Luca Nenna's Avatar

Luca Nenna

@lukenen.bsky.social

Since 1988. Mathematician living at the intersection of Quantum Mechanics, Economics and Optimal Transport. Working at U. Paris-Saclay https://lucanenna.github.io/

62 Followers  |  56 Following  |  15 Posts  |  Joined: 06.01.2025  |  1.8131

Latest posts by lukenen.bsky.social on Bluesky

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😌

03.11.2025 15:09 — 👍 1    🔁 0    💬 0    📌 0

Tres sympa lire l’évaluation du jury IUF (surtout quand on est lauréat, j’avoue) et première fois dans ma vie que le seule point faible est “a bit too trendy for my taste”…si seulement j’étais si trendy que ça 🤣

15.07.2025 11:45 — 👍 1    🔁 0    💬 0    📌 0
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Onze personnalités liées à l’Université Paris-Saclay nommées à l’Institut universitaire de France (IUF) !

Une reconnaissance prestigieuse pour leur engagement et la qualité de leurs travaux de recherche.

🔗 tinyurl.com/yey44wx2

24.06.2025 08:58 — 👍 4    🔁 2    💬 0    📌 0

IUF 🍾👍

05.06.2025 08:24 — 👍 3    🔁 0    💬 0    📌 0

Le dossier est trop jeune
Le dossier est trop théorique
Le dossier est trop numérique
Le dossier est trop “physique quantique”
Les dossier est trop “math économique”
Bon on peut se mettre d’accord ou pas? 🤣

29.05.2025 08:36 — 👍 1    🔁 0    💬 0    📌 0

C’était une campagne de (pas) recrutement prof assez traumatisante 😅 il me faudra une année pour me reprendre 🤣

23.05.2025 07:52 — 👍 0    🔁 0    💬 0    📌 0
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Dual cone and polar cone are sets in the dual of a vector space. They generalize the notion of orthogonal subspace.

04.03.2025 06:00 — 👍 15    🔁 2    💬 0    📌 0
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Voronoi diagram partitions the space in a proximity graph (cells) according to some sites. Each cell is the portion of the space where every points are closer to a given site than any other sites. cs.tau.ac.il/~michas/ak-v...

03.03.2025 06:00 — 👍 10    🔁 1    💬 0    📌 0
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Se la peter un petit peu 🤏🤣

03.03.2025 10:24 — 👍 1    🔁 0    💬 0    📌 0
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Ca fait un peu peur…😔

28.02.2025 08:52 — 👍 1    🔁 0    💬 0    📌 0

Bon y’a pas beaucoup des postes PR mais au moins y en a deux ou dans le profil y a “transport optimal”…je pense que c’est quand même un record😅

27.02.2025 08:57 — 👍 1    🔁 0    💬 0    📌 0
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The Hausdorff distance quantifies how far two sets are from each other by measuring the largest minimal distance needed to cover one with the other. It captures worst-case deviation: if one set has points far from the other, the distance is large.

25.02.2025 06:00 — 👍 27    🔁 7    💬 1    📌 0
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Retailleau grillé par un magistrat en direct sur Inter qui lui rappelle que LR a voté l'article qui a empêché l'exécution de l'OQTF visant l’influenceur algérien "Doualem". "Ca m'étonne", balaye le ministre. Salamé laisse passer.

12.02.2025 11:45 — 👍 664    🔁 227    💬 44    📌 18
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I didn’t think Trump’s second act would be that bad. Oh, how wrong I was | Arwa Mahdawi The Maga kingpin has only been president for a couple of weeks, but the chaos he has unleashed is already much worse than I thought it could be. I’m genuinely frightened The day after Donald Trump won the election, everyone in my liberal corner of…

I didn’t think Trump’s second act would be that bad. Oh, how wrong I was | Arwa Mahdawi

05.02.2025 11:15 — 👍 435    🔁 80    💬 110    📌 28

AHAHAHAHAHAHAHAHAHAHAHAHAHAHAH kind of “gnegnegnegne they cheated gnegnegngne”

29.01.2025 21:06 — 👍 1    🔁 0    💬 0    📌 0
HelloQuitteX Libérez vos espaces numériques

I’ve just done my #eXit! the X exodus is massive. Don't lose any of your followers. Thanks to #HelloQuitX I've registered 592 new passengers for a journey to #BlueSky & #Mastodon. Join us on app.helloquitx.com and automatically find your communities on #January20!

