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neverendingbooks Posts

sudoku mania (bis)

Situation : my first class this year, about 20
fresh(wo)men, their second class this year.

Me : Okay, who
did some mathematics this vacation?

(No response
obviously, even if they did, it’s not a cool thing to
admit…)

Me : Sure, let me rephrase the question :
who thought about solving a puzzle or played a strategic game this
vacation?

(No response, or… is there?….. a
timid question :

‘Does Sudoku
count????’

Me : Well, not really but okay
let’s rephrase the question : Who solved at least 1 Sudoku this
vacation?

IMMEDIATE RESPONSE : about three quarters of all
students waving their arms!

Me :
Oof…….Oh…….Yes??? (to an even more timid
student raising his arm)

‘Does doing half a Sudoku
also counts?’

It’s going to be a tough
semester…

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nymphomation

If you prefer Neal Stephenson’s Snow crash to his bestseller Cryptonomicon you may have a fun time reading through Jeff Noon’s Nymphomation.

In a
‘parallel’ 1999’s Manchester, blurbflies (blurb stands for Bio-logical-Ultra-Robotic-Broadcasting-System) fill the air chanting their slogans, especially for _DominoBones_, the new lottery game which is on a year trial run in Manchester before going National.

A group of mathematics students are searching for the hidden mysteries behind the game. Their promotor is Prof. Max(imus) Hackle who has written a series of psychedelic sixties papers in a `journal’ called _Number Gumbo: A Mathemagical Grimoire_ with titles like “The No-Win Labyrinth: A solution to any such Hackle maze”, “Maze Dynamics and DNA Codings, a special theory of
Nymphomation” and “Fourth-Dimensional Orgasms and the Casanova Effect.”

He is also keen on using fun-terminology defining processes happening in the ‘Hackle maze’ and as such is a bit like John Conway. In fact, Conway’s Game of Life is a lot like Hackle’s maze.

There is some statistics and game theory in the book but the plot and ending are that of a good Postcyberpunk
novel, that is rather chaotic depending on possible future technological advances rather than the logical and unescapable ending of a good whodunnit.

After reading Nymphomation, a fly or a game of dominoes will never seem quite the same again.

Another nice feature are the non-sensical beginning sentences of every ‘chapter’. To some they seem like the rantings of a mad mathematician. To me they sound like a tribute to Finnegan’s Wake

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fall again

When the leaves start falling, so does the plane Jacobian conjecture,
or so it seems. The comparison is a bit weak in this case as two of the
authors of the preprint posted today at the arXiv A Proof of the Plane
Jacobian Conjecture
are based in Sydney, Australia… A
first glance through the paper shows that it uses Newton-polygons and
the 1975 Abyankar-Moh result on
embeddings of the line in the plane. Techniques that have been tried
before by numerous people in their attempts to tackle the plane Jacobian
conjecture
(the reference to Dean in this wikipedia entry is
outdated, as mentioned in an old blog
entry). Still, the paper just might be correct. As there
are several editors chasing me for overdue referee reports I have no
time to go through the proof in detail, but if you hear more on this
paper or have the energy to go through it, please leave a comment.

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