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11:42 AM | In the Tuscan sun

Viewthestatuein Pisaof Fibonacci,mathematician in the sun. Leonardo Fibonacci (1170-1240)Links to previous postings related to Fibonacci, FIBs, and the Fibonacci numbers may be found if you click here to connect to a search box for this blog.

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5:31 PM | Sock Probability

I don’t know if problems like the following are famous, but there sure are a lot of them online — Cut the Knot, Stack Exchange, and Braingle, for example — and they’re typical for a high school classroom or middle school math competition: There are 14 red, 6 orange, 10 yellow, 8 green, 4 blue, 12 indigo, and 2 violet socks in my sock […]

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2:03 AM | Sonnets from The Voyage of the Beagle

The sonnet is a song of the body as well as of the mind:14 breaths 5 heartbeats each breathA few weeks ago I had the opportunity to be part of a poetry reading that also featured Rick Mullin -- who serves science as an editor of the Chemical and Engineering News -- and whose latest poetry book is a collection of sonnets that offer a magical and musical retelling of Darwin's voyage -- in Sonnets from The Voyage of the Beagle. Here are two selections from that
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5:19 PM | Folk music -- counting syllables

Learn about and support Women in Mathematics. One place to do that is here. Using 4x4 and 2x2 syllable-squares, I emphasize the counting that lies behind folk music in the following selection from "Some Walls" (lyrics by Mary Ann Kennedy, Pamela Rose, Randy Sharp -- but line breaks are mine), recorded by Peter, Paul, and Mary: Some walls Some walls are
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12:39 AM | Stars and men revolve in a cycle . . .

In a book-discussion group at the nearby Takoma Park Community Center, we are reading some of the short fiction of Jorge Luis Borges (1889-1986) and that reading has provoked me to dive again into my copy of his Selected Poems (Ed. Alexander Coleman, Penguin, 1999). Here is one of Borges' poems that uses terminology from mathematics:The Cyclical Night by Jorge Luis
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planetaryfolklore:
geometrymatters: The intricate work of Rafael Araujo

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4:38 PM | Include Arts in STEM -- and have STEAM !

Welcome to this blog where we support STEAM ! Visit YouTube for math-student, performance-poet Harry Baker's "A love poem for lonely prime numbers"A bit more about Harry Baker can be found in this May 23, 2014 posting. In May 2015 visit Takoma Park Community Center Galleries for a STEAM exhibit organized by visual artist and poetry-lover Shanthi Chandrasekar.

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7:05 PM | Balancing Opposites -- Tagore's Epigrams

Many important mathematical ideas occur as pairs of opposites: -2 and +2 (additive inverses), 5 and 1/5 (multiplicative inverses), bounded and unbounded, rational and irrational, convergent and divergent, finite and infiniteSome other familiar mathematical notions occur often in contrasting pairs but are not fully opposites: horizontal and
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3:07 AM | Lines of breathless length

Breathless length by JoAnne Growney A LINE, said Euclid, lies evenly with the points on itself -- that is, it’s straight –- and Euclid did (as do my friends) named points as its two ends. The LINE
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Scroll down to find titles and dates of posts so far in 2015. And follow these links for each year to to go to lists of posts through 2014, 2013, 2012 and 2011 -- and all the way back to March 2010 when this blog was begun. This link leads to a SEARCH BOX for the blog and this link leads to a PDF file that lists searchable topics and names of poets and mathematicians presented herein. Apr 29 A poem for your pocket Apr 25
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The FAQ at the Folger Shakespeare Library, referencing Martin Spevack, claims that Shakespeare’s complete works consist of 884,647 words. Open Source Shakespeare claims that his complete works consist of 884,421 words. Whatever. I’m not going to split hairs over one-twentieth of a percent. What do you get if you add 1 rabbit + ½ rabbit + ¼ rabbit + … ? Two rabbits, but that’s […]

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11:56 PM | A poem for your pocket

Years ago, when "Poem in Your Pocket Day" (April 30) was first celebrated, we did not have cellphones to carry poems with us easily. Here is a tiny but memorable poem for you to carry with you tomorrow -- on your phone or in your pocket -- a poem to open and read, again and again. Addition by Langston Hughes (1902-1967) 7 x 7 + love = An amount Infinitely
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11:01 PM | Geometry of baseball

