Bob Therriault is in the process of developing some reference animations for J.

He writes on my blog:

We are hoping to create an easier conceptual access to some of J's array processing primitives. What we really would like is feedback from those with 'fresh eyes'. So if anyone has access to a classroom of learners discovering array processing languages, send them our way!

J Animations These are great, folks. Take a look.

Just thought I'd let you know I've posted Jeffrey Shallit's unbridged talk at Ken Iverson's memorial in Toronto in 2004.

And for the pundits among you... I'll have you know that the full version of the 1974 Origins of APL video has had 3,502 plays to date. Who would have thought!


Jaffrey Shallit @ KEI Memorial

Catherine | MySpace Video

To read more about it see my blog.

The second edition of At Play With J, collected from Eugene McDonnell?s columns for Vector, has been published at Lulu.com.

Here in one volume are Eugene McDonnell?s 41 excellent articles published between 1993 and 2006. They form a series of straightforward but profound mathematical investigations which are not only entertaining but expand the mind.

The classical tradition founded by Fermat and Gauss mystifies the mathematical art by concealing the way in which the investigator found the solution in the first place. Trainee researchers will gain reassurance from the fact that the author does not shy away from expressing perplexity and puzzlement along the often rocky road to a solution. As such it constitutes a unique masterclass in how to do mathematical research.

The second edition has been produced by a team of J experts, revising and reworking the examples to correspond to best practice with J 6.02. With prefaces by Roger Hui and Chris Burke.

The first edition reproduced the original Vector articles with only minor amendments. But J evolved over the many years during which McDonnell wrote his column, and in the latest version of J not all the examples work as they were given. The first edition is of largely historical interest.

I had a wonderful time at the Kdb+ User Group Meeting last week in NYC.

Remember this guy? He was there... Simon Garland!

The stories from the trip are still coming out on the blog and the photos are posted in Flickr !

In the latest J-ottings column, just posted to Vector, Norman Thomson mixes it with pandas, shoots and leaves. See Punctuation and rank

Just posted at Vector: Jan Karman starts a series of articles on financial mathematics in q with Graduation of mortality

In a new article posted at Vector, R.E. Boss harvests new insights from generating combinations faster in J.

A new article posted at Vector recounts Catherine Lathwell?s talk to APL BUG about her documentary film project.

Springtime in Washington with APL2000

APL2000 User Conference - April 26-27, 2010


Plan to join the APL community as we gather in our Nation's capital to focus on the latest developments in APL2000 software. Attend informative presentations, engage in stimulating discussions, and enjoy the camaraderie of spending a few days with fellow APL enthusiasts. Special weekend hotel rates will be available to conference attendees who arrive early.
SAVE THE DATE

Mark your calendar for the APL2000 User Conference

April 26-27, 2010
The APL2000 Team looks forward to seeing you in April.

Sonia Beekman

Director of Sales & Marketing
APLNow LLC dba APL2000
One Research Court, Suite 140
Rockville, MD 20850
Phone: 301-208-7150
Fax: 301-208-7151
E-mail: sonia.beekman@apl2000.com

www.apl2000.com