<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<p>Here's a recent paper from a friend of mine in the UK (Susan
Stepney) on the the topic of Abstraction/Representation theory:</p>
<p>"The representational entity in physical computing"<br>
</p>
<blockquote>
<p><a class="moz-txt-link-freetext" href="https://link.springer.com/article/10.1007/s11047-020-09805-3">https://link.springer.com/article/10.1007/s11047-020-09805-3</a></p>
</blockquote>
<p>from the introduction:</p>
<blockquote>
<p><span style="color: rgb(51, 51, 51); font-family: Georgia,
Palatino, serif; font-size: 18px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: 400; letter-spacing: normal; orphans: 2;
text-align: start; text-indent: 0px; text-transform: none;
white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(252,
252, 252); text-decoration-style: initial;
text-decoration-color: initial; display: inline !important;
float: none;">Many and diverse physical substrates are
proposed for unconventional computing, from relativistic and
quantum systems to chemical reactions and slime moulds, from
carbon nanotubes to non-linear optical reservoir systems, from
amorphous substrates to highly engineered devices, from
general purpose analogue computers to one-shot devices. In
another domain, biological systems are often said to perform
information processing. In all these cases it is crucial to be
able to determine when such substrates and systems are
specifically computing, as opposed to merely undergoing the
physical processes of that substrate.</span></p>
</blockquote>
<p><span style="color: rgb(51, 51, 51); font-family: Georgia,
Palatino, serif; font-size: 18px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: 400; letter-spacing: normal; orphans: 2;
text-align: start; text-indent: 0px; text-transform: none;
white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(252, 252,
252); text-decoration-style: initial; text-decoration-color:
initial; display: inline !important; float: none;"><br>
</span></p>
<p><span style="color: rgb(51, 51, 51); font-family: Georgia,
Palatino, serif; font-size: 18px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: 400; letter-spacing: normal; orphans: 2;
text-align: start; text-indent: 0px; text-transform: none;
white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(252, 252,
252); text-decoration-style: initial; text-decoration-color:
initial; display: inline !important; float: none;">this work
seems to relate to several recent threads here... I'd be very
interested in other's response to these ideas.</span></p>
<p><span style="color: rgb(51, 51, 51); font-family: Georgia,
Palatino, serif; font-size: 18px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: 400; letter-spacing: normal; orphans: 2;
text-align: start; text-indent: 0px; text-transform: none;
white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(252, 252,
252); text-decoration-style: initial; text-decoration-color:
initial; display: inline !important; float: none;">- Steve<br>
</span></p>
</body>
</html>