X

+

Kate Stange is a mathematician -- from the Canadian province of Ontario and now at the University of Colorado -- whose father, Ken Stange, is a visual artist and poet. I met them on the internet via our combined interests in the intersections of poetry and mathematics. Lots of years ago, Kate gathered an online anthology of mathy poems. One of her recent online ventures is the development of WIN -- Women in Number Theory. Below I offer one of Ken Stange's
[…]

+

3:49 PM | Toward Infinity . . .

During summer teaching opportunities a dozen or more years ago in Deva, Romania I met Doru Radu who taught English there -- and our mutual love of poetry led us to collaborate on English translations of work by Romanian poets George Bacovia and Ileana Malancioiu. Now Doru is in Poland and he is translating Polish poetry into Romanian. One of his favorite poets is Ewa Lipska -- a poet I have met via Poetry International. Below is her poem "Newton's
[…]

+

9:07 AM | as i think i am

How I made this video: first I wrote the script then I figured out the shots I wanted and wrote those down too. Then I collected plastic teabag wrappers for a year and old earplugs and an honest grit of polenta. I looked at it sometimes, in that year. The script. At 10:48pm on Tuesday September […]

+

10:10 AM | One, Tooth, Ree, …

Were a state assessment item writer to get his hands on the puzzle that I discuss below, I believe that this is what the problem might look like: Fifteen congruent segments labeled A-O are arranged horizontally and vertically to form five squares, with five of the segments shared by two squares each. Which three segments […]

+

11:59 PM | A mathematician's favorite poet

A summertime gift book that I have much enjoyed reading is Love & Math: The Heart of Hidden Reality by Edward Frenkel (Basic Books, 2013). I admire the way Frenkel's memoir braids mathematics together with the other threads of his life. Including poetry. Like me, he chooses E E Cummings as one of his favorite poets. And he used lines from Cummings' 1931 poem "the surely" as an epigram for a 2007 book that summarized his
[…]

+

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. At the top of the column on the right is a SEARCH box for the blog and this link leads to a PDF file of searchable topics and names of poets and mathematicians presented herein.Sept 28 A subtraction problemSept 24 C K Williams -- Three Mile
[…]

+

2:28 PM | Από το αυτόνομο στο ιδεολογικό μοντέλο μαθηματικού γραμματισμού μέσω της Περιβαλλοντικής Εκπαίδευσης

No summary available for this post.

+

1:28 PM | A subtraction problem

Let's solve this subtraction problem: Women do the job minus the recognition. ____________________________ The "found poem"
[…]

+

9:03 PM | Eigencurves

Linear algebra is one of my favourite areas of mathematics. Its a simplification but you could say that the things that mathematics does well are small numbers and straight lines. The rest is… Continue reading →

+

1:11 PM | Happy “Happy Birthday” Day!

When I heard the news about the Happy Birthday lawsuit this (yesterday?) morning, I knew it would be hard to resist. As y’all probably know, we cover music and copyright law often over here at Vi Hart headquarters (see “Oh No, Pi Politics Again” and “Twelve Tones“), and I think about the Happy Birthday song […]

+

6:58 PM | C K Williams -- Three Mile Island

A poet whose work I have long enjoyed, C K Williams (1936-1915), died a few days ago. (You may find a generous sample of his poems online -- for example at PoetryFoundation.org and Poets.org.) Williams is a poet whose writing does not tend toward mathematics but his very fine poem "Tar" (about the Three Mile Island nuclear plant crisis of 1979, a year when I lived in Pennsylvania not far away) has a few numbers. I present below the first stanza of "Tar" and,
[…]

+

2:51 AM | Jaynes Bicameral Video Experiment

I did this 360 video as part of my team’s ongoing spherical video experiments. Use the WASD keys or mouse on the video to look around, or the native Android YouTube app and just move around your phone. Use headphones and listen with both ears, or just one. So here’s how that happened: I vlogged […]

+

1:06 PM | Choosing what words mean . . .

Nineteenth century writer and mathematician Lewis Carroll (1832-1898) gave his character, Humpty Dumpty, these words: "When I use a word, it means just what I choose it to mean -- neither more nor less." And so it is in mathematics -- where, for example, the term "rational" (used in the poem"The Disposition of Art," shown below) has a precise meaning that differs from its typical conversational usage. The photo below shows
[…]

+

9:18 PM | Snowflake, Seashell, Star

Alex and I initially met thanks to this blog. He was fact checking for an article that included the Taylor-Socolar aperiodic tiling that I had written up. The general theme of the article… Continue reading →