Many poems are written of baseball; a few of them involve mathematics -- see the posting for April 9, 2010 for math-related baseball poems by Marianne Moore (1877-1972) and Jerry Wemple; see the posting for September 18, 2011 for one by Jonathan Holden. Today I feature the opening stanza from a baseball poem by Pennsylvania poet, Le Hinton. from Our Ballpark by Le Hinton This is the place where my father
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ΑΝΑΜΗΣΕΙΣ ΣΥΜΜΕΤΡΙΑΣ Μια
μυθιστορηματική περιήγηση στο έργο του χαράκτη Μάουριτς Κορνέλις Έσερ του
Ανδρέα Λύκου, Εκδόσεις Γαβριηλίδη, 2015
Βιβλιο-παρουσίαση από τον Θωμά Βουγιουκλή
Το βιβλίο είναι μια καλαίσθητη
έκδοση, 160 σελίδων με […]

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4:45 PM | Earth Day -- April 22, 2015

Consider today the thoughtful words of this sonnet by Edna St. Vincent Millay (1892-1950): Read history: so learn your place in Time And go to sleep: all this was done before; We do it better, fouling every shore; We disinfect, we do not probe, the crime. Our engines plunge into the seas, they climb Above our atmosphere: we grow not
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2:59 PM | ΑΝΑΜΝΗΣΕΙΣ ΣΥΜΜΕΤΡΙΑΣ

Το πρώτο βιβλίου του Ανδρέα Λύκου θα μας ταξιδέψει στην όμορφη, πολυπολιτισμική, Κομοτηνή, όπου θα το παρουσιάσουμε την Παρασκευή 24 Απριλίου 2015.

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3:16 PM | April celebrates Math and Poetry

April is National Poetry Month and Mathematics Awareness Month. Yesterday I was able to attend several of the popular and crowded events at the National Math Festival (Here's a link to "A Field Guide to Math on the National Mall" where you can see photos of items pointed out to yesterday's visitors.) and tomorrow evening (April 20) I will be part of a reading that features poetry of math and science at the DC Science Cafe (at Busboys & Poets, 5th &K Streets,
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4:13 PM | 11 Things to Hate About Conference Calls

Have you noticed that the word telecommute can be split into the two-word phrase telecom mute? Elegant, isn’t it? After all, there’s nothing I enjoy more than hitting the “mute” button so I can microwave a Hot Pocket® while doing a conference call from home. There are a few old jokes at the intersection of […]

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5:48 PM | Remembering Abraham Lincoln

Today -- April 14, 2015 -- marks the 150th birthday of the assassination of President Abraham Lincoln (1809 - 1865) and April 15 is the date on which he died. Lincoln loved poetry and trained his reasoning with Euclid's geometry. Here is a brief sample of his own poetry (found -- along with other samples -- at PoetryFoundation.org). Abraham Lincoln by Abraham Lincoln Abraham
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12:00 AM | Spiders vs. the Sun

Spiders vs. the Sun
Which has a greater gravitational pull on me: the Sun, or spiders? Granted, the Sun is much bigger, but it is also much further away, and as I learned in high school physics, the gravitational force is proportional to the square of the distance.
—Marina Fleming
Note: This is a spider-heavy article. I can be a little anxious about spiders myself, so my research for this article involved a lot of opening PDFs while squinting and leaning back from the screen. If
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4:10 PM | Time is no straight line . . .

Swedish poet and Nobel Laureate Tomas Transtromer (1931-2015) died last month. At his website I found this poem that reflects on the arithmetic and geometry of life:Reply to a Letter by Tomas TranstromerIn the bottom drawer I find a letter which arrived for the first time twenty- six years ago. A letter written in panic, which continues to breathe when it arrives for the second time.A house has five windows; through four of them daylight shines clear and still. The fifth
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9:18 AM | "ο ΒαsιΛιαs του Απειρου Χωρου"

Χθες το απόγευμα, μετά από πολύ καιρό, πέρασα πάνω από μια ώρα μέσα σε ένα από κείνα τα βιβλιοπωλεία που διαθέτουν τραπεζοκαθίσματα και επιτρέπουν στους πελάτες να κάθονται και να ξεφυλλίζουν τα βιβλία, που προτίθενται (ή δεν προτίθενται) να αγοράσουν. Για διάφορους λόγους, […]

