Tuesday 29 December 2009

Nicholas Winton


I was present at a gathering in celebration of  Nicholas Winton's hundredth birthday at the Chabad House in Oxford. I won't tell the story of Nicholas Winton here. It is well known and there is a link above to the Wikipedia entry about him. It was remarkable to see someone of his age who was so articulate and able to interact easily with his  audience. But astonishingly the most interesting thing about him was his ordinariness.
An ordinary man who achieved the extraordinary. Here was someone who at a a time when others were were wringing their hands in despair just acted and saved the lives of  669 children! How did he do it?
To quote him:  "If in 1938 I had taken the advice of most of the people who were seeing exactly the same as what I was seeing in Czechoslovakia. There were limits to the number of families that could move and that meant that the children also couldn’t move. Could the children be moved without the families? Everybody knew that it was a problem. Everybody I talked to was quite certain it’s hopeless - you won’t ever be able to get the permission to do that, but nobody had asked." 
So he asked the British Foreign Office and gained the permissions!
The moral was he said "Above all, believe that nothing is impossible. If it is not impossible there must be a way of doing it. Don’t be content to think what other people say that you can’t do it."

He also expressed it in this way. "If it's not impossible then it's possible. So do it."
Such a simple idea but what leverage it provided.
Of course there may always be incredulity at the disparity between man and his achievements but to witness it as I did when one of the elderly kindertransport children said to to him "thank you father"  enabled me to feel the magnitude of his achievement. 

Saturday 24 October 2009

Why did I wait so long?

Why did I wait so long before getting to know the Bodleian?

Well, I used to have a card for the Taylorian library which I utilised for their Yiddish collection but when I came to renew it recently I was told that it had been taken under the wing of OULS (Oxford University Library Services) and I should now replace my Taylorian card with a Bodleian card.
The number of libraries  made available by the Bodleian readers card was a big surprise. And the upper reading room is absolutely stunning!

I have always wanted to go into the Radcliffe Camera so I expect that it will be one the first buildings I visit on my exploratory tour.

Thursday 22 October 2009

CEIIINOSSSTTUV



CEIIINOSSSTTUV- Hooke's Law (more commonly expressed as  F = -kx) as I learned in this year's annual Charles Simonyi Lecture delivered by Timothy Gowers! (Incidentally Timothy Gowers claimed that he was the first mathematician to  deliver a Simonyi lecture.) The subject of his lecture was Open Source Mathematics and CEIIINOSSSTTUV was his example for Closed Source Mathematics! He explained that when Robert Hooke, who appears in the picture, had formulated his Law he did not want to  make it public immediately. 
But, wanting to lay a claim to the intellectual copyright before anyone else did, he created the anagram CEIIINOSSSTTUV  - Ut tensio, sic vis (as the extension, so the force) which he would be able to use were the primacy of his work to be disputed!

The thrust of Gowers's lecture was that the Web can now transform mathematical research from being a private cerebral activity to a collaborative activity of many minds. He described this in action working on the density Hales-Jewett theorem (DHJ). He led into the mathematics very gently starting with noughts and crosses so that anyone could follow. But   what struck me personally, not being a mathematician, over and above the efficacy of the collaborative method, were the following effects.

The first was the ethical effect, both personal and social, of this way of working, and the second the illuminating effect both  for the future researcher and for the historian of mathematics.

He began by discussing the concept of CREDIT.
He said that in order to obtain the credit for an intellectual achievement considerable importance was attached to finding the first correct solution and so work was carried out privately.
Striking examples of the above were the example of Robert Hooke quoted above, 
and more recently of Andrew Wiles (famous for proving Fermat's Last Theorem) who worked in secret for seven years, before announcing his solution at a conference in Cambridge.
Moreover the theorem when presented publicly in its polished form gave no insight into the thoughts, and the many paths that led nowhere on the way on the way to the solution. He considered that an account of the many tergiversations was extremely valuable for other researchers working in similar fields.

This was he claims the first time the full working record of the solution of a hard mathematical research problem has been made available. 
He published his work under the name of Polymath1 and not as by a single person or several people. Evaluation of the work for CREDIT could be carried out by referring to the blog accompanying the article which documented  everybody's contributions, whether fruitful or otherwise.