+

4:25 PM | Words of Ada Lovelace

These poetic words of Ada Lovelace (1815-1852) -- concerning translation of mathematical principles into practical forms -- I found here: Those who view mathematical science,not merely as a vast bodyof abstract and immutable truths,whose intrinsic beauty, symmetry and logical completeness,when regarded in their connexion together as a whole,entitle them to a prominent place in the interest of all profound and logical minds, but as possessing a yet deeper interest for the human
[…]

+

12:00 AM | Proton Earth, Electron Moon

Proton Earth, Electron Moon
What if the Earth were made entirely of protons, and the Moon were made entirely of electrons?
—Noah Williams
This is, by far, the most destructive What-If scenario to date.
You might imagine an electron Moon orbiting a proton Earth, sort of like a gigantic hydrogen atom. On one level, it makes a kind of sense; after all, electrons orbit protons, and moons orbit planets. In fact, a planetary model of the atom was briefly popular (although it turned out not to
[…]

+

7:51 PM | You Say It’s Your Birthday

It’s my birthday, too. Okay, not really, but it wouldn’t be surprising if it were. Today (September 17) is the fourth most common date on which to be born. Or at least it had been from 1973 to 1999, according to an analysis by Amitabh Chandra, a professor of social policy at Harvard who compiled 28 years of birth […]

+

11:59 PM | Infinite Binary Trees

So I thought this week I might remember what it is like to be a Vihart-brand Vi Hart and make a regular ol’ flat youtube video about a math thing. Also I came across this script I wrote last year that was supposed to be the next follow-up to the infinity series, and all it […]

+

Counting words . . .. 1 One 1 person 2 with courage 3 makes a majority. […]

+

4:40 AM | Loot™ — Best Game Ever?

If Loot isn’t the best game of all time, it’s at least the best game for International Talk Like a Pirate Day (September 19). For those who don’t know, Loot is a pirate-themed card game in which you can do three things: Send a merchant ship out to sea. Attack a merchant ship with pirate ships. […]

+

3:45 PM | Songs of mathematics . . .

Larry Lesser is a songwriter who uses lyrics for teaching as well as entertainment. A varied sample of his creations for doing this are presented in his article "Mathematical lyrics; noteworthy endeavors in education" found in the "Poetry and Mathematics / Special Issue" of the Journal of Mathematics and the Arts, March-June 2014). One of the article's enchanting items is a song for children -- "Circle Song" -- which Lesser has
[…]

+

11:42 AM | Lighthouses and Math in Oregon

My family and I recently spent a week along the Oregon coast, where we hiked, biked, and — of course — did some math. While on a hike through Ecola State Park, we had this view of the Tillamook Rock Lighthouse, a structure 62 feet tall that stands atop an offshore island: Never one to resist the opportunity […]

+

12:58 PM | It starts with counting . . .

Mathematical imagery is one of the many features I enjoy in the work of Canadian environmental scientist and poet Madhur Anand. Here is a sample from her new collection (A New Index for Predicting Catastrophes). Background: In an experiment designed to test the truth of a given statement (often called the null hypothesis), a Type I error occurs if the experiment results in a true hypothesis being rejected (a "false positive") and a Type II error occurs if a false
[…]

+

2:03 PM | Mathematical Modeling

My friend and colleague, University of Connecticut mathematician Sarah Glaz, is an accomplished poet and is active in coordinating math-poetry activities -- via her website, the annual BRIDGES Conference, the anthology Strange Attractors: Poems of Love and Mathematics . . . . Here is one of her mathy poems -- this one a pantoum, first published in London Grip.Mathematical Modelling by Sarah GlazMathematical modelling may be viewed As an organizing principleThat
[…]

+

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 of searchable topics and names of poets and mathematicians presented herein.Aug 31 The answer is NO Aug 27 Hate Math -- 21 Reasons (NOT) . . . Aug 23 Three (or
[…]

+

10:57 AM | The answer is NO

This past weekend I have much enjoyed reading Mathematics: a novel by Jacques Roubaud (Dalkey Archive Press, reprint 2010, translated from the French by Ian Monk); Roubaud is a mathematician, poet, and member of the OULIPO. And here is a found poem from Chapter 1:. A question posed to
[…]

+

1:12 PM | Hate Math -- 21 Reasons (NOT) . . .

Two four-letter words that I want NEVER to be used TOGETHER are hate and math. A lively contradiction to my wish is provided by the following piece by slam poet Shappy Seasholtz.(For details on the World Poetry Slam to be held in Washington DC on Oct. 7-10, scroll down to the bottom of this posting.)21 Reasons Why I Hate Math by Shappy Seasholtz1 - It's my worst subject.2 - I failed Algebra in high school.3 - When I retook Algebra in high school during the
[…]

+

4:16 PM | Three (or fewer) choices

Here is a link to an anthology of English translations of work by Chilean poet and mathematician, Nicanor Parra. Some rank Nicanor Segundo Parra Sandoval (born 5 September 1914) among the most important poets of Spanish language literature. Parra describes himself as an "anti-poet," having a distaste for poetic pomp and function; after recitations he exclaims "Me retracto de todo lo dicho" ("I take back everything I said"). I posted Parra's small poem "Thoughts"
[…]

+

8:01 PM | Caught in an infinite loop . . ..