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2:17 AM | Don’t Believe the HIPE

Let’s get this party started with a classic word puzzle. What English word contains four consecutive letters that appear consecutively in the alphabet? In Mathematical Mind-Benders (AK Peters, 2007), Peter Winkler describes how the puzzle above served as inspiration for a word game. I and three other high-school juniors at a 1963 National Science Foundation […]

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1:36 PM | Man Ray's "Human Equations"

Art lovers in Washington, DC have the opportunity (until 5/10/15) to see, on exhibit at The Phillips Collection, "Man Ray -- Human Equations: A Journey from Mathematics to Shakespeare." I visited the exhibit on February 19 on the occasion of a poetry reading by Rae Armantrout -- she presented work of hers that she felt captured the spirit of Man Ray's work. (Bucknell poet Karl Patten, whom I had as a poetry teacher years ago, insisted that "Every Thing Connects"
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12:00 AM | Digging Downward

Digging Downward
What would happen if I dug straight down, at a speed of 1 foot per second? What would kill me first?
Jack Kaunis
This question is the reverse of question #64, which asked how you'd die if you rose steadily at a foot per second. Digging at the same rate would kill you more quickly.
After you get through the surface layers,[1]See question #132 for more on that. temperatures rise pretty steadily as you go deeper, a trend that continues all the way to the core.
In some
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Last week the Art Works Blog posted an interview with mathematician, poet, and translator, Enriqueta Carrington. You will want to follow the link and read the whole thing. Here is a paragraph:quoting Enriqueta Carrington:Mathematics and poetry are the same thing, or one is a translation of the other.Well, perhaps that is an overstatement; but both math and poetry are about beautiful patterns, about creating, gazing at, and sharing them, and about appreciating
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Scroll down to find titles and dates of posts so far in 2015. And follow these links for each year to to go to lists of posts through 2014, 2013, 2012 and 2011 -- and all the way back to March 2010 when this blog was begun. This link leads to a SEARCH BOX for the blog and this link leads to a PDF file that lists searchable topics and names of poets and mathematicians presented herein.Mar 31 April is . . . a time for math and poetry . . .Mar 29 Science VerseMar 26
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8:27 AM | If Mathematicians Had Nicknames

Her name is Tara, but she should expect her friends to call her by a different name from now on. Not knowing all seven dwarfs is forgivable. Not knowing that sneaky isn’t spelled with two e‘s is less excusable. That she committed both errors simultaneously all but guarantees that her friends will call her Sneaky for […]

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Stupiti che 1 non sia primo? Scopriamo insieme perché è "solo" l'unità!Abbiamo già visto come, partendo dai numeri primi, si possa sviluppare un discorso più o meno approfondito sulle fondamenta matematiche. Altrettanto fondamentale, però, si rivela provare a rispondere alla domanda su quale sia il numero primo più piccolo. E', infatti, abbastanza noto come il numero 1 sia stato ora inserito ora escluso dalla lista dei numeri primi, ottenendo in alcuni casi lo status di più piccolo tra […]

Agargun A.G. & Fletcher C.R. (1997). The Fundamental Theorem of Arithmetic Dissected, The Mathematical Gazette, 81 (490) 53-57. DOI: http://dx.doi.org/10.2307/3618768

Crandall R. & Pomerance C.B. (2005). Primes!, Prime Numbers, Prime numbers: a computational perspective 1-82. DOI: http://dx.doi.org/10.1007/0-387-28979-8_1

Caldwell C.K. & Xiong Y. (2012). What is the smallest prime?, Journal of Integer Sequences, 15 arXiv: 1209.2007v2

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Winifred Edgerton Merrill fu la prima americana ad ottenere un dottorato in matematica presso la Columbia University nel 1886. Nella sua tesi sviluppò una rappresentazione geometrica degli infinitesimi in diversi sistemi di coordinate, utilizzando lo jacobiano per per derivare le trasformazioni tra gli integrali nei diversi sistemi.Tra matematica e astronomiaNata a Ripon, nel Wisconsin, il 24 settembre del 1862 da Emmet e Clara Edgerton, si trasferisce con la famiglia a New York intorno al […]

Kelly S.E. & Rozner S.A. (2012). Winifred Edgerton Merrill: "She Opened the Door", Notices of the American Mathematical Society, 59 (04) 504-512. DOI: http://dx.doi.org/10.1090/noti818

