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11:00 PM | Poundstone on People and Predictions

"Rock Breaks Scissors" by William Poundstone
I keep seeing William Poundstone's latest book, "Rock Breaks Scissors"
in the 'business' sections of bookstores… which I think is ashamed,
because a lot of readers who would enjoy it may miss it there. More
appropriately, and like most Poundstone books, it should be in a
science/math area, or perhaps under psychology. Poundstone is one of my

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3:30 PM | Frankl, My Dear : 3

Re: Dick Lipton & Ken Regan • (1) • (2) Here’s a few pages on differential logic, whose ideas I’ll be trying out in the present setting: Differential Logic : Introduction Differential Propositional Calculus Differential Logic and Dynamic Systems I … Continue reading →

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(Cross-posted at NewAPPS)In December, I will be presenting at the Aesthetics in Mathematics conference in Norwich. The title of my talk is Beauty, explanation, and persuasion in mathematical proofs, and to be honest at this point there is not much more to it than the title… However, the idea I will try to develop is that many, perhaps even most, of the features we associate with beauty in mathematical proofs can be subsumed to the ideal of explanatory persuasion, which I take to be the
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Time for a break with a “Rejected Post”[i] There’s one crucial point that Prosecutor Nell overlooked and failed to employ in the Oscar Pistorius trial–or so it appears. In fact I haven’t heard anyone mention it—so maybe it’s not as critical as I think it is. Before revealing (what I regard as the crucial missing […]

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From time to time I come to the realization that there are ways of reading Peirce that make no sense to me. When I stop to think about the potential sources of that evident divergence from common sense, the first … Continue reading →

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2014 Sep 10 I will have to be out of the loop for some days, but this post will give me a peg on which I can hang a few thoughts via mobile device that have been tugging at the … Continue reading →

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Memory Lane* in Honor of C.S. Peirce’s Birthday: (Part 3) of “Peircean Induction and the Error-Correcting Thesis” Deborah G. Mayo Transactions of the Charles S. Peirce Society 41(2) 2005: 299-319 Part 1 is here, Part 2, here. 8. Random sampling and the uniformity of nature We are now at the point to address the final move […]

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9:00 PM | Weekend Potpourri

Some math links from the week:
1) Evelyn Lamb interviews one of the first-ever African-American math PhDs in the country:
http://blogs.scientificamerican.com/roots-of-unity/2014/09/05/mathematics-live-evelyn-boyd-granville/
2) Folding pizza… and Gauss:
http://www.wired.com/2014/09/curvature-and-strength-empzeal/
3) Interesting thoughts from a one-time math-phobe:
http://www.usnews.com/

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I seem to have gone full circle! The very first instalment of the TYL Study Guide was a short blogpost here. Then things grew. And grew. Until we get to the current 100 page PDF monster — and that’s only as short(!) … Continue reading →

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4:00 PM | Frankl, My Dear : 2

Re: Dick Lipton & Ken Regan • (1) • (2) Having picked up a budget of definitions and notations from Post 1, return with me now to the passage from (2) that caught my eye and seemed to jog a … Continue reading →

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12:00 AM | So You Want Some Math History...

Recently finished a quickread of history professor Amir Alexander's "Infinitesimal," which has received plenty of rave reviews, a few of which I'll reference below, (as I won't fully review it myself):
http://tinyurl.com/pe2dd7w
http://tinyurl.com/nopb85a
http://tinyurl.com/mxchx6h
For whatever reason, I've never been much fascinated with math history (at least not pre-19th century history)

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4:17 PM | Apologies

On behalf of the M-Phi contributors, I want to sincerely apologize to our readers for the misguided and inappropriate post that was online at M-Phi for four days (now taken down, as well as all other posts referencing the Oxford events). The moderation structure of the blog was such that none of us could do anything to take it down, except for pleading with the author to do so.The structure and moderation of the blog will change completely now; Jeffrey Ketland will no longer be a contributor […]

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8:51 PM | A break

This is a short note just to say that I will not be contributing posts to M-Phi for the time being.

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Re: Jeffrey Brian Downard • Natural Propositions Jeff & All, With regard to “non-psychologism”, it was a slip on my part to use that term. I don’t think I’ve ever used it before. At any rate I will try to … Continue reading →

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6:48 PM | Frankl, My Dear : 1

Re: Dick Lipton & Ken Regan • (1) • (2) I need to think a little about the context of this Frankl Conjecture, if not exactly about the problem itself. This will be a very scratchworky post-in-progress (PIP❢) — hopefully … Continue reading →

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If you happened not to see her final testimony and plea for the legalization of assisted suicide, then do read these very moving webpages left by Gillian Bennett (the wife for 57 years of that fine philosopher Jonathan Bennett) who … Continue reading →

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Abbreviated Table of Contents: Here are some items for your Saturday-Sunday reading. Link to complete discussion: Mayo, Deborah G. On the Birnbaum Argument for the Strong Likelihood Principle (with discussion & rejoinder). Statistical Science 29 (2014), no. 2, 227-266. Links to individual papers: Mayo, Deborah G. On the Birnbaum Argument for the Strong Likelihood Principle. Statistical […]