Philadelphian Marion Cohen has been a mathematician since girlhood and a poet almost that long. Besides her mathematics and writing, she teaches an interdisciplinary math-and-literature course at Arcadia University. Here is a sample of Cohen's math poetry -- which imaginatively links mathematics to everyday life, sort of -- from her recent collection, Parables for a Rainy Day (Green Fuse Press, 2013).Weirdness at 22nd and Walnut by Marion D.
[…]

+

#548 Ulam spiral – And with this Season 3 of Geometry Daily ends. Thanks for watching! You were a wonderful audience, it’s been tremendous fun. To ease the pain, please grab some prints and other stuff!There will of course be a Season 4, someday. Whenever this will be, I hope to see you again for: A new minimal geometric composition each day.

Sidebar

Filters

+

di diffusione della scienza e rivoluzioni cc @aubreymcfato @CristianCantoro Utilizzare i dati sulle citazioni in Wikipedia per misurare la diffusione dell'open accessScrivevo all'inizio del 2011 per i festeggiamenti del wiki-decennale di una rivoluzione irreversibile. E' stato piuttosto interessante leggere il titolo che technology review ha utilizzato per raccontare dell'ultimo degli articoli dedicati all'enciclopedia libera: Why Wikipedia + Open Access = Revolution.L'idea degli autori, Misha
[…]

Nielsen, F. (2007). Scientific citations in Wikipedia, First Monday, 12 (8) DOI: 10.5210/fm.v12i8.1997

Heather Ford, Shilad Sen, David R. Musicant & Nathaniel Miller (2013). Getting to the source: where does Wikipedia get its information from?, Proceedings of the 9th International Symposium on Open Collaboration, DOI: 10.1145/2491055.2491064

Misha Teplitskiy, Grace Lu & Eamon Duede (2015). Amplifying the Impact of Open Access: Wikipedia and the Diffusion of Science, Wikipedia Workshop at 9th International Conference on Web and Social Media (ICWSM), arXiv: 1506.07608v1

Citation

+

After (or before?) @StartsWithABang's balloon animals' post? A couple of week ago Ethan Siegel published a post about ballon animals, so I decide to repost an old piece that I wrote in 2011 for my italian blog: the english version is lost, but it is magically reposted here! Two one-balloon constructions and their associated graphsI recently discovered this interesting site, vihart. In the site there are some interesting paper and today I want to write something about Computational Balloon
[…]

Demaine E.D., Demaine M.L. & Hart V. (2008). Computational balloon twisting: The theory of balloon polyhedra., Proceedings of the 20th Canadian Conference on Computational Geometry (CCCG2008), 139-142.

Bryś K. & Lonc Z. (2009). Polynomial cases of graph decomposition: A complete solution of Holyer's problem, Discrete Mathematics, 309 (6) 1294-1326. DOI: 10.1016/j.disc.2008.01.054

Citation

+

Supponiamo di doverci confrontare con un animale, ad esempio un cane o un lupo (o più in generale con un animale, addomesticato o selvaggio). Secondo Konrad Lorenz il comportamento aggressivo di un cane viene influenzato da due stati d'animo differenti: l'ira e la paura.Si può allora provare a prevedere il comportamento del cane in funzione di quale dei due stati domina: nel caso in cui l'animale è dominato da paura o da ira, proporre una previsione è abbastanza semplice; nel caso in cui il […]

Zeeman E.C. (1976). Catastrophe Theory, Scientific American, 234 65-83. DOI: 10.1038/scientificamerican0476-65

Jean Petitot (2013). Complexity and self-organization in Turing, The Legacy of A.M. Turing, (E. Agazzi, ed.), Franco Angeli, Milano, 149-182. arXiv: 1502.05328v1

Citation

+

Non prevedevo di scrivere la versione italiana di un post sull'ultima news proveniente dal RHIC, ma mi è stato gentilmente chiesto, e provvedo ben volentieri. Inizio, però, con un piccolo cappello, alla fine del quale saprete che c'è anche un piccolissimo pezzetto (il doppio diminutivo è perché i firmatari del papero su arXiv sono veramente tanti) d'Italia in questa interessante scoperta.Tutto nasce da un post, nel flusso twittero, di Annalisa Arci, in cui racconta, in maniera e con un […]

