <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvmL3BpwpEbGdrcN5Y29ycA" class="cyc_term">ApacheWebServer</a> -- which operates a significant number of the world's web sites, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvrDqzpwpEbGdrcN5Y29ycA" class="cyc_term">BIND_TheProgram</a> -- that provides the domain name service for the Internet, the <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv8H-YJwpEbGdrcN5Y29ycA" class="cyc_term">Linux</a> operating system, GNU software packages, and many computer games. ObjectType The collection of all collections that are &quot;object-like&quot; in at least one respect. A collection <code><b>COL</b></code> is object-like just in case there is some sense of 'part' according to which any (or nearly any) given proper part of an instance of <code><b>COL</b></code> is <i>not</i> itself an instance of <code><b>COL</b></code>; when this happens <code><b>COL</b></code> is said to be object-like with respect to that sense of 'part'. <p/> More precisely, for a collection <code><b>COL</b></code> to be an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVirnZwpEbGdrcN5Y29ycA" class="cyc_term">ObjectType</a> it is sufficient that there be some specialization <code><b>PARTPRED</b></code> of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwgfukKs8QdePzLB9nLNpTw" class="cyc_term">properParts</a> such that, for any <code><b>OBJ1</b></code> and <code><b>OBJ2</b></code>, if <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBBJwpEbGdrcN5Y29ycA" class="cyc_term">isa</a> <b>OBJ1</b> <b>COL</b>)</code> and <code>(<b>PARTPRED</b> <b>OBJ1</b> <b>OBJ2</b>)</code> both hold, then <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBBJwpEbGdrcN5Y29ycA" class="cyc_term">isa</a> <b>OBJ2</b> <b>COL</b>)</code> does <i>not</i> hold. (Also sufficient for <code><b>COL</b></code>'s being an object-type is that there be some specialization <code><b>INVPARTPRED</b></code> of the <i>inverse</i> of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwgfukKs8QdePzLB9nLNpTw" class="cyc_term">properParts</a> (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvWHsNJwpEbGdrcN5Y29ycA" class="cyc_term">genlInverse</a>) such that <code>(<b>INVPARTPRED</b> <b>OBJ2</b> <b>OBJ1</b>)</code>, with everything else remaining the same as above.) Note that neither of the above sufficient conditions for <code><b>COL</b></code>'s being an object-type is strictly necessary: some exceptions are allowed. Thus as long as either one of the above conditionals holds in <i>nearly</i> all cases, <code><b>COL</b></code> should be considered an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVirnZwpEbGdrcN5Y29ycA" class="cyc_term">ObjectType</a>. <p/> Here are two examples. Consider <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViVwZwpEbGdrcN5Y29ycA" class="cyc_term">Automobile</a>. Take an instance of that, say my car. Now consider one of the proper <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj5FpwpEbGdrcN5Y29ycA" class="cyc_term">physicalParts</a> of my car, say the steering wheel. The steering wheel is <i>not</i> an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViVwZwpEbGdrcN5Y29ycA" class="cyc_term">Automobile</a>. And the same would be true for any proper physical part of any car. So <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViVwZwpEbGdrcN5Y29ycA" class="cyc_term">Automobile</a> is an <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVirnZwpEbGdrcN5Y29ycA" class="cyc_term">ObjectType</a>. Consider <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjyV5wpEbGdrcN5Y29ycA" class="cyc_term">CalendarYear</a>. No proper <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvWn4OZwpEbGdrcN5Y29ycA" class="cyc_term">timeSlices</a> of a year is itself a year. So <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjyV5wpEbGdrcN5Y29ycA" class="cyc_term">CalendarYear</a> is an <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVirnZwpEbGdrcN5Y29ycA" class="cyc_term">ObjectType</a>. <p/> See <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVir35wpEbGdrcN5Y29ycA" class="cyc_term">StuffType</a> for the contrasting (though not disjoint) notion of being stuff-like. type of object Pretty String (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwLSVCpwpEbGdrcN5Y29ycA" class="cyc_term">prettyString</a> TERM STRING) means that STRING is the English word or expression (sequence of words) commonly used to refer to TERM. The predicate <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwLSVCpwpEbGdrcN5Y29ycA" class="cyc_term">prettyString</a> is used by the code which generates CycL to English paraphrases, but its applicability is not restricted to this use. prettyString Linux distribution LinuxOS A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvwJcVZwpEbGdrcN5Y29ycA" class="cyc_term">UnixOS</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQHMdpwpEbGdrcN5Y29ycA" class="cyc_term">OpenSourceComputerProgram</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwUCtxpwpEbGdrcN5Y29ycA" class="cyc_term">LinuxOS</a> is an operating system built around <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rviFn3pwpEbGdrcN5Y29ycA" class="cyc_term">LinuxKernel_TheProgram</a> (q.v). Instances (known as &quot;distributions&quot;) include <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvuGfGZwpEbGdrcN5Y29ycA" class="cyc_term">Linux_RedHat</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv_SfEZwpEbGdrcN5Y29ycA" class="cyc_term">Linux_Caldera</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwN0Z1JwpEbGdrcN5Y29ycA" class="cyc_term">Linux_YellowDog</a>, etc. See <font color="#ff0000">#$SharedNoteOnOperatingSystemsAndKernels</font>. UNIX operating system A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViws5wpEbGdrcN5Y29ycA" class="cyc_term">OperatingSystem</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvwJcVZwpEbGdrcN5Y29ycA" class="cyc_term">UnixOS</a> is an operating system derived from the original <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViHlJwpEbGdrcN5Y29ycA" class="cyc_term">Unix</a> operating system developed at Bell Labs in the 1960's. An important specialization of this collection is <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwUCtxpwpEbGdrcN5Y29ycA" class="cyc_term">LinuxOS</a>. UnixOS type of temporally stuff-like thing A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVir35wpEbGdrcN5Y29ycA" class="cyc_term">StuffType</a> (q.v.) whose instances are all and only those collections that are temporally stuff-like. A collection <code><b>COL</b></code> is temporally stuff-like just in case every purely temporal part (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvWn4OZwpEbGdrcN5Y29ycA" class="cyc_term">timeSlices</a>) of an instance of <code><b>COL</b></code> is itself an instance of <code><b>COL</b></code>, unless it is a temporal part of a temporal granule of <code><b>COL</b></code> (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjaJJwpEbGdrcN5Y29ycA" class="cyc_term">granuleOfTemporalStuff</a>). <p/> More precisely, for a collection <code><b>COL</b></code> to be an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVitN5wpEbGdrcN5Y29ycA" class="cyc_term">TemporalStuffType</a> it is both a necessary and sufficient condition that for any <code><b>OBJ1</b></code> and <code><b>OBJ2</b></code> (with <code><b>OBJ2</b></code> at or above <code><b>COL</b></code>'s temporal granularity level), if <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBBJwpEbGdrcN5Y29ycA" class="cyc_term">isa</a> <b>OBJ1</b> <b>COL</b>)</code> and <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvWn4OZwpEbGdrcN5Y29ycA" class="cyc_term">timeSlices</a> <b>OBJ1</b> <b>OBJ2</b>)</code>, then <code>(<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViBBJwpEbGdrcN5Y29ycA" class="cyc_term">isa</a> <b>OBJ2</b> <b>COL</b>)</code>. <p/> Consider <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVi0gpwpEbGdrcN5Y29ycA" class="cyc_term">WalkingOnTwoLegs</a>. Take an arbitrary instance <code><b>WALK</b></code> of this collection (say Miss America 2000's victory walk down the runway and back); and then take an arbitrary time-slice <code><b>SUBWALK</b></code> of <code><b>WALK</b></code> that subsumes at least one instance of (the <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjaJJwpEbGdrcN5Y29ycA" class="cyc_term">granuleOfTemporalStuff</a> for <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVi0gpwpEbGdrcN5Y29ycA" class="cyc_term">WalkingOnTwoLegs</a>) <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViYBpwpEbGdrcN5Y29ycA" class="cyc_term">TakingAStep</a> (say her trip back from the end of the runway). <code><b>SUBWALK</b></code> is itself an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVi0gpwpEbGdrcN5Y29ycA" class="cyc_term">WalkingOnTwoLegs</a>. So <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVi0gpwpEbGdrcN5Y29ycA" class="cyc_term">WalkingOnTwoLegs</a> is an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVitN5wpEbGdrcN5Y29ycA" class="cyc_term">TemporalStuffType</a>. See <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViq35wpEbGdrcN5Y29ycA" class="cyc_term">TemporalObjectType</a> for the disjoint notion of being temporally object-like. TemporalStuffType Linux distribution LinuxOS A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvwJcVZwpEbGdrcN5Y29ycA" class="cyc_term">UnixOS</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwQHMdpwpEbGdrcN5Y29ycA" class="cyc_term">OpenSourceComputerProgram</a>. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwUCtxpwpEbGdrcN5Y29ycA" class="cyc_term">LinuxOS</a> is an operating system built around <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rviFn3pwpEbGdrcN5Y29ycA" class="cyc_term">LinuxKernel_TheProgram</a> (q.v). Instances (known as &quot;distributions&quot;) include <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvuGfGZwpEbGdrcN5Y29ycA" class="cyc_term">Linux_RedHat</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv_SfEZwpEbGdrcN5Y29ycA" class="cyc_term">Linux_Caldera</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwN0Z1JwpEbGdrcN5Y29ycA" class="cyc_term">Linux_YellowDog</a>, etc. See <font color="#ff0000">#$SharedNoteOnOperatingSystemsAndKernels</font>.