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2:56 PM | The Oxford Lynch Mob

It is a rare experience for victims of long-term stalking, violent assault and harassment to be harassed by a gang of aggressive Oxbridge thugs. As I put it in March 2014 on Prof. Leiter's blog:[....] behind the scenes a group of graduate students, including some of the signatories of the Open Letter of 5 March 2014, had been campaigning the University to have my contact with students suspended and me fired. My supervisions were reassigned, my seminars were postponed and then reassigned to my
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7:00 PM | Skiourosemiosis • 1

The resultant metaphysical problem now is this:Does the man go round the squirrel or not? — William James, Pragmatism ☞ Differential Analysis of Propositions and Transformations

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11:30 AM | Friday Grab-bag

This week's mathy selections:
1) Been wantin' to catch up on your Babylonian math history? …well, Evelyn Lamb is right there for ya:
http://blogs.scientificamerican.com/roots-of-unity/2014/08/31/look-ma-no-zero/
2) One of my favorites, James Grime, opened a brand-spanking new website recently (good stuff):
http://www.jamesgrime.com/
3) Math, logic, Buddhism, and more from interview with

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Error Statistics Philosophy: Blog Contents By: D. G. Mayo[i] Each month, I will mark (in red) 3 relevant posts (from 3 yrs ago) for readers wanting to catch-up or review central themes and discussions. September 2011 (9/3) Frequentists in Exile: The Purpose of this Blog (9/3) Overheard at the comedy hour at the Bayesian retreat (9/4) Drilling Rule #1 (9/9) Kuru (9/13) In […]

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11:01 AM | One little “}”

No, you didn’t need new spectacles. One little “}” missing, and the last half of the lovingly crafted TYL version 12.0 was all in the smaller font intended for postscripts and asides. Pah! Sometimes is annoying. Just a tinsy bit. OK, so here’s version … Continue reading →

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4:04 AM | Teach Yourself Logic

Peter Smith, long ago a Cambridge colleague of mine, whose blog is Logic Matters, regularly updates his Teach Yourself Logic Study Guide, an annotated reading list for mathematical logic. It's useful for students, or anyone really, who want to do some self-study. Version 12.0 of the guide can be downloaded here.

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Where did you hear this? “Join me, if you will, for a little deep-water drilling, as I cast about on my isle of Elba.” Remember this and this? And this philosophical treatise on “moving blog day”? Oy, did I really write all this stuff? I still see this as my rag-tag amateur blog. I never […]

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4:29 PM | Teach Yourself Logic, version 12.0

In time for the new semester/new term/new academic year (depending on how things are chunked up in your neck of the woods), there’s a new version of the Teach Yourself Logic Study Guide and a supplementary page on Category Theory, … Continue reading →

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Re: Frederik Stjernfelt • Natural Propositions Frederik, One small point that I find myself making on a periodic basis: I think it is better to describe Peirce’s take on logic as “non-psychologism” rather than “anti-psychologism”, the main thing being that … Continue reading →

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11:00 AM | Robin Williams Redux...

Now for something completely different (for MathTango)…
I've
written before how much I admire Cathy O'Neil's keen ability to touch
on varying topics over at her blog. Despite coming from a
mathematics academic background and titling her blog "Mathbabe,"
Cathy writes on a wide range of topics that rattle
around in her head. So I'll sorta take that cue today to veer off and relate an odd,

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5:34 PM | What we see when….

I recently listened to Krys Boyd’s interview with Peter Mendelsund, author of the new book What We See When We Read, on North Texas’ public radio. Mendelsund is an award-winning book jacket designer. The interview had the effect of connecting his thoughts about reading to thoughts that I have had about mathematics. It wasn’t immediately [...]

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An Assumed Law of Statistical Evidence (law of likelihood) Nearly all critical discussions of frequentist error statistical inference (significance tests, confidence intervals, p- values, power, etc.) start with the following general assumption about the nature of inductive evidence or support: Data x is better evidence for hypothesis H1 than for H0 if x are more probable under H1 than […]

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11:15 AM | Friday Wrap-up

Another week from the world of math:
1) Article touting the role of rote memorization in early math education:
http://tinyurl.com/lj759wd
2) Fawn Nguyen describes the beginning of her classroom school year, as perhaps only she can:
http://fawnnguyen.com/first-two-days-school/
3) LA Times op-ed on the gender-gap in mathematics:
http://www.latimes.com/opinion/op-ed/

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On Saturday, I arrived in Columbus, Ohio for the the MBI Workshop on the Ecology and Evolution of Cancer. Today, our second day started. The meeting is an exciting combination of biology-minded mathematicians and computer scientists, and math-friendly biologist and clinicians. As is typical of workshops, the speakers of the first day had an agenda […]

Baker AM, Cereser B, Melton S, Fletcher AG, Rodriguez-Justo M, Tadrous PJ, Humphries A, Elia G, McDonald SA, Wright NA & Simons BD (2014). Quantification of crypt and stem cell evolution in the normal and neoplastic human colon., Cell reports, 8 (4) 940-7. PMID: 25127143

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One of the exciting things in reading philosophy, its history in particular, is experiencing the tension between different schools of thought. This excitement turns to beauty if a clear synthesis emerges to reconcile the conflicting ideas. In the middle to late 18th century, as the Age of Enlightenment was giving way to the Romantic era, […]

Post, E.L. (1936). Finite combinatory processes -- formulation 1., Journal of Symbolic Logic, 1 (3) 103-105.

