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Author: lievenlb

nostalgia

Unlike the
cooler people out there, I haven’t received my
_pre-ordered_ copy (via AppleStore) of Tiger yet. Partly my own fault
because I couldn’t resist the temptation to bundle up with a
personalized iPod Photo!
The good news is that it buys me more time to follow the
housecleaning tips
. First, my idea was to make a CarbonCopyClooner
image of my iBook and put it on the _iMac_ upstairs which I
rarely use these days, do a clean
Tiger install
on the iBook and gradually copy over the essential
programs and files I need (and only those!). But reading the
macdev-article, I think it is better to keep my iBook running Panther
and experiment with Tiger on the redundant iMac. (Btw. unless you want
to have a copy of my Mac-installation there will be hardly a point
checking this blog the next couple of weeks as I intend to write down
all details of the Panther/Tiger switch here.)

Last week-end I
started a _Paper-rescue_ operation, that is, to find among the
multiple copies of books/papers/courses, the ones that contain all the
required material to re-TeX them and unfortunately my _archive_
is in a bad state. There is hardly a source-file left of a paper prior
to 1999 when I started putting all my papers on the arXiv.

On the other hand, I do
have saved most of my undergraduate courses. Most of them were still
using postscript-crap like _epsfig_ etc. so I had to convert all
the graphics to PDFs (merely using Preview ) and
modify the epsfig-command to _includegraphics_. So far, I
converted all my undergraduate _differential geometry_ courses
from 1998 to this year and made them available in a uniform
screen-friendly viewing format at TheLibrary/undergraduate.

There are two
ways to read the changes in these courses over the years. (1) as a shift
from _differential_ geometry to more _algebraic_ geometry
and (2) as a shift towards realism wrt.the level of our undegraduate
students. In 1998 I was still thinking
that I could teach them an easy way into Connes non-commutative standard
model but didn’t go further than the Lie group sections (maybe one day
I’ll rewrite this course as a graduate course when I ever get
reinterested in the Connes’ approach). In 1999 I had the illusion that
it might be a good idea to introduce manifolds-by-examples coming from
operads! In 2000 I gave in to the fact
that most of the students which had to follow this course were applied
mathematicians so perhaps it was a good idea to introduce them to
dynamical systems (quod non!). The 2001 course is probably the
most realistic one while still doing standard differential geometry. In
2002 I used the conifold
singularity and conifold transitions (deformations and blow-ups) as
motivation but it was clear that the students did have difficulties with
the blow-up part as they didn’t have enough experience in
_algebraic_ geometry. So the last two years I’m giving an
introduction to algebraic geometry culminating in blow-ups and some
non-commutative geometry.

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mind on tracks

I just
started putting my mind on tracks but it will take
me a couple of days to offload most of the crap that keeps me awake at
night. There are three main components to Tracks: Next actions, Contexts
and Projects.

Contexts are very flexible, and can
be places, states of mind or modes of working in which actions can be
taken. Next actions can be assigned to and sorted by context so that you
know when you are able to make progress with items. e.g. “Library”,
“Shops” or “Tired”.” So far I added only 10 contexts : _@inbox_,
_@books_, _@email_, _@home_, _@neverending_,
_@courses_, _@other_, _@papers_, _@computer_
and _@personal_. Probably I’ll have to add others such as
_@refereeing_ etc.

Projects : any goal
which requires more than one next action to take it to completion is a
Project. In Tracks, you can view your next actions by Project.” So far I
added the first few things that came to mind ranging from small-easy
things such as _Learn
VoodooPad_
over _Paper with Jan_ to neverending-things
like Write nag@n !

Next
actions
: These are the heart of GTD. They are the very next
physical action that can be taken on something. It’s best to phrase
these in an active way e.g. “Call Bob about the committee meeting” or
“Search for a reputable garage”.” Up to now I merely added the next
foreseeable action in each project together with a few urgent persoanl
matters. It is a good idea to give each of these a deadline so they
appear on the screen with a color-code giving the date and red (urgent),
orange (coming up) to green (some day). I realize I’ve been rather
relaxed about my projects so far!

More information on tracks can
be found here. Try it
out!

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a quickie

Here
is a fun link : SCIgen – An
Automatic CS Paper Generator
.

SCIgen is a
program that generates random Computer Science research papers,
including graphs, figures, and citations. It uses a hand-written
context-free grammar to form all elements of the papers. Our aim here is
to maximize amusement, rather than coherence.

One useful purpose for such a program is to auto-generate submissions
to conferences that you suspect might have very low submission
standards.

I took me a second to write my own computer science
paper
Deconstructing Red-Black Trees
.

From what i saw the last
couple of months at math.QA someone must
have modified the program into an _Automatic QA Paper Generator_
and was a bit too generous in letting her/his buddies use it…

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