<!DOCTYPE html><HTML lang="en"> <head><meta charset="utf-8"> <title>Marcus (Ruth Barcan) - Essentialism in Modal Logic (Theo Todman's Book Collection - Paper Abstracts) </title> <link href="../../TheosStyle.css" rel="stylesheet" type="text/css"><link rel="shortcut icon" href="../../TT_ICO.png" /></head> <BODY> <CENTER> <div id="header"><HR><h1>Theo Todman's Web Page - Paper Abstracts</h1><HR></div><A name="Top"></A> <TABLE class = "Bridge" WIDTH=950> <tr><th><A HREF = "../../PaperSummaries/PaperSummary_05/PaperSummary_5611.htm">Essentialism in Modal Logic</A></th></tr> <tr><th><A HREF = "../../Authors/M/Author_Marcus (Ruth Barcan).htm">Marcus (Ruth Barcan)</a></th></tr> <tr><th>Source: Nous, 1.1 (Mar. 1967) pp. 91-96</th></tr> <tr><th>Paper - Abstract</th></tr> </TABLE> </CENTER> <P><CENTER><TABLE class = "Bridge" WIDTH=400><tr><td><A HREF = "../../PaperSummaries/PaperSummary_05/PaperSummary_5611.htm">Paper Summary</A></td><td><A HREF="#ColourConventions">Text Colour-Conventions</a></td></tr></TABLE></CENTER></P> <hr><P><FONT COLOR = "0000FF"><U>Philosophers Index Abstract</U><FONT COLOR = "800080"><ol type="1">Essentialism is minimally characterized as requiring that there are properties which some objects have necessarily and other objects do not have necessarily. Varieties of essentialism represent strengthening of this condition. It is argued that <a name="1"></a><A HREF="../../Notes/Notes_1/Notes_121.htm">modal logic</A><SUP>1</SUP> is not committed to essentialism in the sense of generating provable or non-trivially true statements of essential attribution. The trivial cases, e.G., The attribute of being identical to the object 'a' which is necessary of the object 'a' and not necessary of any other object; are partial instantiations of valid functions, and logically equivalent to statements which do not involve essential attributes, e.G., "'A' is necessarily identical to 'a'" is logically equivalent to "'a' is necessarily self identical," and self identity is true of everything, not just 'a'. <a name="2"></a><A HREF="../../Notes/Notes_1/Notes_121.htm">Modal logic</A><SUP>2</SUP> is neutral with respect to serious essentialist claims, e.G., Aristotle's claim that being a man is an essential attribute where those attributes are not partial instantiations of valid functions.</ol></FONT><FONT COLOR = "0000FF"><HR></P><a name="ColourConventions"></a><p><b>Text Colour Conventions (see <A HREF="../../Notes/Notes_10/Notes_1025.htm">disclaimer</a>)</b></p><OL TYPE="1"><LI><FONT COLOR = "0000FF">Blue</FONT>: Text by me; &copy; Theo Todman, 2018</li><LI><FONT COLOR = "800080">Mauve</FONT>: Text by correspondent(s) or other author(s); &copy; the author(s)</li></OL> <BR><HR><BR><CENTER> <TABLE class = "Bridge" WIDTH=950> <TR><TD WIDTH="30%">&copy; Theo Todman, June 2007 - August 2018.</TD> <TD WIDTH="40%">Please address any comments on this page to <A HREF="mailto:theo@theotodman.com">theo@theotodman.com</A>.</TD> <TD WIDTH="30%">File output: <time datetime="2018-08-03T00:11" pubdate>03/08/2018 00:11:23</time> <br><A HREF="../../Notes/Notes_10/Notes_1010.htm">Website Maintenance Dashboard</A></TD></TR> <TD WIDTH="30%"><A HREF="#Top">Return to Top of this Page</A></TD> <TD WIDTH="40%"><A HREF="../../Notes/Notes_11/Notes_1140.htm">Return to Theo Todman's Philosophy Page</A></TD> <TD WIDTH="30%"><A HREF="../../index.htm">Return to Theo Todman's Home Page</A></TD> </TR></TABLE></CENTER><HR> </BODY> </HTML>