Belavina A.A., Polyakova A.M., Schwartza A.S. & Tyupkina Y.S. (1975). Pseudoparticle solutions of the Yang-Mills equations, Physics Letters B, 59 (1) 85-87. DOI: 10.1016/0370-2693(75)90163-X

Hooft G.'. (1976). Symmetry Breaking through Bell-Jackiw Anomalies, Physical Review Letters, 37 (8) DOI: 10.1103/PhysRevLett.37.8

Hooft G.'. (1976). Computation of the quantum effects due to a four-dimensional pseudoparticle, Physical Review D, 14 DOI: 10.1103/PhysRevD.14.3432

Fukushima K., Kharzeev D.E. & Warringa H.J. (2008). The Chiral Magnetic Effect, Physics Review D, 78 (7) DOI: 10.1103/PhysRevD.78.074033

Kharzeev D.E. & Yee H.U. (2011). Chiral Magnetic Wave, Physical Review D, 83 DOI: 10.1103/PhysRevD.83.085007

STAR Collaboration (2015). Observation of charge asymmetry dependence of pion elliptic flow and the possible chiral magnetic wave in heavy-ion collisions, arXiv, arXiv: 1504.02175v2

Citation

+

A new clue about the #quarkgluonplasma from @RHIC_STAR at @BrookhavenLabWithin the particles that constitute atomic nuclei, protons and neutrons, there are the quarks, the elementary particles with fractional charges, linked to each other thanks to the gluons, bosons that carry the nuclear interaction. Thanks to the gluons it is impossible to observe, at present, free quarks, but it is expected that in the very first stage of the universe, matter was in a state called quark-gluon plasma. Thanks […]

Belavina A.A., Polyakova A.M., Schwartza A.S. & Tyupkina Y.S. (1975). Pseudoparticle solutions of the Yang-Mills equations, Physics Letters B, 59 (1) 85-87. DOI: 10.1016/0370-2693(75)90163-X

Hooft G.'. (1976). Symmetry Breaking through Bell-Jackiw Anomalies, Physical Review Letters, 37 (8) DOI: 10.1103/PhysRevLett.37.8

Hooft G.'. (1976). Computation of the quantum effects due to a four-dimensional pseudoparticle, Physical Review D, 14 DOI: 10.1103/PhysRevD.14.3432

Fukushima K., Kharzeev D.E. & Warringa H.J. (2008). The Chiral Magnetic Effect, Physics Review D, 78 (7) DOI: 10.1103/PhysRevD.78.074033

Kharzeev D.E. & Yee H.U. (2011). Chiral Magnetic Wave, Physical Review D, 83 DOI: 10.1103/PhysRevD.83.085007

STAR Collaboration (2015). Observation of charge asymmetry dependence of pion elliptic flow and the possible chiral magnetic wave in heavy-ion collisions, arXiv: 1504.02175v2

Citation

christianp tweeted: @christianp

This is a very entertainingly angry R tutorial: http://t.co/iZKU8CyTkn

2015-10-13 07:43:12

OraclMachine tweeted: @OraclMachine

RT @sacrish: “只有当莱特兄弟等人不再试图模仿鸟类，而是开始运用风洞并研究空气动力学之时，‘人工飞行’的梦想才得以实现。航空工程学的教科书也从未把这一领域的目标定义为‘制造出和鸽子飞得一模一样，甚至能骗过其他鸽子的飞行器’。”
——《人工智能：一种现代方法》

2015-10-13 07:34:43

peterrowlett tweeted: @peterrowlett

RT @divbyzero: "The Importance of Recreational Math" | The New York Times http://t.co/fOBYyiSKWM

2015-10-13 07:31:53

rmathematicus tweeted: @rmathematicus

RT @PopSciGuyOz: 10 Great Science Books for Kids http://t.co/Y6HJhJwAr0 thanks to Readitdaddy #science #books #kids $

2015-10-13 06:47:46

rmathematicus tweeted: @rmathematicus

RT @NotchesBlog: "The Gay Revolution": An Interview with @simonschuster author Lillian Faderman… http://t.co/Rn9rSOtq63 http://t.co/4WeCNUi…

2015-10-13 06:36:58

rmathematicus tweeted: @rmathematicus

RT @sciencebookaday: Emmy Noether: The Mother of Modern Algebra http://t.co/XB9DL7nMKl http://t.co/JEoufhve3t

2015-10-13 06:36:14

rmathematicus tweeted: @rmathematicus

RT @PopSciGuyOz: Emmy Noether: The Mother of Modern Algebra http://t.co/BKbKBJmL5A by M Tent #science #books #biography #womeninscience

2015-10-13 06:36:01

X