Posts Tagged: apple

  • web

    Snow leopard + wordpress + latex problem

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    Ever since I’ve upgraded to Snow Leopard I’ve been having problems with the webserver. At first there were the ‘obvious’ problems : mysql-connection lost and php-error message. These were swiftly dealt with using the excellent Snow Leopard, Apache, PHP, MySQL and WordPress! advice from ‘tady’. Right now, access to this blog is extremely slow (and… Read more »

  • games, groups

    sporadic simple games

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    About a year ago I did a series of posts on games associated to the Mathieu sporadic group $M_{12} $, starting with a post on Conway’s puzzle M(13), and, continuing with a discussion of mathematical blackjack. The idea at the time was to write a book for a general audience, as discussed at the start… Read more »

  • stories

    censured post : bloggers’ block

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    Below an up-till-now hidden post, written november last year, trying to explain the long blog-silence at neverendingbooks during october-november 2007… A couple of months ago a publisher approached me, out of the blue, to consider writing a book about mathematics for the general audience (in Dutch (?!)). Okay, I brought this on myself hinting at… Read more »

  • web

    quick iTouch links

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    MacBookAir? Is this really the best Apple could come up with? A laptop you can slide under the door or put in an envelop? Yeez… Probably the hot-air-book is about as thick as an iTouch. The first thing I did was to buy a leather case to protect the vulnerable thing, making it as thick… Read more »

  • web

    top iTouch hacks

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    So, you did jailbreak your iTouch and did install some fun or useful stuff via the Install.app … but then, suddenly, the next program on your wish-list fails to install ??!! I know you hate to do drastic things to your iTouch, but sooner or later you’ll have to do it, so why not NOW?… Read more »

  • web

    first things first : jailbreak

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    You may have surmised it from reading this post : Santa brought me an iPod Touch! (( or rather : Santa brought PD2 an iTouch and knowing his jealous nature ordered one for him as well… )) Ive used an iPodClassic to transfer huge files between home (MacBook) and office (iMac) as well as for… Read more »

  • web

    NeB on Leopard and iPhone

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    If you have an iPhone or iPod Touch and point your Safari browser to this blog you can now view it in optimised format, thanks to the iWPhone WordPress Plugin and Theme. I’ve only changed the CSS slightly to have the same greeny look-and-feel of the current redoable theme. Upgrading a WordPress-blog running under Tiger… Read more »

  • stories

    problema bovinum

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    Suppose for a moment that some librarian at the Bodleian Library announces that (s)he discovered an old encrypted book attributed to Isaac Newton. After a few months of failed attempts, the code is finally cracked and turns out to use a Public Key system based on the product of two gigantic prime numbers, $2^{32582657}-1 $… Read more »

  • featured

    The Mathieu groupoid (1)

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    Conway’s puzzle M(13) is a variation on the 15-puzzle played with the 13 points in the projective plane $\mathbb{P}^2(\mathbb{F}_3) $. The desired position is given on the left where all the counters are placed at at the points having that label (the point corresponding to the hole in the drawing has label 0). A typical… Read more »

  • featured

    Conway’s puzzle M(13)

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    In the series “Mathieu games” we describe some mathematical games and puzzles connected to simple groups. We will encounter Conway’s M(13)-puzzle, the classic Loyd’s 15-puzzle and mathematical blackjack based on Mathieu’s sporadic simple group M(12).

  • featured

    the cartographers’ groups (2)

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    Fortunately, there is a drastic shortcut to the general tree-argument of last time, due to Roger Alperin. Recall that the Moebius transformations corresponding to u resp. v send z resp. to $-\frac{1}{z} $ and $\frac{1}{1-z} $ whence the Moebius transformation corresponding to $v^{-1} $ send z to $1-\frac{1}{z} $. Consider the set $\mathcal{P} $ of… Read more »

  • web

    bookmarks tuesday cleanup

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    Geeky Mom : Why am I blogging?. Been there before. Sooner or later all non-pseudonomenous bloggers are faced with the same dilemmas. There’s really no answer or advice to give except : blog when you feel like it, if not do something different, after all its just one of those billion of blogs around. Texmaker… Read more »

