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authorbnewbold <bnewbold@eta.mit.edu>2009-01-20 22:21:06 -0500
committerbnewbold <bnewbold@eta.mit.edu>2009-01-20 22:21:06 -0500
commit694370db05356b12c931a9bb4baa65a1dc0cfa16 (patch)
parent6c59affb8b848ef49240bf96ca8e4c8015769c80 (diff)
daily, minor
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diff --git a/journal/19jan2009.html b/journal/19jan2009.html
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+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head><title>bnewbold thesis</title></head>
+<body style="margin: 25px; font-family: helvetica;">
+<h1 style="border-bottom: 2px solid;">
+Journal: Jan 19, 2009</h1>
+<i>Bryan Newbold, <a href="mailto:bnewbold@mit.edu">bnewbold@mit.edu</a></i><br />
+<i><a href="http://web.mit.edu/bnewbold/thesis/">
+<br /><br />
+<!-- ================================================================ -->
+<!-- ================================================================ -->
+Finished the Seasoned Schemer yesturday. I've been looking through R5RS, it's
+great how short it is! (50 pages)
+From the scmutils manual:
+Some structures, such as the ones that represent inertia tensors, must
+be inverted. (The "m" above may be an inertia tensor!) Division is
+arranged to make this work, when possible. The details are too hairy
+to explain in this short document. We probably need to write a book
+about this!
+<br /><br />
+I also liked this quote from Sean Carrol's Spacetime and Geometry (p485):
+The nice property of tensors, that there is usually only one sensible thing to do based on index placement, is of great help here."
+Sounds like a call for computation?
+<hr />
+I've been working on a sage/scheme interface a bit. The problem i'm running
+into now is disabling the interrupt REPL in MIT/GNU Scheme; I just want it to
+leave an error string and drop back to the base REPL. I could edit the pexpect
+routines in sage to try and catch all the pretinent interrupt strings, but
+I think it would be better to just have the error interrupt hook in scheme
+do the simple thing.
+<br />
+For now, i'm actually going to switch over to the "scm" scheme distribution
+which is much simpler and get that going well with sage, then try MIT/GNU
+scheme again.
+<br /><br />
+<a href="16jan2009.html"><i>(previous entry</i></a>
+<!-- ================================================================ -->
+<!-- ================================================================ -->
diff --git a/main.html b/main.html
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@@ -45,7 +45,8 @@ bryannewbold.com/cal</a>.<br /><br />
do it, after this point I shouldn't be focusing on the software
tools as much.
<tr /><td />Jan 19-26?
- <td />Work through "Functional Differential Geometry", rewriting by hand
+ <td />Work through "Functional Differential Geometry", writing out
+ examples by hand
<tr /><td />Jan 31
<td />By this date have a proposed outline with length estimates so
I can sanity check with somebody in the physics department.
diff --git a/to_athena.sh b/to_athena.sh
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-scp -r main.html journal README bnewbold@linux.mit.edu:thesis/
+scp -r main.html journal other README bnewbold@linux.mit.edu:thesis/