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In effetti questa è (o dovrebbe essere) la versione estesa di una conferenza di Philip K. Dick alla convention fantascientifica di Metz, in Francia, nel 1977. Non sono riuscito a trovare trascrizioni dell'intervento realmente fatto dallo scrittore a Metz, ma il video (via Open Culture) è abbastanza differente (non troppo rispetto ai contenuti) rispetto al testo (archive.org) successivamente pubblicato sulla Philip K. Dick Society Newsletter #27.Innanzitutto Dick esprime l'idea alla base di
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Susskind L. (1995). The world as a hologram, Journal of Mathematical Physics, 36 (11) 6377. DOI: http://dx.doi.org/10.1063/1.531249

Bousso R. (2002). The holographic principle, Reviews of Modern Physics, 74 (3) 825-874. DOI: http://dx.doi.org/10.1103/revmodphys.74.825

Bekenstein J. (2008). Bekenstein-Hawking entropy, Scholarpedia, 3 (10) 7375. DOI: http://dx.doi.org/10.4249/scholarpedia.7375

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In effetti questa è (o dovrebbe essere) la versione estesa di una conferenza di Philip K. Dick alla convention fantascientifica di Metz, in Francia, nel 1977. Non sono riuscito a trovare trascrizioni dell'intervento realmente fatto dallo scrittore a Metz, ma il video (via Open Culture) è abbastanza differente (non troppo rispetto ai contenuti) rispetto al testo (archive.org) successivamente pubblicato sulla Philip K. Dick Society Newsletter #27.Innanzitutto Dick esprime l'idea alla base di […]

Susskind L. (1995). The world as a hologram, Journal of Mathematical Physics, 36 (11) 6377. DOI: http://dx.doi.org/10.1063/1.531249

Bousso R. (2002). The holographic principle, Reviews of Modern Physics, 74 (3) 825-874. DOI: http://dx.doi.org/10.1103/revmodphys.74.825

Bekenstein J. (2008). Bekenstein-Hawking entropy, Scholarpedia, 3 (10) 7375. DOI: http://dx.doi.org/10.4249/scholarpedia.7375

Citation

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Bayesian Lasso $$\begin{align*} p(Y_{o}|\beta,\phi)&=N(Y_{o}|1\alpha+X_{o}\beta,\phi^{-1} I_{n{o}})\\ \pi(\beta_{i}|\phi,\tau_{i}^{2})&=N(\beta_{i}|0, \phi^{-1}\tau_{i}^{2})\\ \pi(\tau_{i}^{2})&=Exp \left( \frac{\lambda}{2} \right)\\ \pi(\phi)&\propto \phi^{-1}\\ \pi(\alpha)&\propto 1\\ \end{align*}$$ Marginalizing over \(\alpha\) equates to centering the observations and losing a degree of freedom and working with the centered \( Y_{o} \). Mixing
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Park, T. & Casella, G. (2008). The Bayesian Lasso, Journal of the American Statistical Association, 103 (482) 681-686. DOI: 10.1198/016214508000000337

Figueiredo M.A.T. (2003). Adaptive sparseness for supervised learning, IEEE Transactions on Pattern Analysis and Machine Intelligence, 25 (9) 1150-1159. DOI: http://dx.doi.org/10.1109/tpami.2003.1227989

Armagan A., Dunson D.B. & Lee J. GENERALIZED DOUBLE PARETO SHRINKAGE., Statistica Sinica, PMID: 24478567

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gaussianos tweeted: @gaussianos

Número 8 de la revista online de matemáticas "PIkasle" - #AntologíaGaussiana http://t.co/LCOGixoCBC

2014-09-18 14:59:59

loronegro tweeted: @loronegro

¿Todo el mundo tiene una especie de microorgasmo al estirarse?

2014-09-18 14:58:28

loronegro tweeted: @loronegro

Zeus días.

2014-09-18 14:57:34

MrHonner tweeted: @MrHonner

RT @mathematicsprof: Nice reference: Digital library of mathematical functions -> http://t.co/2pcFbvR6tH

2014-09-18 14:55:53

ulaulaman tweeted: @ulaulaman

2014-09-18 14:35:20

rmathematicus tweeted: @rmathematicus

RT @mersenne_tweets: Event at Royal Institution, 23 September - please forward: The Royal Institution in partnership with the Frenc... http…

2014-09-18 14:33:02

rmathematicus tweeted: @rmathematicus

RT @OnThisDayinMath: 1846 Le Verrier transmits his most famous achievement, prediction of existence of then unknown planet Neptune, http:…

2014-09-18 14:32:52

rmathematicus tweeted: @rmathematicus

RT @OnThisDayinMath: Maxwell on Galton, "whose mission it seems to be to ride other men's hobbies to death," Would that today's insults ha…

2014-09-18 14:31:16

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