X

+

#535 Approaching – A new minimal geometric composition each day.

+

planetaryfolklore:
eideticfields: Ciudad Abierta, Juegos y torneos, 1927–77. From the archive of José Vial Armstrong, Escuela de Arquitectura y Diseño de la Pontificia. Universidad Católica de Valparaíso, Chile.(via polychroniadis)

+

#534 Fencing – A new minimal geometric composition each day.

+

12:57 PM | 11 Commonly Misspelled Words in Matheamtics

No, this isn’t meant to be another stupid post about how ppolee can raed setecnnes wehn the ltetres of ecah wrod are scamrbeld. But if you were paying attention, you may have noticed that the word mathematics was misspelled in the title. In an ironic twist of fate, the word that I misspell most often […]

+

#533 Breakpoints – A new minimal geometric composition each day.

+

2:54 AM | Algebra (sort of) in a short story

Tomorrow I head to Baltimore for the BRIDGES Math-Arts Conference.Explore the conference program at this link. Would love to see you there! It is my occasional delight to learn of a new mathy poem in an email message from Francisco José Craveiro de Carvalho, a Portuguese mathematician who loves poetry and has translated many math-related poems to and from his native language -- a seeker and finder of such poems who shares them with me. (See also 23 October 2010, 17
[…]

+

#532 Wharf – A new minimal geometric composition each day.

+

12:00 AM | Jupiter Submarine

Jupiter Submarine
What if you released a submarine into Jupiter's atmosphere? Would it eventually reach a point where it would float? Could it navigate?
—KTH
Nope! Jupiter's pressure, density, and temperature curves are different from ours. At the point in Jupiter's atmosphere where the density is high enough for a submarine to float, the pressure is high enough to crush the submarine,[1]Which makes it more dense. and the temperature is high enough to melt it.[2]Which makes
[…]

+

#531 I/O – A new minimal geometric composition each day.

+

12:25 AM | La recta en el plano

Esquema rápido que relaciona las formas principales de la ecuación de una recta en el plano y el modo de pasar de una a otra a partir de las relaciones entre coeficientes, vector y pendiente. Es muy útil para comprender la … Sigue leyendo →

+

4:44 PM | Math and Poetry and Climate

Canadian poet Madhur Anand is also an Environmental Scientist; her love of nature and concerns for preserving a habitable climate pervade her work -- and she also scatters throughout it some mathematics. You can imagine my delight when I found in her new collection (A New Index for Predicting Catastrophes) a poem (included below) that features the identity matrix. Read on!No Two Things Can Be More Equal by Madhur AnandIn undergrad I learned about the
[…]

+

#530 Mont Sainte-Victoire – A new minimal geometric composition each day.

+

#529 Illusionist – A new minimal geometric composition each day.

+

#528 Landings – A new minimal geometric composition each day.

+

#527 Dancer – A new minimal geometric composition each day.

+

Perhaps the phrase "ordinary" women scientists is an oxymoron -- but it should not be. Women should be free to populate the full range of aspiration and dedication to science or any other profession. In this spirit, I offer below a thought-provoking poem, "Ordinary Women Scientists," by science writer and poet Mary Alexandra Agner, from the excellent and important anthology Raising Lilly Ledbetter: Women Poets Occupy the Workspace. Here are links to
[…]

+

#526 Planet of the bees – A new minimal geometric composition each day.

+

#525 Tolerance – A new minimal geometric composition each day.

+

9:58 PM | Terror/Mathematics

Several friends have sent me links to the poem "Terror/Mathematics" by Zeina Hashem Beck -- written after the beheading of 21 Christian Egyptians in Libya in February 2015 and published online here in One Throne Magazine. To illustrate the style (with some mathematical symbols) and the power of the poem I offer the first couple of stanzas below -- and invite you to go to the One Throne website for all seven stanzas.from Terror/Mathematics by Zeina Hashem […]

+

#524 Ravine – A new minimal geometric composition each day.

+

#523 Room – A new minimal geometric composition each day.

