2025, you were: The Sant Cugat Prize, a feeling of recognition and belonging Gauss in May A Chinese Dragon in July re-energising, unstoppable. Zurich in winter A private concert at the Petite Malmaison Bach Oratorium at the Fraumünster and vermicelli closing the circle Thank you!

This is exciting for a lot of reasons. But I am smug every time I see this stuff because it further reinforces my theory that computation or something directly related to it is in some sense universal, and perhaps even fundamental, to our universe.

If there's an aesthetics of the intersection of CS and physics --and I think field-specific aesthetics is an insufficiently explored area in mathematics, programming, and data modeling-- this paper is surely in the purest Classical tradition.

It reaffirms my belief that anything sufficiently complex can serve as a universal computer and thus obeys the theorems regarding those. All is well.

After the Magic game, classical billiards as a Universal Turing Machine :)

Since the halting problem is undecidable, this means there are some yes-or-no questions about the eventual future behavior of a point bouncing around in this region of the plane that cannot be settled in a finite time by any computer program. (2/n) arxiv.org/abs/2512.19156

New result: you can build a universal computer using a single billiard ball on a carefully crafted table! More precisely: you can create a computer that can run any program, using just a single point moving frictionlessly in a region of the plane and bouncing off the walls elastically. (1/n)

Happy Holidays! arxiv.org/abs/2512.19156

This Christmas 🎄 the balls left the tree, bounced across a billiard table 🎱, and—inevitably—started computing. With Isaac Ramos, we show that billiard dynamics is undecidable: arxiv.org/abs/2512.19156 In the computational universe of Cris Moore and @stephenwolfram.bsky.social

Ever wondered why you were never very good at billiards? This might be why. 🎱

With this article we are closing an open problem by Cris Moore on whether 2D billiards can simulate a universal Turing machine. So, stay tuned next time you play billiards....you could be computing....

Classical billiards can compute. With Isaac Ramos, we show that 2D billiard systems are Turing complete, implying the existence of undecidable trajectories in physically natural models from hard-sphere gases to celestial mechanics. Determinism ≠ predictability. 🎱🧠 @upc.edu @ricardsole.bsky.social

My stay at @ethz.ch as Nachdiplom lecturer is coming to an end. Inspiring audience, deep exchanges in lectures, people knocking on my door to discuss maths. I’ll miss this more than I expected. Was bleibt, ist Dankbarkeit für das Gelebte und Sehnsucht nach dem, was kommt #Sehnsucht

Our call for nominations for the Hardy Lectureship 2025 is open! Nominate a distinguished mathematician based outside of the UK to give a series of lectures within the UK. Previous Hardy Lecturers incl. Emily Riehl, Eva Miranda, Nalini Joshi. ➡️ www.lms.ac.uk/events/lectu...

À lire : cet entretien dans La Gazette qui révèle pleinement la personnalité et la force de Michèle Audin. Page 52.https://smf.emath.fr/system/files/filepdf/issue-BD.pdf

Je viens d’apprendre le décès de Michèle Audin. La nouvelle me bouleverse profondément. Mathématicienne brillante, écrivaine engagée, elle va terriblement manquer. Voici une photo de Michèle en action au CIRM, ainsi qu’une photo de groupe où nous sommes côte à côte lors d’un colloque en 2006.

Just as Smale's horseshoe is the shape of classical chaos — what is the shape of logical chaos? What is the shape of the undecidable? Soon at @ethz.ch @walkingthedot.bsky.social

Avui donem el tret de sortida a l’ #AnyGaudí2026 des de la seva terra natal, Reus i Riudoms. Un homenatge que difondrà, al llarg del 2026, la figura i obra de l'arquitecte. ✅ Comissariat per Galdric Santana, director Càtedra Gaudí #UPC. Totes les activitats➡️ consellantonigaudi.cat

Una conversa profunda, inspiradora i plena de connexions entre matemàtiques, emoció i vida.

Excited to bring the problem of existence of undecidable trajectories in the n-body problem (n=?) and Fluid Dynamics to a “Chalk and Cheese” session at the ITS ETHZ🌀🧀 Join us on November 20 @ethz.ch @upc.edu @icreacommunity.bsky.social @crmatematica.bsky.social @climatebook.bsky.social

🦋 @evamirandag.bsky.social: "Les matemàtiques són com sortir a caçar papallones" No us perdeu l'entrevista de @silviacoppulo.bsky.social al #DivanCóppuloCatràdio amb la matemàtica i investigadora @mat.upc.edu i professora a @fme.upc.edu. @crmatematica.bsky.social www.3cat.cat/3cat/eva-mir...

Gaudiu de les reflexions que @evamirandag.bsky.social @upc.edu - @crmatematica.bsky.social - @icreacommunity.bsky.social comparteix a El Divan amb @silviacoppulo.bsky.social 🔗https://www.3cat.cat/3cat/eva-miranda-les-matematiques-son-com-sortir-a-cacar-papallones/audio/1259430/

Heureuse d’inaugurer les Journées Dynamiques 2025 en parlant de trajectoires indécidables, et de le faire de la plus belle des manières : dans l’Amphi Turing 🌀 📍Université Paris Cité – Bâtiment Sophie Germain 🕐 Mercredi à 13h30 journees-de-dynamique.imj-prg.fr

"Les matemàtiques són com sortir a caçar papallones" www.3cat.cat/3cat/eva-mir...

🚀 PhD Opportunity: Geometry of Moduli Spaces and Quantization Quantum mechanics has reshaped modern geometry from moduli spaces to algebraic structures. This PhD will explore Poisson aspects of moduli spaces and their quantization. More information: sites.google.com/upc.edu/symc...

