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Define the Ramsey number $ R(k,m)$ to be the minimum number $ n$ of vertices required of the complete graph $ K_n$ so that for any two-coloring (red, blue) of the edges of $ K_n$ one of two things will happen: There is a red $ k$-clique; that is, a complete subgraph of $ k$ vertices for which all edges are red. There is a blue $ m$-clique. It is known that these numbers are always finite, but it is very difficult to compute them exactly.
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Define the Ramsey number $ R(k,m)$ to be the minimum number $ n$ of vertices required of the complete graph $ K_n$ so that for any two-coloring (red, blue) of the edges of $ K_n$ one of two things will happen: There is a red $ k$-clique; that is, a complete subgraph of $ k$ vertices for which all edges are red. There is a blue $ m$-clique. It is known that these numbers are always finite, but it is very difficult to compute them exactly.
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Define the Ramsey number $ R(k,m)$ to be the minimum number $ n$ of vertices required of the complete graph $ K_n$ so that for any two-coloring (red, blue) of the edges of $ K_n$ one of two things will happen: There is a red $ k$-clique; that is, a complete subgraph of $ k$ vertices for which all edges are red. There is a blue $ m$-clique. It is known that these numbers are always finite, but it is very difficult to compute them exactly.
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In the past, education was assessment based - you sat a class, wrote down notes, memorized those notes, and wrote a test based on those notes. The focus was on following this generic structure, and not necessarily on understanding the material or building knowledge in additional areas. Of course, some kids would understand many of these topics in good depth and be able to relate them to other topics easily - they were labelled the “smart..
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In the past, education was assessment based - you sat a class, wrote down notes, memorized those notes, and wrote a test based on those notes. The focus was on following this generic structure, and not necessarily on understanding the material or building knowledge in additional areas. Of course, some kids would understand many of these topics in good depth and be able to relate them to other topics easily - they were labelled the “smart..
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My old laptop finally seemed to be on its last legs, so I began shopping. I’m the kind of guy who will do research for a month before spending $100 on a hand-held vacuum cleaner, so you can imagine how I deal with something having three or more zeros in its price tag. I started using Debian when I was just a kid, and moved to Ubuntu a few years later.
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I’m increasingly encountering users on Heroku that are encountering the need to [shard]( http://en.wikipedia.org/wiki/Shard_(database_architecture )) their data. For most users this is something you delay as long as possible as you can generally go for sometime before you have to worry about it. Additionally scaling up your database is often a reasonable approach early on and something I encourage as a starting point as scaling up is easy....
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I’m increasingly encountering users on Heroku that are encountering the need to [shard]( http://en.wikipedia.org/wiki/Shard_(database_architecture )) their data. For most users this is something you delay as long as possible as you can generally go for sometime before you have to worry about it. Additionally scaling up your database is often a reasonable approach early on and something I encourage as a starting point as scaling up is easy....
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Create.js and VIE were recently added to the core of Drupal 8 . Just like with TYPO3 Neos , I’ll write a longer post on how things went later. The German PHPmagazin was already fast enough to interview me on that at VIE und Create.js: Warum In-place Editing so erfolgreich ist . While there were many interesting CMSs already using Create – including OpenCms , Symfony CMF , Midgard , and Neos – I can understand why the inte....
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I like Vim and I like using ‘J’ and ‘K’ to scroll text down and up. I know about Vimperator/Vimium, but they seem too powerful to me. That’s why I started my NIH browser extension. At the moment, Firefox and Chrome are supported. Here are the sources. Any advice or comments are welcome!
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I like Vim and I like using ‘J’ and ‘K’ to scroll text down and up. I know about Vimperator/Vimium, but they seem too powerful to me. That’s why I started my NIH browser extension. At the moment, Firefox and Chrome are supported. Here are the sources. Any advice or comments are welcome!
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Create.js and VIE were recently added to the core of Drupal 8 . Just like with TYPO3 Neos , I’ll write a longer post on how things went later. The German PHPmagazin was already fast enough to interview me on that at VIE und Create.js: Warum In-place Editing so erfolgreich ist . While there were many interesting CMSs already using Create – including OpenCms , Symfony CMF , Midgard , and Neos – I can understand why the inte....