From the notes which he kindly sent  to me:
At the moment, if you have a good idea in connection with an unsolved problem, there is a strong incentive not to share it (unless you have completely solved the problem).
But what if a problem was tackled by many people, all collaborating, and working \out in the open"? The incentive structure completely changes:
now one should share one's ideas as quickly as possible.
February 1st: project launched. Proof outline suggested, modelled on proof of a related result.
February 6th: already 200 comments and well over a thousand \lurkers".
February 8th (approx): first idea emerged that clearly represented a signicant advance in understanding of the problem.
February 9th: technical simplication proposed that made calculations much easier.
February 12th: wiki set up as somewhere to put background material and more detailed explanations of ideas that arose in the blog discussion.
February 21st: dierent proof outline suggested, modelled on a dierent proof
 of the related result.

February 25th: major lemma proved, analogous to major step of proof of the related result.
February 28th: second major lemma proved.
March 6th: serious diculty emerges.
March 8th: proof of related result modied to make it an easier model to use.
March 9th: complete sketch of a solution to the problem written.
Solution generalizes straightforwardly to proof of the full DHJ theorem and not just the special case we started out trying to solve.

Tuesday 15 September 2009

Open Doors Day










Last weekend was Heritage Day Open Doors. Doors usually closed
are briefly opened. In Oxford this mainly means the college gates. In addition there are guided tours over and above those which are normally available to the visiting public.
For me this was not only Open Doors but Open Eyes. For many years I had been sitting at a PC in a room overlooking the 001 Taxi office. Little did I know that I was looking at in part possibly the oldest mediaeval building in Oxford and that the true name of the lane was not New Inn Yard but Kepeharm’s Lane! This I learned on Victoria Azaz’s excellent tour of Oxford's Jewish mediaeval Heritage. And as much of what is popularly known rests on the work of the Oxford historian Cecil Roth I have headed the blog with a sketch of him on the website. The map below is taken from his book ‘The Jews of medieval Oxford’.




There is also newer map, the work of Pam Manix.
To coincide with Open Doors Day the Oxford Jewish Community has launched its excellent website containing a wealth of information and valuable links to resources.
Being ‘town’ and not 'gown', entering the college gates is as if entering a parallel universe. From the extension and din of the street to the quiet enfolding quadrangle shocks the spirit into a surprised tranquillity.
Another surprise was the Reredos in All Souls Chapel , so massive, covering the entire wall. I was taken unawares.

On the 'town' side I heard an interesting lecture by Mark Davies in the Bangkok House about 'The Boatmen's Floating Chapel' . (The Bangkok House was itself a chapel for a while replacing the 'Floating Chapel' in the 1860s.)
From Wikipedia: John Jones's most unusual innovation was a houseboat – the "Boatman's Floating Chapel" – acquired in 1839, for use as a chapel serving the families working on the river and the canals. This boat was St Thomas' first chapel of ease; it was donated by H. Ward, a local coal merchant, and used until it sank in 1868. It was replaced by a chapel dedicated to St Nicholas, which remained in use until 1892.

Tuesday 16 June 2009

Chrome



My son suggested that I try using Google's new browser called Chrome. He found it very fast. I have not long moved over from Internet Explorer to Firefox, and now he wants me to try yet another browser! I suppose though that I ought to. The browser is probably the most heavily used piece of software on the computer, so that improvements here are very significant.

I have only just downloaded it and my first impression is that its GUI is very different to that of Internet Explorer or Firefox, and it will take me quite a while to get used to it! The most striking and immediately noticed difference is the appearance of the empty Chrome window. It is extremely uncluttered and gives an impression of simplicity just like the traditional google.com search page - just one box to enter your data. And, what is new is that the data can be the sort of data that you would put into a search box or the sort of data that you would put into a browser address bar. Chrome guesses what you want as you type, and as most requests are repetitions of requests previously made, it guesses right pretty quickly.

The second thing noticed almost immediately is that when you request a new tab, the tabbed window opens with thumbnails of the most recently visited pages and with bookmarks rather than being empty. So you don't need to go to history or bookmarks to find the page you want. However, despite the deceptive simplicity of Chrome's GUI I now have to get down to actually learning how to use it!

