CUNY Academic Commons | Hunter Johnson | Activity https://commons.gc.cuny.edu/members/hujohnson/activity/ Activity feed for Hunter Johnson. Sat, 01 Jan 2050 18:00:18 -0500 https://buddypress.org/?v= en 30 hourly 2 fdd8e53be6af2963c57c44e56d5b5b82 Hunter Johnson commented on the post, The Climate March Math, on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2014/09/24/the-climate-march-math/#comment-26077 Wed, 24 Sep 2014 16:56:11 -0400 I remember being asked open ended questions like this for the first time in an undergraduate “math modeling” class. In my case the question was: how many golf balls will fit in this room?

I loved thinking […]

]]> 42068cf4872a9a1b58e2b11161db296e Hunter Johnson commented on the post, Jewish Mathematicians in Germany, on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2013/08/12/jewish-mathematicians-in-germany/#comment-9814 Thu, 27 Feb 2014 20:04:04 -0500 Thank you for the correction. I was glossing the language of the exhibition — see the link for part 11 here: https://gj-math.uni-frankfurt.de/exhibition/

]]> 6a0b24b174d547590179ee095903b251 Hunter Johnson commented on the post, Is RSA Safe?, on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2013/08/26/is-rsa-safe/#comment-345 Thu, 05 Sep 2013 15:33:10 -0400 Dear Michael,

Thank you for these thoughtful corrections!

]]> f2d6104714a298a9a507b246eb38a0cf Hunter Johnson wrote a new post on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2013/08/26/is-rsa-safe/ Fri, 09 Aug 2013 13:47:19 -0400 ThumbnailThere has been some talk in the news recently that the security provided by the RSA encryption algorithm isn’t as secure as it used to be.

RSA is an acronym standing for Rivest, Shamir, and Adleman, the […]

]]> 4960e9b2ae1e1ac8f1378ba827302900 Hunter Johnson wrote a new post on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2013/08/12/jewish-mathematicians-in-germany/ Fri, 09 Aug 2013 13:46:36 -0400 A year or so ago I stumbled across Reuben Hersh’s “Under-represented Then Over-represented: A Memoir of Jews in American Mathematics” in the pages of a recent Best Writing on Mathematics volume.

That article […]

]]> 7a1d030d90c1d876f96cd94638796b66 Hunter Johnson commented on the post, SAGE , on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2012/04/09/sage/#comment-201 Fri, 22 Mar 2013 02:06:50 -0400 Dear Dan,

Thank you for writing such amazing software! I am now a little embarassed about the tone I used in this blog post. At the time I was writing it I was feeling a little exasperated, and also probably […]

]]> bbcc98387be2e61833808267c88f5770 Hunter Johnson wrote a new post on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2013/01/27/meaning-and-use/ Sun, 27 Jan 2013 22:04:19 -0500 ThumbnailA professional mathematician has, through exposure to many trials, become something like a desert creature, capable of supplying “meaning” metabolically by an internal gland rather than imbibing it from without. […]

]]> 42513a2e60c4ad33fb43429768f4a433 Hunter Johnson commented on the post, Outliers, Stereotypes, and Others’ Expectations with Professor Janet Liou-Mark, on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2012/11/09/outliers-stereotypes-and-others-expectations-with-professor-janet-liou-mark/#comment-164 Sat, 10 Nov 2012 20:06:55 -0500 This is very interesting! It reminds me of an article that I recently read in the Notices of the AMS by Darrel Yong:

http://www.ams.org/notices/201210/rtx121001408p.pdf

Dr Yong cites research on […]

]]> df97f6c9c81f6842770258af1297bf9b Hunter Johnson wrote a new post on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2012/05/31/existence/ Thu, 31 May 2012 14:18:38 -0400 ThumbnailI was wandering in my neighborhood bookstore this morning, when I came across a new edition of The Greek Myths, by Robert Graves.  Attracted by the cover, and my love of the Claudius series, I decided to bring it […]

]]> 6b525122dbc439ed8b29a19a905f610e Hunter Johnson commented on the post, Mysterium Cosmographicum , on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2012/05/21/mysterium-cosmographicum/#comment-74 Tue, 22 May 2012 03:29:52 -0400 I know!

Even weirder, that guy is Joan Baez’s cousin!

The first time I looked at that website it was like going to the hagga-sophia.