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Hurricane in the Cloud: How Hurricane Sandy Impacted Web Hosting Companies
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kevinohashi.com
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13 years ago
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eng
I just wanted to share the newest blog post, titled Hurricane in the Cloud: How Hurricane Sandy Impacted Web Hosting Companies , on the Review Signal blog
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Hurricane in the Cloud: How Hurricane Sandy Impacted Web Hosting Companies
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kevinohashi.com
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13 years ago
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eng
I just wanted to share the newest blog post, titled Hurricane in the Cloud: How Hurricane Sandy Impacted Web Hosting Companies , on the Review Signal blog
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Thanks to the magic that is Instapaper, I was able to reference the original text of Josh Topolsky’s article Integrity and Bullies with Blogs rather than the updated version available on his Tumblr blog, although my efforts proved to be for naught when I found the only difference between the two version to be the removal of a single sentence in the opening paragraph. Despite this I do not regret spending the extra ten minutes it took to....
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When Marco Arment released The Magazine in early October, the announcement attracted the attention of many prominent internet writers , all of which spoke very enthusiastically about Marco’s magazine initiative. A biweekly publication released through iOS’s Newsstand, The Magazine featured articles from Guy English, Jason Snell, Alex Payne, and Michael Lopp in just the first issue . The second issue attracted work from John Si..
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Reverse Engineering Startup Press: How and Why TechCrunch Covered My Launch
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kevinohashi.com
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13 years ago
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eng
After my startup 's launch was covered by TechCrunch I was asked by a lot of people how it happened. People wanted copies of my pitch to learn from. It was as if I had discovered some arcane secret. But I didn't believe that. All I had done was read a couple blog posts from other startups with copies of their pitches (Thanks Jason L. Baptiste , Vinicius Vacanti , Leo Widrich ) and one journalist who shared his thoughts (Thanks Sean B....
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Reverse Engineering Startup Press: How and Why TechCrunch Covered My Launch
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kevinohashi.com
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13 years ago
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eng
After my startup 's launch was covered by TechCrunch I was asked by a lot of people how it happened. People wanted copies of my pitch to learn from. It was as if I had discovered some arcane secret. But I didn't believe that. All I had done was read a couple blog posts from other startups with copies of their pitches (Thanks Jason L. Baptiste , Vinicius Vacanti , Leo Widrich ) and one journalist who shared his thoughts (Thanks Sean B....
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Reverse Engineering Startup Press: How and Why TechCrunch Covered My Launch
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kevinohashi.com
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13 years ago
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eng
After my startup 's launch was covered by TechCrunch I was asked by a lot of people how it happened. People wanted copies of my pitch to learn from. It was as if I had discovered some arcane secret. But I didn't believe that. All I had done was read a couple blog posts from other startups with copies of their pitches (Thanks Jason L. Baptiste , Vinicius Vacanti , Leo Widrich ) and one journalist who shared his thoughts (Thanks Sean B....
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Reverse Engineering Startup Press: How and Why TechCrunch Covered My Launch
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kevinohashi.com
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13 years ago
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eng
After my startup 's launch was covered by TechCrunch I was asked by a lot of people how it happened. People wanted copies of my pitch to learn from. It was as if I had discovered some arcane secret. But I didn't believe that. All I had done was read a couple blog posts from other startups with copies of their pitches (Thanks Jason L. Baptiste , Vinicius Vacanti , Leo Widrich ) and one journalist who shared his thoughts (Thanks Sean B....
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visible close buttons on every firefox tab (including the last one)
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purpleidea.com
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13 years ago
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eng
After hacking around with a few firefox internals the other day , I decided there was another little annoyance that I had… When I’m acting insane and using my mouse to open and close tabs , the per tab close button disappears when there is only one tab left! This is apparently a feature , and while I can respect it as a default, it certainly isn’t an option for me. Thankfully, there are a lot of common minded individuals on the net, and t..
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visible close buttons on every firefox tab (including the last one)
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purpleidea.com
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13 years ago
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eng
After hacking around with a few firefox internals the other day , I decided there was another little annoyance that I had… When I’m acting insane and using my mouse to open and close tabs , the per tab close button disappears when there is only one tab left! This is apparently a feature , and while I can respect it as a default, it certainly isn’t an option for me. Thankfully, there are a lot of common minded individuals on the net, and t..
