Log24

Friday, May 30, 2014

Combinatorial Matrix Classes

Filed under: General,Geometry — Tags: — m759 @ 7:59 PM

A book by this title, Richard A. Brualdi’s  Combinatorial Matrix Classes ,
was published by Cambridge University Press in 2006:

For some related remarks, see The Counter (March 13, 2011).

My own work deals with combinatorial properties of matrices
of 0’s and 1’s, but in the context of Galois  (i.e., finite) fields,
not the real or complex fields. Despite the generality of
their titles, Combinatorial Matrix Theory  and Combinatorial
Matrix Classes  do not deal with Galois  matrices.

Matching Theory

Filed under: General — Tags: — m759 @ 12:00 PM

Some mathematical background for yesterday’s
remarks “For the Bregnans” and “Lost in Translation“—

Matching Theory: A Sampler, from Dénes König
to the Present
,” by Michael D. Plummer, 1991.

See also Matching Theory  by Plummer and Lovász.

Thursday, May 29, 2014

Lost in Translation

Filed under: General — Tags: , — m759 @ 1:45 PM

IMAGE- Original French of text from 'The Shining of May 29'

Translation by Barbara Johnson:

"The minimum number of rows— lines or columns—
that contain all the zeros in a matrix is equal to
the maximum number of zeros
located in any individual line or column ."

In the original:

"situés sur des lignes ou des colonnes distinctes "

Update of 11:30 PM ET May 29, 2014:

Derrida in 1972 was quoting Philippe Sollers, Nombres
(Paris: Éditions du Seuil , 1968).  Sollers in turn was
perhaps quoting A. Kaufmann, Méthodes et Modèles
de la Recherche Opérationnelle , Paris, Dunod , 1964,
L'Économie d'Entreprise 10 , vol. 2, page 305:

"Le nombre minimal de rangées
(lignes et/ou colonnes) contenant
tous les zéros d'une matrice, est égal
au nombre maximal de zéros
situés 
sur des lignes et des colonnes distinctes."

For the Bregnans*

Filed under: General — Tags: — m759 @ 2:25 AM

The Shining of May 29…

The original note and references to it here.

* As opposed to the Monicans . See previous post.

Wednesday, May 28, 2014

For the Monicans

Filed under: General — Tags: — m759 @ 9:48 PM

“Aeon Flux  suffered a decline of 63.97% in box office earnings, going down to No. 6 the following week. On 9 February 2006, it completed its theatrical run, grossing a domestic take of $25,874,337 and a worldwide box office total of $52,304,001. It failed to recoup its $62 million budget.” — Wikipedia

See also posts on the above date, 9 February 2006, and posts on Aeon Flux .

For Harvard’s Class Day

Filed under: General — Tags: — m759 @ 2:01 PM

Deep Talk

Filed under: General — Tags: — m759 @ 12:29 PM

The late Maya Angelou in The Paris Review , Fall 1990:

“There’s a phrase in West Africa, in Ghana; it’s called ‘deep talk.’
For instance, there’s a saying: ‘The trouble for the thief is not
how to steal the chief’s bugle but where to blow it.’
Now, on the face of it, one understands that. But when you really
think about it, it takes you deeper. In West Africa they call that
‘deep talk.’ I’d like to think I write ‘deep talk.'”

“Where to blow it” … Perhaps Truman State University?

See a theatrical production there on Sept. 26, 2012,
and a talk by the author there on the following day.

See also an apparently more amusing play by the same author.

Tuesday, May 27, 2014

Design

Filed under: General — Tags: — m759 @ 2:00 PM

In memory of a graphic designer
who reportedly died this morning:

IMAGE- Massimo Vignelli, his wife Lella, and cube

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