There are a number of videos which describe various interesting features about Chrome. There is also a long introductory video giving the background to the development of Chrome and explaining the technology behind the scene. Most impressive is the multi process structure of Chrome making each tabbed window a separate process so that if one locks up the others are not affected. This would appear to be my most immediate benefit.

Thursday 11 June 2009

Developing with Joomla!


I have recently thought of using Joomla! to develop web sites. However, I find it very very unintuitive. It's obviously quite different to the conventional way of creating web sites. I particularly find the concept of 'position' difficult. And yet it appears to be very popular!

ex nihilo nil fit?




Yesterday I heard a presentation at the Chabad house in Oxford from the CEO of the Airwater corporation. I found it of such interest that I cannot resist the impulse to blog about it! You plug the machine into a power source and lo and behold you've got pure drinking water. The machines scale up from household units which can replace the home water fountain to devices which provide water for a whole village community or a disaster site! The power source can be electric or wind. Continuous development is driving down the power requirements.

Regular Expression

Some time ago I found a regular expression to factorize a number. The beauty of it was that it got the job done with the need for any arithmetic. At the time I thought I had understood i.e. internalized it. But alas I can't retrieve it.

Isaiah Berlin's centenary

On the occasion of the centenary of Isaiah Berlin's birth a variety of functions are being held around the world. Here are several useful links:
Isaiah Berlin Virtual Library;
Henry Hardy's web site ;
Isaiah Berlin in Riga

Isaiah Berlin is an iconic figure yet many find it difficult to see why he is so greatly esteemed and what are his essential contributions to our understanding of man's estate. It is so often said that he did not write THE BOOK as was anticipated.

H. Hardy writes: "When Isaiah Berlin was awarded the Order of Merit, Maurice Bowra wrote in a letter to Noel Annan: ‘I am delighted about Isaiah. He is much better than all alternatives ... and very much deserves it. Though like Our Lord and Socrates he does not publish much, he thinks and says a great deal and has had an enormous influence on our times’."

The various films and lectures do cast light on him both as a person and as a thinker. The films show him against his personal political background - pogroms - the Russian revolution - a schoolboy at St Pauls - All Souls in the thirties - the Oxford philosphers- Zionism - the USA for the Foreign Office...

Of the articles about his thought those by Henry Hardy are particularly pellucid. Henry Hardy is the literary executor of Isaiah Berlin. Introducing himself Hardy writes in the article on Isaiah Berlins Four Essays on Liberty.
"I had no idea when I joined Oxford’s Wolfson College as a graduate student in 1972 that I was about to discover not only one of the principal sources of my liberation ..., but also my eventual occupation. The College’s President was Isaiah Berlin. It was clear as soon as I met him (at a scholarship interview for which I arrived late after a car accident, and during which he repeatedly went to the window to see if a taxi had arrived) that he was a remarkable man; but I had never read any of his work, and knew next to nothing about him.
I asked where I should start, and was rightly directed to Four Essays on Liberty, published three years earlier. I took it with me on a visit to a remote Exmoor cottage during a vacation, and was transfixed. Berlin likes to refer to the unmistakable sensation of ‘sailing in first-class waters’, and this was the sensation I experienced. Quite apart from the persuasiveness of the propositions contained in the book, here was obviously a man of rare insight into human nature, a man plentifully endowed with that ‘sense of reality’ that he welcomes when he finds it in others. There was room for disagreement on this or that point, but on the large issues – one felt in safe hands."
Hardy also writes: "The working view I have arrived at is very much a view from the inside, in the sense that it is not in general informed by a full awareness of the contributions of predecessors (including those about whom Berlin writes) or contemporaries, and to that degree it cannot be offered as a balanced, contextualised account: despite philosophical qualifications my life has not been spent in philosophical teaching or research, so that I am by no means an expert. Nevertheless, there is a sense in which it is worth having a perspective uncontaminated by preconceptions derived from elsewhere: such a perspective is a luxury not easily available to professionals in Berlin’s fields of activity, and it may from time to time allow insights that might escape the better-informed, rather as children sometimes ask philosophical questions that adults have forgotten to be puzzled by.