23.01.2025 18:08 — 👍 0    🔁 0    💬 0    📌 0

Y a aussi la mise en situation professionnelle…suis déjà au bout de ma vie avant commencer cette campagne PU😭😂

22.01.2025 20:40 — 👍 0    🔁 0    💬 0    📌 0
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The Mathematics of Artificial Intelligence: In this introductory and highly subjective survey, aimed at a general mathematical audience, I showcase some key theoretical concepts underlying recent advancements in machine learning. arxiv.org/abs/2501.10465

22.01.2025 09:11 — 👍 140    🔁 40    💬 2    📌 1
Large deviations for sticky-reflecting Brownian motion with boundary diffusion We study a Schilder-type large deviation principle for sticky-reflected Brownian motion with boundary diffusion, both at the static and sample path level in the short-time limit. A sharp transition fo...

It’s preprint day! 😌
Large deviations for sticky-reflecting Brownian motion with boundary diffusion - Archive ouverte HAL hal.science/hal-04895784

20.01.2025 10:59 — 👍 1    🔁 0    💬 0    📌 0
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Since on Monday I will have a paper in probability on Arxiv, can I officially apply also for full professorship in probability?🤣🤣🤣🤣

18.01.2025 20:26 — 👍 0    🔁 0    💬 0    📌 0
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Soft(arg)max function transforms logits into probability vector. One shows that softmax (w/ temperature) converges pointwise to the argmax, selecting the most likely outcome. Essential in in multinomial logistic regression and for attention mechanisms

17.01.2025 06:00 — 👍 10    🔁 1    💬 2    📌 0
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Slides for a general introduction to the use of Optimal Transport methods in learning, with an emphasis on diffusion models, flow matching, training 2 layers neural networks and deep transformers. speakerdeck.com/gpeyre/optim...

15.01.2025 19:08 — 👍 126    🔁 26    💬 4    📌 1

J’ai terminé mon service d’enseignement mais pas de pause car il faut rédiger les dossiers prof…en fait suis un hamster enseignements->dossiers->enseignements->… 🐹

10.01.2025 09:54 — 👍 0    🔁 0    💬 0    📌 0
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Join the PIMS Kantorovich Initiative at the CRM-PIMS-AARMS Special Session on Optimal Transport on Jan 10 & 11.

This session features talks by scientific leaders on optimal transport and its applications.

📍 Seattle Convention Center
🔗 Learn more and register: tinyurl.com/tkshh2nj

#JMM2025

06.01.2025 22:23 — 👍 2    🔁 1    💬 0    📌 0
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Tropical geometry studies algebraic varieties through the "tropical semiring" where addition is min (or max) and multiplication is the regular addition. It transforms polynomial eqs into piecewise linear structures and is linked to dynamic programming. https://buff.ly/4gBWaZ4

09.01.2025 06:00 — 👍 15    🔁 2    💬 1    📌 0
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Brownian motion is the fundamental martingale that arises in almost all areas of mathematics with a stochastic aspect, used in biology, passing by statistical mechanics and diffusion model. https://www.tandfonline.com/doi/abs/10.1080/14786442808674769

08.01.2025 06:00 — 👍 12    🔁 3    💬 0    📌 0

Enjoyed giving this last lecture for this academic year in Orsay lucanenna.github.io/teaching/anu...

08.01.2025 10:02 — 👍 0    🔁 0    💬 0    📌 0

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