Petra Schwer @petraschwer.bsky.social Mathematician based in Heidelberg, Germany.
Making research math visible -- how we think - what we do - how math works.
(she/her)
Öffentliches Interesse @gegenautogewalt.bsky.social Wir wollen die Richtlinien ändern, sodass das öffentliche Interesse in Zukunft bei Straftaten, die mit dem KFZ begangen werden, bejaht wird.
https://www.oeffentliches-interesse-autogewalt.de
ThünenPeat @thuenenpeat.bsky.social Peatland group at the Thünen Institute of Climate-Smart Agriculture
https://www.thuenen.de/en/institutes/climate-smart-agriculture/fields-of-activity/moore
The Random Sample @therandomsample.bsky.social A podcast that takes you inside the mathematical and data sciences and introduces you to some of the people involved, explores the work they’re doing, and shows the impact it’s having.
Lukas Trippe @lkstrp.bsky.social Research Software Engineer @ PyPSA
Iegor Riepin @iriepin.bsky.social Postdoc researcher @ ENSYS TUB | Energy economics-/ system modelling | https://iriepin.com/ | 🇺🇦 🇩🇪
Peter Jelinek @peterjelinek.bsky.social 🌱 Klima- & Biodiversitätskrise lösen
🇪🇺 Europäische Politik
🏔️ Edelweiss Netzwerk
🪄 The Goodforces
Unser Europabuch: https://www.oekom.de/buch/das-beste-europa-aller-zeiten-9783987265235
Reinhard Steurer @steurer.bsky.social Illusionen haben Teile der Wissenschaft erreicht. Als Prof für Klimapolitik halte ich mit Klartext und Humor dagegen, denn wenn wir Wunschdenken der Realität vorziehen, ist das die ultimative Kapitulation vor der Realität.
(Foto: Goldgruber.at)
Frank from Fork Ranger @forkranger.bsky.social 📊 Infographics to help you make sustainable food choices.
📱Download our free app to answer quiz questions & unlock recipes
Boardgame Historian @boardgamehisto.bsky.social We're a group of scientists exploring #history and #society in and of #boardgames. www.boardgamehistorian.de
🇩🇪/🇬🇧 join our research!
#publichistory | an der Tastatur: Lukas Boch
AntoinePrv @antoineprv.bsky.social 
Gurobi @gurobioptimization.bsky.social With the Gurobi Optimizer, you can identify provably optimal solutions to the world’s most complex problems—including linear, nonlinear, and quadratic problems—using any combination of continuous and integer variables.
Liz Davidson @beyondsolitaire.bsky.social 🎲 Board Game Designer
📚 Historical Games
Creative Director at Leder Games
Come talk history, games, and culture with me:
YouTube.com/beyondsolitaire
John D. Cook @johndcook.mathstodon.xyz.ap.brid.gy Consultant in applied mathematics and data privacy
https://www.johndcook.com
[bridged from https://mathstodon.xyz/@johndcook on the fediverse by https://fed.brid.gy/ ]
John D. Cook @johndcook.bsky.social Mathematician, data privacy consultant
See also @johndcook.mathstodon.xyz.ap.brid.gy
Nicky Bay @nickybay.bsky.social Macro photographer, cat slave, dedicated to flood your feed with cool spiders, insects, snakes, or anything small that moves.
PyPSA @pypsa-org.bsky.social 
@snoopymate25.bsky.social @snoopymate25.bsky.social 
Simon Willison @simonwillison.net Independent AI researcher, creator of datasette.io and llm.datasette.io, building open source tools for data journalism, writing about a lot of stuff at https://simonwillison.net/
C. Thi Nguyen @add-hawk.bsky.social Philosophy professor. My new book is THE SCORE, about true play, the limits of data - and why scoring systems can lead to beautiful games and soul-killing metrics.
ISMP 2027 – Amsterdam @ismp2027.bsky.social 26th International Symposium on Mathematical Programming | July 25–30, 2027 | Amsterdam | https://ismp2027.mathopt.nl
Dirk Lorenz @dirque.bsky.social Doing mathematics, also as a job. Now at Uni Bremen, was at TU Braunschweig. Only here for the math. Optimization, inverse problems, imaging, learning - stuff like that.
Felix Willamowski @felixoneberlin.bsky.social Into algorithmic discrete mathematics in theory and practice @rwth.bsky.social.
Ellen Vitercik @ellen-v.bsky.social MS&E + CS assistant professor at Stanford. I study reliable AI for algorithmic reasoning, optimization, and decision-making.
https://vitercik.github.io/
Connor Lawless @lawlessopt.bsky.social Stanford MS&E Postdoc | Human-Centered AI & OR
Prev: @CornellORIE @MSFTResearch, @IBMResearch, @uoftmie 🌈
Gabriel Peyré @gabrielpeyre.bsky.social CNRS researcher at ENS
Kayse Lee Maass @kayseleemaass.bsky.social Industrial Engineering Assistant Professor & Director of the Operations Research and Social Justice Lab at Northeastern University
Using #ORMS to address #Healthcare, #SocialJustice, #Access, & #HumanTrafficking
Alexander Helber @ahelber.bsky.social PhD student at the Chair of Operations Research @ RWTH Aachen
Buried Giant Studios @buriedgiantstudios.bsky.social Beautiful, interactive board games with expressive systems, emergent gameplay, and player-centered storytelling. 🎲 Oath: New Foundations 📜 Arcs: Beyond the Reach 🚀
Adam Tooze @adamtooze.bsky.social Chartbook Substack https://adamtooze.substack.com/
OnesandTooze podcast https://foreignpolicy.com/podcasts/ones-and-tooze/
C******* University historian, Director European Institute, Chair Cttee on Global Thought.