There is another charge which may be levelled against what I say. I admit to a strong taste for simplification and generalisation: indeed the latter, at least, seems to me one of the main motors of philosophical investigation."

For an example of clear writing on a philosophical topic see his Isaiah Berlin's key idea.

On a non-philosophical topic here is part of an introduction to the Isaiah Berlin film delivered by Hardy at the Oxford synagogue.

"The first woman Isaiah Berlin fell properly in love with was Lady Patricia de Bendern. She was a married woman, like all his other leading ladies. I wonder if this trend was significant. She was a Lady not by marriage but by birth, having been born Lady Patricia Douglas, the daughter of the 11th Marquess of Queensberry, and therefore great-niece of Lord Alfred Douglas, the object of Oscar Wilde’s ill-starred affections. Berlin’s best friend, Stuart Hampshire, thought Isaiah and Patricia an ill-assorted couple. Berlin was so very Jewish; indeed, he used to say that he saw himself, at that stage of his life, as an ugly, short, fat, swarthy Jew who could not possibly be attractive to women. The beautiful, petite Patricia, on the other hand, was, in Hampshire’s excellent phrase, ‘super-goyissimo’. Nothing physical occurred between them, but Berlin was besotted with her for years, and dedicated to her, with feeling, his 1950 translation of Turgenev’s novella First Love.....

Herbert Hart, the famous Jewish Professor of Jurisprudence here at Oxford, called Berlin ‘King of the Jews’. Christians in particular might regard this soubriquet, surely used slightly tongue-in-cheek, as a case of lèse-majesté. But it captures well an important truth about Berlin: that many Jews certainly, and surely many non-Jews too, regarded him as some kind of exemplar of what a Jew could be – what a man could be, too, but especially a Jewish man. There was no Jew more widely loved and respected than he.

... perhaps it is worth making explicit beforehand something that may not be well known to every member of this audience. This is that Berlin was both deeply aware and unquestioningly accepting of his Jewishness. In his own words: ‘my Jewish roots […] are so deep, so native to me, that it is idle for me to try to identify them, let alone analyse them’. And in a contribution to a symposium on the question ‘Why be Jewish?’, published in The UJS Haggadah the year before he died, and drawn to my attention by Peter Oppenheimer, he expressed a similar thought more fully:

I am quite incapable of writing even a short passage on what being Jewish means to me. All that I think is that I am a Jew, in exactly the sense in which I have two legs, arms, eyes etc. – it is just an attribute, which I take for granted as belonging to me, part of the minimum description of me as a person. I am neither proud of it nor embarrassed by it – I just am a Jew, and it never occurred to me that I could be anything else. The question ‘Why be Jewish?’ is something that I cannot answer any more than ‘Why be alive?’ or ‘Why be two-legged?’

And finally, again from Henry Hardy, a sentence or two for our cultural policy makers in the UK.

"In an age of multiculturalism – that is, the simultaneous presence of many cultures in one geopolitical unit (which may be the whole world, if we allow for the cultural globalisation induced by travel and the media) – what are we to say about the effect on cultural identity of the resulting admixture of cultural elements? Berlin believed that the dominant culture should be protected from too much infiltration and alteration by minority cultures, lest it forfeit too much of the character that gives it strength and confidence; enthusiastic multiculturalists may disagree.
"

At a more technical level there was a discussion at All Souls of IB's concepts of liberty. The panellists were leading philosophers who have interested themselves in IB's work. However, the conversational exchanges were difficult for non-professionals.



I have just read a wonderful piece about IB by Michael Johnson. I cannot resist quoting this snippet! "As Isaiah talks I realise more pertinently than I have ever done before, although it’s always been on the edge of my mind, that one is in the presence of genius – that strange word. What does it mean? From my point of view, it means that I am listening to a man who deals with ideas as a painter deals with colours, as a musician deals with instruments and sounds. His pitch is perfect; there is not one instance I can disagree with, frown over, or shout disorder. You see for me he is original because he has painted portraits of both men and ideas which are three dimensional and which speak as a voice speaks to you across the room."


On the occasion of the IB celebration in Jerusalem here's an article about IB from the Independent