]]> 5ec20fb68ee74a82f3b8d6d61a33b513 Hunter Johnson commented on the post, About the header image, part 3: New results!, on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2012/05/12/about-the-header-image-part-3-new-results/#comment-72 Mon, 21 May 2012 18:28:24 -0400 See also: http://en.wikipedia.org/wiki/TetraVex

]]> 81127e1c20771222810060d8351553bc Hunter Johnson commented on the post, About the header image, part 3: New results!, on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2012/05/12/about-the-header-image-part-3-new-results/#comment-71 Mon, 21 May 2012 18:27:21 -0400 I was just wikipedia-ing around and stumbled across this article : http://en.wikipedia.org/wiki/Wang_tile

Irrelevant except that it also involves tiling, but it’s an interesting (accessible?) tile related problem.

]]> 17ba482bcfd97a058be5ac7ccfaea6db Hunter Johnson commented on the post, Thinking ahead., on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2012/05/16/thinking-ahead/#comment-70 Mon, 21 May 2012 15:47:54 -0400 It seems interesting to me that 4th grade seems to be exactly where many of our students become lost. Looking through this list of topics, I am reminded of many problem spots I have encountered in our “college […]

]]> b68edaf955cdd2da8ba98b9fd225613c Hunter Johnson wrote a new post on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2012/05/21/mysterium-cosmographicum/ Mon, 21 May 2012 15:25:48 -0400 ThumbnailWhy study mathematics? This is a catechism of mathematics education. The correct answer has something to do with the prevalence of mathematics, its applicability, its beauty, and its power.

What kind of person […]

]]> e9d5e1ace4e91380f89d4a5a350289e8 Hunter Johnson commented on the post, About the header image, part 3: New results!, on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2012/05/12/about-the-header-image-part-3-new-results/#comment-67 Tue, 15 May 2012 13:00:19 -0400 Brilliant. I love the Settler’s of Catan picture. Is there a n-dim version of this question?

]]> fa3fc3d299e8817d7c8769c0c89228b4 Hunter Johnson wrote a new post on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2012/05/06/1179/ Sun, 06 May 2012 19:25:49 -0400 ThumbnailIn every semester there are times when certain topics arise, and anyone now teaching (or enrolled in) Calc II must be dealing with infinite series.

Two things I like to present are Leibniz’s “arithmetic […]

]]> fd022aa7100b0a82cfff31049e99fe08 Hunter Johnson wrote a new post on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2012/04/29/circles-lines-and-regions/ Mon, 30 Apr 2012 03:48:12 -0400 ThumbnailLast week when I was trying to sort out a combinatorial question related to my research, I accidentally ended up redoing some fun geometry of the type covered (?) in an undergraduate discrete math, or intro to […]

]]> d89533767feca8cc5a0a2e989ee14f13 Hunter Johnson wrote a new post on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2012/04/20/the-apocalyptic-quaternion/ Sat, 21 Apr 2012 03:23:36 -0400 ThumbnailThe feelings that I associate with Quaternions (which I will persist in capitalizing, as an homage to their 19th century origins) are not really professional. I see them as a Victorian curiosity; the kind of thing […]

]]> 1bc2f9146796d92cc56b0c7e9586c8ea Hunter Johnson commented on the post, SAGE , on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2012/04/09/sage/#comment-47 Tue, 10 Apr 2012 21:39:59 -0400 Jonas, thanks!

Michael, good points. Maybe the Wubi installer is easier than a virtual machine? That would help with the resources issue. My machine has 8gb but virtualized os’s seem to run well — I am […]

]]> 40e7f55619679d0496d3f32d9a911a08 Hunter Johnson wrote a new post on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2012/04/09/sage/ Mon, 09 Apr 2012 17:06:10 -0400 ThumbnailLately I’ve been playing around with the free software package SAGE, which does a lot of things mathematical.  Though I think most people will have heard of SAGE, let me give their mission statement as expressed […]

]]> f8e509931f42a64c9712a43520679bb4 Hunter Johnson commented on the post, Totally Disconnected, on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2012/04/01/totally-disconnected/#comment-35 Mon, 02 Apr 2012 14:19:41 -0400 Yes, he was here. He didn’t leave much time for questions, but he was really interesting. I didn’t realize how uncompromising his views are– he’s kind of an anarchist.

]]> 6fb0696487a5019a32166f7450758ed7 Hunter Johnson wrote a new post on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2012/04/01/totally-disconnected/ Sun, 01 Apr 2012 23:58:40 -0400 Last week I went to two talks on my campus.  One was by Richard Stallman, one of the founders of the GNU project and thus a co-inventor of Linux. The other was by the Nobel-prize winning economist Amartya […]

]]> 45a294186cd27f1b1323f97ce53f6bc2 Hunter Johnson wrote a new post on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2012/03/25/searching-for-lakatos/ Sun, 25 Mar 2012 17:18:52 -0400 Should a textbook always give the whole truth?  Being sticklers for detail, as mathematicians generally are, the answer would seem to be an obvious “yes.”

