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1. About Me

Izaak Beekman

I am a graduate student at Princeton University's School of Engineering and Applied Science working in the CRoCCo Lab for Professor Pino Martin.

Note More coming soon.
Schedule

Google calendar My tentative schedule

GChat

zbeekman

AIM

f22jaguar2

SKYPE

zaak.beekman

IRC Nick

ibeekman

Channels I visit

#fortran, #bash, #emacs, #ubuntu

3. A Few Words of Wisdom

From a Python Easter Egg
import this
Output
The Zen of Python, by Tim Peters

Beautiful is better than ugly.
Explicit is better than implicit.
Simple is better than complex.
Complex is better than complicated.
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the temptation to guess.
There should be one-- and preferably only one --obvious way to do it.
Although that way may not be obvious at first unless you're Dutch.
Now is better than never.
Although never is often better than *right* now.
If the implementation is hard to explain, it's a bad idea.
If the implementation is easy to explain, it may be a good idea.
Namespaces are one honking great idea -- let's do more of those!

4. Some Formulae

$\frac{\partial u_i}{\partial x_j} = S_{ij} + \Omega_{ij}$

$S_{ij} = \frac{1}{2} \left( \frac{\partial u_i}{\partial x_j} + \frac{\partial u_j}{\partial x_i} \right)$

$\Omega_{ij} = \frac{1}{2} \left( \frac{\partial u_i}{\partial x_j} - \frac{\partial u_j}{\partial x_i} \right)$

$\omega_i = \epsilon_{ijk} \frac{\partial}{\partial x_j} u_k = -\epsilon_{ijk}\Omega_{jk}$

$\epsilon_{ijk} \epsilon_{lmn} \equiv \left| \begin{array}{ccc} \delta_{il} & \delta_{im} & \delta_{in} \\ \delta_{jl} & \delta_{jm} & \delta_{jn} \\ \delta_{kl} & \delta_{km} & \delta_{kn} \end{array} \right|$

$\mathrm{Det} \left( \mathbf{A} \right) = \sum_i \sum_j \sum_k a_{1i} a_{2j} a_{3k} \epsilon_{ijk}$

5. Some Fortran

Simple Fortran
MODULE example
   USE: modtypes, ONLY: DP ! from modtypes.f90
   IMPLICIT NONE
   REAL(DP), DIMENSION(:,:), ALLOCATABLE, PROTECTED :: foo, bar

   INTERFACE sum
      MODULE PROCEDURE :: sumvect, summatrix, sumcomplex
   END INTERFACE

CONTAINS
   SUBROUTINE sumvect(a,b)

   ! ...

END MODULE