A distinctive (I hope) way to mark the occasion of my 41st birthday.
Today is my birthday, which is the last part of the title explained, so where does the word “Eulerian” come in?
THE MOST PROLIFIC OF ALL MATHEMATICIANS
For all his immense output Leonhard Euler (pronouned “Oiler”, not “Ewe-ler”) is best known to the world at large for his solution to the “Bridges of Konigsberg” conundrum. Citizens of this then German town (it is now Kaliningrad, Russia) used to amuse themselves by trying to walk around the town crossing each of its seven bridges once and once only in the course of their peregrinations. Nobody ever managed it, and Euler (pioneering the science of topology, a minor offshoot of which is the “Beck Map”, versions of which are now used worldwide as an easy way to display urban public transport routes, in the process) proved that there was no way to do this. This is because each the four landmasses involved contained an odd number of bridgeheads – had specifically two (and it could have been any two), or all four of these landmasses contained even numbers of bridgeheads it would have been possible to devise a walking route using each bridge precisely once.
Much less well known than the above, Euler also noticed that if you feed values into the equation Y = X2 + X + 41 every value of X from 0 through to 39 produces a prime number for Y, and even after the inevitable break to the sequence where X = 40 produces Y = 1681 = 41 * 41, and X = 41 produces Y = 1763 = 41 * 43, the formula continues to produce a very large number of prime numbers – far more than any other formula of similar type. This then is why I described this an Eulerian birthday – it is my 41st. A clue to bear in mind for next year’s birthday is that the person who will play the role in my blog post on that day that Euler has played today was proud of the fact that he was born in Cambridge in 1953 and had initials DNA. More details, including a full listing of the primes produced before X = 40, can be found in Keith Devlin’s “Mathematics: A New Golden Age”.
I have some pictures, mainly from today at work. These are presented as a ’tiled mosaic’ – click an individual image to view at full size.
From here to the Watt medallion are tokens that I scanned at high resolution and worked on to produce the clearest possible images.
These last few pics are not work pics – they are the best images I have managed to get of the James Watt medallion I bought recently.
Many people on both facebook and twitter have wished my a happy birthday and I thank all of you for so doing – the main celebration, a Sunday lunch at the Crown in East Rudham two days before the actual day was superb.
Wise words from Anna – King’s Lynn politicians take note!
I don’t get why the politicians in my municipality Trosa keeps erase our forests. They think building houses is top priority. They don’t care for the climate changes at all. They keep b…
Source: I love trees, do you?
An account of recent events at James and Sons.
Yesterday was James and Sons’ May auction, at Fakenham Racecourse, and today we had a badge sale at our shop in Fakenham.
Our main auction was blighted by problems with the internet connection at the venue. Eventually we relocated the auction itself to Cool Roxy, the owners and trainers bar, while leaving the stock in the Prince of Wales Suite. This left us way behind schedule. Nevertheless, the sale was very successful, with five pieces of postcard artwork accompanied by sample postcards by a man called Twelvetrees selling phenomenally well, some old vinyl records selling well (a Black Sabbath recording went for £340), and many other items faring well. Among the lesser lights a book of photographs from King’s Lynn’s past went for just £4 (it goes well with my substantial digital archive of pictures from King’s Lynn’s present thank you), while a Cornwall Polytechnic Society medallion featuring a bust of James Watt (he after whom the unit of power is named, and who along with his distant predecessor Heron of Alexandria, his closer predecessor Thomas Newcomen and his near contemporary Richard Trevithick played a key role in the development of the steam engine, the first power source for locomotives) went for £11. In amongst all this I had to get images of the reverse sides of the some of the badges being sold today to resolve queries.
Overall, the early problems not withstanding it was a successful day, and here are some photos…
These helmet plates all did well
The model aerolplane was another success
The model soldiers (of which we had vast numbers in various lots) also went down well.
These mounted soldiers were one lot
The Twelvetrees artwork and sample postcards referred to in the text.
This map piqued my interest but was beyond my means.
This barometer has seen almost as many auctions as I have, but this time it found a buyer.
Had this been being sold individually instead of as part of a much larger lot I would have been interested.
A plastic case full of fishing flies, of which this is just a sample, sold.
The medallion referred to in the text.
Today’s sale proceeded smoothly. Although no huge prices were recorded a number of items did better than expected. Overall therefore I think we can say it was a successful week, although very draining (especially yesterday).
SPERGY IS HERE!!
The creation of my friend and fellow NAS West Norfolk committee member Callum Brazzo, Spergy is online resource created specifically for the use of autistic people. I urge you to visit it using the link below and register asap, as I have:
I am delighted to share this, not having had access to a full-size screen since Friday.
Wise words as usual from Richard Murphy on fair taxation.
Source: What I expect from any party on fair taxation: my talk this morning
Details of four significant press releases that I have put out recently.
This post covers one particular qaspect of my work at James and Sons. Everything yousee has gone out between Thursday of last week and this morning.
I am sharing four of these with you:
MILITARY BADGE AUCTION ALERT
This one is about our upcoming auctions on Wednesday and Thursday, the first of which contains a few military badges, including both of those used in the image, and the second of which, taking place at our own premises, is a pure badge auction. I will provide the images, a jpg of the full document and a link to the original word document:
MILITARY BADGE AUCTION ALERT
THE GREAT CENTENARY CHARITY AUCTION
For various reasons instead of a dedicated auction devoted entirely to fund-raising we are incorporating the Great Centenary Charity Auction within our own programme, with lots in June and November being sold for fund-raising purposes. I have put out two press releases thus far about this:
WHERE MILITARIA AND SCOUTING COMBINE
The first press release focuses on a collection of medals and paperwork relating to Jack Cornwell, who at the battle of Jutland became the youngest person ever to win the VC. He was also a boy scout, giving an extra connection. I have a jpg of the press release, the press release itself and all the images I took of the various items:
GREAT CENTENARY CHARITY AUCTION
POPPIES AT THE TOWER
The second Great Centenary Charity Auction press release is about an oil painting of the Poppies at the Tower by one of the two artists who created the real thing…
POPPIES AT THE TOWER
COIN AUCTION ALERT
This was chronologically the first of the press releases to go out, focussing on this Wednesday’s auction:
COIN AUCTION ALERT
This post comes from The Art of Autism, altough on this occasion I am keeping comments open here. It is a superb explanation of life on the spectrum.
This wonderful post from The Art of Autsim can be viewed in its original niche by clicking here. I have also reproduced it below:
Although I do not usually do so when sharing other people’s work I am on this occasion keeping comments open here.