What can be predicted when dealing with the real world? What are the limits of prediction? Watch this fantastic talk by @evamirandag.bsky.social on the nature of undecidability. With Turing, fluid turbulence, computation, chaos theory and ... rubber ducks www.youtube.com/watch?v=FsJ8...

Mathematician @evamirandag.bsky.social expounds on undecidability in fluid mechanics. This is fun: It's about rubber duckies drifting in the ocean. www.youtube.com/watch?v=cgNp...

Liderar la innovació www.elpuntavui.cat/opinio/artic... @ibub-ub.bsky.social @rramosl.bsky.social @biologiaub.bsky.social @alumniub.bsky.social @evamirandag.bsky.social @fundaciorecerca.bsky.social @joseprueda.bsky.social @genisvives.bsky.social @irbbarcelona.org @fima-ub.bsky.social

Chaos, with its fluttering butterflies 🦋 and drifting ducks 🦆, finds a graceful voice in this Quanta Fundamentals piece by @walkingthedot.bsky.social . A captivating dive into unpredictability—highly recommended! ✨📚 www.linkedin.com/pulse/how-ch...

✍🏻📸 CRÒNICA I FOTOS | Així ha sigut la gala d'entrega dels Premis Sant Cugat de l'any 2024 Els Premis Sant Cugat de l'Any premien els ciutadans amb "compromís" amb la ciutat www.totsantcugat.cat/actualitat/s...

We did it and it is here: arxiv.org/abs/2503.16100

What's beyond the fluid computer construction we unveiled @pnas.org 2021? Absolutely! Enter TKFT (aka the Hybrid Computer)—a game-changer we've been showcasing in recent lectures. The wait is over—dropping it on arXiv tomorrow!Stay [email protected] @upc.edu @crmatematica.bsky.social

Happy Pi day everyone!

Els Premis Sant Cugat 2024, anunciats ahir, posen en valor les matemàtiques: - Eva Miranda @evamirandag.bsky.social investigadora matemàtica - Institut Leonardo da Vinci, guanyador del concurs Copa Cangur 2024 de la SCM, 1r-2n ESO. Enhorabona i per moltes matemàtiques més!

Gràcies Sant Cugat!! www.totsantcugat.cat/actualitat/s...

El 22 de març celebrem una jornada plena de Matemàtiques i Informàtica a Lleida!Campus Cappont @udl.cat Tindrem sessió d’#estalmat , visita a la maqueta de de la Lluna, xerrada d’ @evamirandag.bsky.social , jocs del @mmacacat.bsky.social i gimcana matemàtica a la Seu Vella, esteu tots convidats!

Please please please write to your Representatives to support NASA. There is an easy form here. A 50% cut to the #NASA science budget would be catastrophic.

Is the universe undecidable? What a fantastic #8M to read @evamirandag.bsky.social @crmatematica.bsky.social @upc.edu in @quantamagazine.bsky.social on such exciting topic. #ILoveTheUnknown

Our research on undecidability has been featured by Quanta Magazine @rdi.upc.edu @upc.edu @fundaciorecerca.bsky.social @crmatematica.bsky.social

"A demon might be able to predict the weather in 50 years, but only with an infinite knowledge of the present all the way down to every beat of every butterfly’s wing." This is brilliant! Congratulations on the article @walkingthedot.bsky.social

Don't miss this fantastic @quantamagazine.bsky.social article on undecidability by Charlie Wood (@walkingthedot.bsky.social)! His masterful storytelling brings undecidability to life. Thanks for highlighting our work with Robert Cardona, Daniel Peralta-Salas, and Fran Presas in such an engaging way.

Physicists are drawing a firmer boundary than ever before between what is knowable and unknowable about our universe. @walkingthedot.bsky.social reports: www.quantamagazine.org/next-level-c...

Mi entrevista en Para todos la 2 en @rtvecom.bsky.social hoy: rtve.es/play/videos/... Las ecuaciones de la primera pizarra son las de geometría de contacto. En la pared un teorema para geometría b-simpléctica que demostré en 2016 @upc.edu @rdi.upc.edu @crmatematica.bsky.social @icmat.es

Mañana me estreno en La 2 hablando de Mates @upc.edu www.instagram.com/p/DGnkYq1tsU5/

The American Mathematical Society has also started a page to coordinate support for professional mathematics, so far focusing on executive orders impacting the National Science Foundation: www.ams.org/government/g...

#Actualitat ✅ | Avui se celebra el #DiaDonaiNenaEnCiència. Fomentar la vocació científica entre les nenes i garantir la igualtat d’oportunitats és clau per revertir les desigualtats. Alícia Casals i Montserrat Alsina ens recorden la importància de visibilitzar les dones en la ciència.

📐 125 estudiants d'ESO i Batxillerat participen en la 2a Olimpíada Catalana Matemàtica Femenina 🗣️ L'Anna, la Irene, l'Eva i la Carla surten molt satisfetes d'haver viscut l'experiència

Today is International Day of Women & Girls in Science. Marie Curie, the first woman to win a Nobel Prize. Her contributions have left an indelible mark on the world of science & health & continue to inspire generations of scientists & innovators. 🔬 #WomenInScience #WomenInSTEM

As the perfect finale to an exciting Day of Women and Girls in Science, we inaugurated a new room with the mayor of Reus and the surprise was immense: it bears my name! 😍 honored to see my name on a space for knowledge in my hometown Reus. Unforgettable!