In some cases it’s even difficult to imagine what the […]

]]> 3922db493b9c647d2d1803b3d6aa1ac9 Hunter Johnson wrote a new post on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2012/03/16/mathy-reads/ Fri, 16 Mar 2012 16:40:56 -0400 I once had an undergraduate professor, charmingly bespectacled and pleasantly ill-suited for his chosen career of mathematics, who said that no matter how high one goes in math, he or she would still need from […]

]]> e76397f251c125276b58a385a3f978cc Hunter Johnson wrote a new post on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2012/03/11/magical-arguments/ Mon, 12 Mar 2012 13:29:01 -0400 ThumbnailThere are certain arguments that are beautiful and convincing but not admissible as proofs. They give the right answer, and show in an important way why something should be true, but they don’t pass muster as […]

]]> f8a6cae20fada642e43441bdd32a5b9b Hunter Johnson commented on the post, The great search for the 16-clue Sudoku: computers, math, and the nature of proof, on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2012/03/07/the-great-search-for-the-16-clue-sudoku-computers-math-and-the-nature-of-proof/#comment-25 Fri, 09 Mar 2012 16:13:47 -0500 Very interesting. This reminds me of the quest for “God’s number” ie the minimum number of moves to solve any Rubik’s cube. An article by Rik van Grol gives a good summary.

It is strange to compare […]

]]> 82156877da0114709a0c3c0b3d3c6687 Hunter Johnson wrote a new post on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2012/03/03/offense-and-defense/ Sat, 03 Mar 2012 00:57:57 -0500 Below I will give what I think are controversial opinions on mathematics education. It isn’t my intention to offend anyone, only to motivate discussion. I also want to say in advance that when I talk about higher […]

]]> b43ca31d85967a7597dc302a3e7c5db3 Hunter Johnson wrote a new post on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2012/02/19/log-rhythms/ Tue, 28 Feb 2012 20:53:36 -0500 I’m nostalgic for an era that never included me–the days of the log table.

Eli Maor’s book e: The story of a number, turned my attention to the history of logs.  He tells the story of the Scottish wizard […]

]]> 6627a65d39e96ee949fe26e10a4016d3 Hunter Johnson commented on the post, Disturbing violations - mixed numbers, PEMDAS and more, on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2012/02/08/disturbing-violations-mixed-numbers-pemdas-and-more/#comment-8 Fri, 10 Feb 2012 14:57:10 -0500 I also hate mixed numbers — When I first came to John Jay and taught our college algebra class, I quickly found that many students made the interpretation 3(1/4) = 3.25, when I meant 3(1/4)=0.75. I suppose this […]

]]> 1169272cfb4b1f9371c399ea3896bbf3 Hunter Johnson wrote a new post on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2012/02/10/gowers-on-elsevier/ Wed, 08 Feb 2012 15:19:12 -0500 ThumbnailFields medalist and Polymath founder Timothy Gowers has some bellicose thoughts on the state of the journal industry.

 

As we all know, mathematics journals tend to be written, edited, and typeset by […]

]]> 93663883df29c061d77d42dc532a308b Hunter Johnson wrote a new post on the site CUNYMath Blog http://cunymathblog.commons.gc.cuny.edu/2012/02/03/city-of-solitude/ Fri, 03 Feb 2012 17:46:41 -0500 Many people have noticed and  commented on recent article in the New York Times on the value of solitude in creative work.

In the article, Susan Cain remarks;

… the most spectacularly creative people in […]

]]> e980c554cde4a71426db0cce3e0615e3 Hunter Johnson joined the group Improving Math Learning https://commons.gc.cuny.edu/activity/p/50213/ Sun, 08 May 2011 23:56:50 -0400 f8a5256702bac772cdf3ab6e3642afdf Hunter Johnson edited the wiki page Kitchen Sink/Kitchen Table Utilities https://commons.gc.cuny.edu/activity/p/50212/ Sun, 08 May 2011 23:13:00 -0400 50560552da2c5e11dec688ccbc518828 Hunter Johnson became a registered member https://commons.gc.cuny.edu/activity/p/50201/ Sun, 08 May 2011 20:37:10 -0400