<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Oct 28, 2021, at 11:53 AM, Jon Zingale <<a href="mailto:jonzingale@gmail.com" class="">jonzingale@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><div class="gmail_default" style="font-size:small;color:rgb(51,51,51)"><font face="verdana, sans-serif" class="">"""</font></div><div class="gmail_default" style="font-size:small;color:rgb(51,51,51)"><pre style="white-space: pre-wrap;" class=""><font face="verdana, sans-serif" class="">There is a formalism for discrete-event dynamical systems known as “bond graphs”. </font></pre><pre style="white-space: pre-wrap;" class=""><font face="verdana, sans-serif" class="">"""</font></pre><pre style="white-space: pre-wrap;" class=""><font face="verdana, sans-serif" class="">From a brief survey of the wikipedia entry: </font><a href="https://en.wikipedia.org/wiki/Bond_graph" class="">https://en.wikipedia.org/wiki/Bond_graph</a></pre><pre style="white-space: pre-wrap;" class=""><font face="verdana, sans-serif" class="">I see one of the advantages of bond graphs over traditional hypergraphs is the bi-directional nature of the linkages. How similar is the bond graph formalism to the generalization of hypergraphs to operads?</font></pre></div></div></div></blockquote><div><br class=""></div><div>Ack! New term I have never heard. Will have to become a better person to be able to attempt an answer!</div><div><br class=""></div><div>(That would be an Erdos-type neologism for “do some work and learn something”.)</div><div><br class=""></div><div>E</div><div><br class=""></div><div><br class=""></div><br class=""><blockquote type="cite" class=""><div class="">
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