+

#522 Act three – A new minimal geometric composition each day.

+

10:31 AM | Celebrating Ada Lovelace

Recently I have purchased the anthology, Raising Lilly Ledbetter: Women Poets Occupying the Workplace (edited by Caroline Wright, M.L. Lyons & Eugenia Toledo, Lost Horse Press, 2015), and have found in it dozens of wonderful poems, including several that celebrate women of science. Below I offer a poem by New York poet Jo Pitman that honors Ada Lovelace (1815-1852). Bird, Moon, Engine by Jo PitmanLike a fence or a wall to keep me from
[…]

+

#521 Shadow of a rhomb – A new minimal geometric composition each day.

+

7:57 PM | Visual-mathematical poetry

The poems that I write and most of the poems that I include in this blog use mathematical patterns to structure their lines and stanzas or mathematical terminology in their content -- but blogger Kaz Maslanka is a mathematical poet who does something different: his creations involve mathematical operations and symbols as well as words. For example, the following visual poem -- involving symbols for "equals" and "divided by" -- comes from a recent
[…]

+

#520 Horizons – You can get this a hand-made limited edition silkscreen prints only this week on Monoqi.com! – A new minimal geometric composition each day.

+

12:00 AM | New Horizons

New Horizons
What if the New Horizons hits my car?
—Robin Sheat
New Horizons is currently flying past Pluto. For the last few days, it's been giving us our first clear look at the world, and it should be making its closest approach at the moment this article is posted. Either that, or hitting your car, I guess.
It's hard to imagine how that could happen, even if New Horizons had headed to Earth by mistake. Unless there's been an especially strange freeway accident, your car
[…]

+

#519 Evening – A new minimal geometric composition each day.

+

In a collaboration with the super-hero design platform Monoqi.com I printed 12 new graphics from the Geometry Daily back catalog! (Oops, there is even one that will only be published tomorrow …)As the last four prints, these are hand-printed with silkscreens and acrylic colors on “Alt Mainz” 300g/m2 printmaking cardboard. Looks awesome. They are limited editions, signed and numbered on the backside.These prints have two different sizes, 7 graphics are 30 x 30 cm and 5 are 20 x 20 cm.
[…]

+

8:25 PM | Math fun with song lyrics

Song-writer Bill Calhoun is a faculty member in the Department of Mathematics, Computer Science and Statistics at Pennsylvania's Bloomsburg University (where I also hung out for many years). He belongs, along with colleagues Erik Wynters and Kevin Ferland, to a band called "The Derivatives." And Bill has granted permission for me to include several of his math lyrics (parodies) here. (In this previous post, we consider the connection between song parodies and mathematical
[…]

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

mathhombre tweeted: @mathhombre

2015-07-31 22:28:58

mathhombre tweeted: @mathhombre

RT @OnThisDayinMath: @dmarain @mathhombre @geogebra I think the key to understanding what is happening is to graph n Sin(2pi/n). answer is…

2015-07-31 22:28:54

loronegro tweeted: @loronegro

Viendo la transmisión directa del #Lollapalooza2015. Ya casi toca MS MR.
http://t.co/gxxponyV2l

2015-07-31 22:26:34

bobloch tweeted: @bobloch

RT @JessieJessup: This is the most Texas headline EVER http://t.co/gOyvGFDoyJ

2015-07-31 22:24:25

MindAfterMath tweeted: @MindAfterMath

Approximating the Set Cover Problem http://t.co/E8SCIiZcMP #compsci #datascience #math #stem #mathchat

2015-07-31 22:23:51

loronegro tweeted: @loronegro

Hi @EvilTed40, have you any tutorial for making with foam a medieval hemlet and chest?

2015-07-31 22:21:06

pkra tweeted: @pkrautz

Really, twitter android app? You don't trigger twitter cards preview thingies? I'm disappointed.

2015-07-31 22:12:20

pkra tweeted: @pkrautz

Really? No twitter cards? Let's try that again https://t.co/M6aa18m0nS

2015-07-31 22:11:20

X