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Winifred Edgerton Merrill fu la prima americana ad ottenere un dottorato in matematica presso la Columbia University nel 1886. Nella sua tesi sviluppò una rappresentazione geometrica degli infinitesimi in diversi sistemi di coordinate, utilizzando lo jacobiano per per derivare le trasformazioni tra gli integrali nei diversi sistemi.Tra matematica e astronomiaNata a Ripon, nel Wisconsin, il 24 settembre del 1862 da Emmet e Clara Edgerton, si trasferisce con la famiglia a New York intorno al […]

Kelly S.E. & Rozner S.A. (2012). Winifred Edgerton Merrill: "She Opened the Door", Notices of the American Mathematical Society, 59 (04) 504-512. DOI: http://dx.doi.org/10.1090/noti818

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Direi che oggi pomeriggio è stato un bel respirare, al Palazzo Brera. Cristina Lazzeroni dell'Università di Birmingham è venuta alle 18 (come avevo scritto nel post precedente) per raccontare del bosone di Higgs, del modello standard e di materia e antimateria. E' una sperimentale presso l'esperimento LHCb al CERN, l'esperimento dedicato proprio alla ricerca su uno dei grandi misteri dell'universo: perché in esso c'è un eccesso di materia (e d'altra parte se non fosse così, non ci sarebbe […]

Aaij R., B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, Z. Ajaltouni, J. Albrecht, F. Alessio, M. Alexander & S. Ali & (2013). First Observation of CP Violation in the Decays of B_{s}^{0} Mesons, Physical Review Letters, 110 (22) DOI: http://dx.doi.org/10.1103/physrevlett.110.221601

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Per i I cieli di Brera, il 24 settembre (domani... scusate per il ritardo nell'annuncio...) alle 18 presso la Sala delle Adunanze dell'Istituto Lombardo nel Palazzo Brera sito in via Brera 28 (Milano), si terrà la conferenza La fisica delle particelle e il Large Hadron Collider: recenti sviluppi e questioni aperte: Cristina Lazzeroni ci introdurrà alla fisica delle particelle e agli studi fatti al Large Hadron Collider del Cern di Ginevra mettendo l’accento su recenti sviluppi come la
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Aad G., J. Abdallah, S. Abdel Khalek, O. Abdinov, R. Aben, B. Abi, S. H. Abidi, M. Abolins, O. S. AbouZeid & H. Abramowicz & (2014). Measurement of the Higgs boson mass from the $H\to \gamma \gamma $ and $H\to Z{Z}^{*}\to 4\ell $ channels in $pp$ collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector, Physical Review D, 90 (5) DOI: http://dx.doi.org/10.1103/physrevd.90.052004

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srcav tweeted: @srcav

RT @missenglish2015: Should the SNP stay out of "English" Parliament law? #ukpolitics #SNP #Conservatives #HuntingAct #animalcruelty https…

2015-05-24 20:47:43

srcav tweeted: @srcav

RT @Talking_Policy: Immigration, what is the problem? #UKpolitics #immigration #immigrationreform #immigrationcrisis http://t.co/F5exElpzj3

2015-05-24 20:47:33

freakonometrics tweeted: @freakonometrics

"Ozone Decline and Recovery" http://t.co/we7Zj4D1ta (animation) http://t.co/5ZqWpojCoU

2015-05-24 20:46:09

freakonometrics tweeted: @freakonometrics

"Inequality and NY's Subway" http://t.co/qIMzA6Erix http://t.co/YtJXUEjXo8

2015-05-24 20:44:20

MindAfterMath tweeted: @MindAfterMath

2015-05-24 20:33:43

michiexile tweeted: @michiexile

RT @seanjjordan: I just want to remind my fellow white folks...
ALL of this protest is because our justice system refuses to hold killer c…

2015-05-24 20:23:45

DrMathochist tweeted: @DrMathochist

RT @ryanqnorth: This whole recipe is here just for the pun at the end and I now endorse this cookbook 100% (@skullmandible) http://t.co/pMp…

2015-05-24 20:12:43

freakonometrics tweeted: @freakonometrics

RIP John Nash http://t.co/uakp0mjN5D

2015-05-24 20:06:44

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