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In order to visually enhance my temperature logging I added some Javascript that computes sunrise and sunset for the 24h, 28h, weekly and monthly chart. Then I use this information to plot vertical bands on the chart indicating the effects of the sun on temperatures (and humidities): To add the bands to your Highchart just get the sunrise and sunset value for a particular day and push it on the xAxis.
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A couple of days ago I wrote about how to build a simple and non intrusive AJAX status with CoffeeScript in RubyOnRails .
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https://gacweb.icann.org/display/gacweb/GAC+Early+Warnings Some interesting reading ahead for people interested in internet policy and domain names. A couple fun stats: Country with the Most Objections: Australia (90) Most Objectionable gTLD: Africa (17 countries objected)
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Firefox has a “new tab” speed dial type page available. I use it as my homepage (hint, use: about:newtab) and find it very useful for launching my often used favourites. My one gripe is that it only shows you a default grid of 3 x 3. You can easily change that if you look in the secret preferences. Open a new tab and type in: about:config , accept the warning, and then search for: browser.newtabpage.rows and browser.newtabpage.colu..
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Firefox has a “new tab” speed dial type page available. I use it as my homepage (hint, use: about:newtab) and find it very useful for launching my often used favourites. My one gripe is that it only shows you a default grid of 3 x 3. You can easily change that if you look in the secret preferences. Open a new tab and type in: about:config , accept the warning, and then search for: browser.newtabpage.rows and browser.newtabpage.colu..
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Absolutely hilarious. I remember seeing a series of tweets to this effect last year around Christmas, but couldn’t find any of those tweets for this post given Twitter’s 3200 tweet archive limit . Truly unfortunate. Permalink.
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Hello planet puppet readers! Brice Figureau [1] who runs planet puppet has just syndicated my blog, so thanks go out to him. To all readers, I hope you enjoy my content, and please don’t be shy to comment and let me know if there are particular subjects or posts that I should elaborate on. I’ve got a whack of technical posts in the archives, so feel free to browse and let me know what’s good!
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Hello planet puppet readers! Brice Figureau [1] who runs planet puppet has just syndicated my blog, so thanks go out to him. To all readers, I hope you enjoy my content, and please don’t be shy to comment and let me know if there are particular subjects or posts that I should elaborate on. I’ve got a whack of technical posts in the archives, so feel free to browse and let me know what’s good!
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The controversial touchdown during the third quarter of this afternoon’s Houston-Detroit football game left me shaking my head for the rest of the day. Marc Sessler summed it up perfectly in his article Justin Forsett, Houston Texans gifted a touchdown : the Texans certainly were gifted a touchdown, and unfortunately that touchdown gave them the edge they needed to beat Detroit in overtime. Permalink.
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Mercurial loads a bunch of different configuration files and overlays their values on top of each other. The hgrc man page shows the order in which these files are loaded. I encountered an issue recently where I knew that hg was using an erroneous setting but I had no idea where the setting was coming from. The magic answer is hg --debug showconfig This will output all the current settings, along with the name of the file that it ..
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Lately Ive been getting questions about some of the applications I use. So, here is quick post on web applications I love, and that make my life easier.
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As I mentioned in We’re Live , I wrote a slick content management system designed to streamline the publication of my content to the web. Serving as a nod of acknowledgment to Marco Arment’s efforts in developing his very own CMS dubbed Second Crack, I call my system First Crack. In this post I will talk about why I chose to write my own content management system instead of using an existing engine — a topic that will stretch to encompass ..
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Lecture 1.5B: Business Models and Customer Development
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myownfortune.wordpress.com
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13 years ago
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eng
Despite sharing a name, 1.5B is a very different lecture from 1.5A. I’d say it talks mostly about how we think we know things but we don’t and how we can improve our guesses. There are many subjects covered quickly, so I’ll dive right in… Guesses According to Steve, when we first enter a new […]
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This week we had nettle tea. Unlike the other teas which have long, fancy, eloquent descriptions, this tea just plainly stated its ingredients. I.e. vitamin C, vitamin D, iron, magnesium etc.
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