  • web

    hold on to those PPC macs

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    On my return from O a brand new 15inch MacBook Pro lie waiting in my office. By that evening I had wrecked the system to the extend that I could no longer login and had to reinstall from scratch… I was about to trow it away but tried it out for a few more days… Read more »

  • stories

    the Oxford murders

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    Set in the spring and summer of 1993, the Oxford Murders by Guillermo Martinez is a crime-story about a series of murders commited in Oxford. At a certain moment one even conjectures that the next victim will be Andrew Wiles on the eve of delivering his extra two talks at a Cambridge seminar and that… Read more »

  • web

    balm or poison

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    Don’t try to follow the previous post unless you want to end up in a neverending (sic!) series of re-installs, unrecognized harddisks at start-up and a few kernel-panics! At this moment I know of NO safe way to use Carbon Copy Cloner to make a bootable clone of my HD. Here is the only way… Read more »

  • web

    tiger days 1

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    It should be really day 2 but yesterday evening I was a bit overoptimistic and tried to get MySQL, Ruby, Rails & Tracks installed and in the process totally wrecked my Ruby-system (and probably a few things more). Besides, I found out that the _Carbon Copy Cloner_ work-around doesn\’t really work (that is, one canNOT… Read more »

  • web

    tiger balm

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    I still havent received my Tiger-package but got a bit panicky because it is released as a DVD and at least one of our recent iMacs (the older ones do not even have build in firewire, let alone enough RAM) cannot read DVDs. That’s not a major problem as one can always send the DVD… Read more »

  • stories

    nostalgia

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    Unlike the cooler people out there, I haven’t received my _pre-ordered_ copy (via AppleStore) of Tiger yet. Partly my own fault because I couldn’t resist the temptation to bundle up with a personalized iPod Photo! The good news is that it buys me more time to follow the housecleaning tips. First, my idea was to… Read more »

  • web

    GMD

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    I’m always extremely slow to pick up a trend (let alone a hype), in mathematics as well as in real life. It took me over a year to know of the existence of _blogs_ and to realize that they were a much easier way to maintain a webpage than manually modifying HTML-pages. But, eventually I… Read more »

  • web

    home jukebox

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    I am trying to put all our music onto one old iMac to make a HomeJukeBox but ran into an annoying problem. I discovered a pile of 70 Audio-CDs which PD1 ripped away from home (and more importantly, away from internet-access) so if you feed them to iTunes they only display Track01, Track02 etc. that… Read more »

  • stories

    Jacobian update

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    One way to increase the blogshare-value of this site might be to give readers more of what they want. In fact, there is an excellent guide for those who really want to increase traffic on their site called 26 Steps to 15k a Day. A somewhat sobering suggestion is rule S : “Think about what… Read more »

  • web

    tweedledee and tweedledum

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    Tweedledum is a first-generation iMac (233 MHz slot-loading, 192Mb RAM, No Airport) whereas Tweedledee is 2nd-generation (350 MHz front-loading, 192Mb RAM, Airport card). A couple of weeks ago I replaced their original hard-discs (4 Gb resp. 6 Gb) by fat 120 Gb discs and from this weekend they serve as our backup-facility. Tweedledee is connected… Read more »

  • web

    the iTunes hack

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    If you are interested in getting thousands of mp3-files on your computer using only 128 Kb of ROM, read on! Yesterday I made my hands dirty and with Jan’s help upgraded two 6 Gb colored iMacs (a blue and a pink one) to potential servers for our home-network having a 80 Gb resp. a 120… Read more »

  • web

    bandwidth measures

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    One day (hopefully) lots of MP3, JPEG and perhaps even MPEG-files will be flying around our wireless home-network. But I didn’t have any idea of how much data I could cram through the Airport-connections. To estimate the available bandwith of a network there is a nice free tool around, iperf of which you can download… Read more »

  • stories

    the cpu 2 generation

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    Never ever tell an ICT-aware person that you want to try to set up a home-network before you understand all 65536 port-numbers and their corresponding protocols. Here is what happened to me this week. Jan Adriaenssens returned from an extended vacation in New Zealand and I told him about my problems with trying to set… Read more »