Showing posts with label maths. Show all posts
Showing posts with label maths. Show all posts

Sunday, January 24, 2010

Seasonal poetry

Burns night is almost upon us so for the select few who appreciate Burns and mathematics here is Tim Davis's the Mouseholder QR:
Wee, sparsest, QR-factored Matrix,
O, what a panic's in my math tricks!
Thou need na space thine eigs like hay sticks
Wi' ditherin' low-bits!
I wad be laith to rin a quick fix,
Wi' murd'rin' page hits!

(or at least the first verse) read the whole thing - preferably with the correct accent - you'll find an mp3 on the linked page.

Monday, December 28, 2009

Is there reality at the other end of an email?

Back in February I wrote a piece which quoted a couple of blogs on the subjects of Afghanistan and Iran as a follow up to some reading and a viewing of Persepolis. I have an interest in both contemporary 'classical' music and mathematics so I was interested to see a blog about an Iranian composer/mathematician Keyvan Yahya. A couple of days ago that entry acquired an anonymous comment which suggested that Keyvan Yahya was not all he seemed, I went to the Wikipedia article which I had quoted and discovered that the mention of Keyvan Yahya had been removed around the same time as the comment was posted probably by someone from Iran. I initially gave the comment a rather dusty answer - my first guess was that the commenter (and possibly wikipedia editor, if they were one and the same) were likely to have Iranian government connections and they were trying, effectively, to un-person someone who might be deemed to be too Western influenced. However, doing some web searching just came up with rather similar biographical details, I also found that the Satrap Philharmonic Orchestra which Keyvan Yahya claimed to have founded had had its wikipedia page removed (the same day) with a note suggesting that it (the orchestra) might not exist.
I emailed the owner of On an Overgrown Path who blogs as 'Pliable' and he was similarly mystified. He's contacted the composer Jeff Harrington whose work was meant to have been performed who has had no feedback on the performance. Mike Roberts, a Canadian composer was also promised a performance by Keyvan Yahya, I'm still trying to find out whether anything has happened there.

I realise contacts betwwen Iran and the outside world due to the political situation have been a little problematic in the last few months but the situation is far from clear.

There's been a blog entry More questions than Answers at 'On an Overgrown Path' supplying more musical background than I can supply - I'd recommend a read there on foreign contacts who may not deliver what they promise! The Keyvan Yahya material comes about half way down that item. So if anyone knows of documented performances or mathematical papers by Keyvan Yahya, I'd be very interested!


(amarok's random play came up with the Parsi/English Sorabji's The Perfumed Garden - whilst I was composing this post, now there's an interesting coincidence!)

Sunday, May 25, 2008

Deconstructing the deconstructors

There's a pretty good example of why the global warming nay-sayers are indulging in either fooling themselves, or their readers, on the RealCimate website here. Needs some careful reading, though those who want to take the easy option and don't want to bother their heads about science will no doubt cling to the option that doesn't challenge their comfort zone.
Pointed to it by Elizaphanian.

Tuesday, December 11, 2007

A familiar corner

After noticing an update of a facebook friend, I see that Tom Körner has his own facebook fan club - which I can't join as I don't have the right email address...he was my director of studies 30+ years ago at Cambridge - don't think I was very good though I've been making up for it by doing lots of numerical analysis type applications over the past 15 years. I read his 'The Pleasures of Counting' (quite) a few years ago and I must see about giving it a re-read (so it is recommended, by me anyway!). His web page - on the other hand - I don't think it has changed since I first saw it back in the late 1990's!
There appears to be a more recent book`Why Was The Computer Invented When It Was?' - well more recent than the web-page..2002