Economics, history, theory, politi
Sebastian Pokutta @spokutta.bsky.social Artificial Intelligence, Optimization, and Machine Learning. Prof @TUBerlin, Vice President @ZuseInstitute
Home: https://www.pokutta.com
Lab: https://iol.zib.de
Charlie Marsh @crmarsh.com Building Astral: Ruff, uv, and other high-performance Python tools, written in Rust.
Carsten Diekmann @carsten-diekmann.bsky.social This account will be closed soon.
morethanbendedsteel.de
Rolf van der Hulst @rolfvanderhulst.bsky.social MIP software developer at MOSEK
Completed PhD at University of Twente
Ronny Bergmann @ronnybergmann.net Førsteamanuensis, Dept. of Mathematical Sciences, Norwegian University of Science and Technology (NTNU), #Trondheim, Norway.
Numerical Riemannian geometry & optimization in Julia, e.g. Manopt.jl, Manifolds.jl, LieGroups.jl
ronnybergmann.net | manoptjl.org
Samuel Colvin @sa.muelcolvin.com Building Pydantic Logfire - uncomplicated observability for Python. Sequoia Scout.
Łukasz Langa @lukasz.langa.pl CPython Developer in Residence, Python 3.8 and 3.9 release manager. Gradual typing enthusiast, asynchronous programming proponent, creator of the auto-formatter Black.
He produces electronic music, which includes software and hardware of his own making.
CPAIOR @cpaior.bsky.social The 22nd International Conference on the Integration of Constraint Programming, Artificial Intelligence, and Operations Research November 10 to 13, 2025
Netzwerk Plurale Ökonomik @pluraleoek.bsky.social Kritische Studierende für Vielfalt in der VWL | https://www.plurale-oekonomik.de/
Achim Truger @achimtruger.bsky.social Professor of Socio-Economics, University of Duisburg-Essen, Institute for Socio-Economics + Member of the German Council of Economic Experts
Jip J. Dekker @dekker.one OPTIMA Research Fellow working on Modelling Decision/Optimization problems, Programming Languages, and AI at Monash University, Melbourne, Australia.
MiniZinc developer, CP and SAT researcher.
I also talk about music, birds, cycling, and cricket.
Pflanzenkraft @pflanzenkraft.bsky.social Ältere Posts werden in unregelmäßigen Abständen gelöscht.
Jeremy Kun @jeremykun.com Portland-based mathematician and software engineer. Building a homomorphic encryption compiler at Google.
https://jeremykun.com/linkgraph
https://heir.dev
Harald Grethe @haraldgrethe.bsky.social Prof. Agricultural Economics, Humboldt-Uni Berlin
Ag. & Food Development, Governance, Climate Policy
https://www.agrar.hu-berlin.de/de/institut/departments/daoe/ihe/standardseite
Director Agora Agriculture
https://www.agora-agrar.de/
Posts Engl. & German
NumFOCUS @numfocus.bsky.social Open Code = Better Science NumFOCUS is a 501(c)(3) nonprofit that supports and promotes world-class, innovative, open source scientific computing.
AlgorithmWatch @algorithmwatch.org We ensure that the use of algorithms & AI benefits the many, not just the few!
🇪🇺 We’re the EU/German part
🇨🇭 For Switzerland: @algorithmwatchch.bsky.social
🌐 https://algorithmwatch.org/
NEU DENKEN mit Maja Göpel @neudenken-podcast.bsky.social Der Podcast, der den Diskurs neu aufrollt – respektvoll und lösungsorientiert. Von @mission-wertvoll.org mit @beyond-ideology.bsky.social.
Podcast anhören: http://alturl.com/o446u
Podcast unterstützen: http://alturl.com/kdg9a
Stefan 🇪🇺 @stef-67.bsky.social 
Jan Haft @jan-haft.bsky.social Regisseur, Autor, Publizist
Megaherbivoren-Enthusiast
Günter M. Ziegler @gmziegler.bsky.social Günter M. Ziegler persönlich: Präsident der Freien Universität Berlin, Mathematiker, Kommunikator, Fragensteller; stark beschäftigt, daher hier nicht schnell 
Research Campus MODAL @fc-modal.bsky.social Forschungscampus MODAL - Mathematical Optimization and Data Analysis Laboratories -- Smart solutions for the digital society
https://forschungscampus-modal.de/?lang=en
Ben Grimmer @profgrimmer.bsky.social Visiting Assistant Prof @MITSloan
Assistant Prof @JohnsHopkinsAMS,
PhD in Optimization @CornellORIE
Mostly here to share pretty maths/3D prints, sometimes sharing my research
Zuse Institute Berlin @zuseinstitute.bsky.social Interdisciplinary research institute: applied mathematics & data-intensive high-performance computing
https://www.zib.de
Mosek Team @mosek.com 
Martin S. Andersen @mskan.bsky.social Associate Professor at DTU | optimization enthusiast | CVXOPT maintainer
Akshay Agrawal @akshaykagrawal.bsky.social Building the @marimo.io notebook: https://github.com/marimo-team/marimo.
PyMDE, CVXPY, & ex TensorFlow developer. Minimum-Distortion Embedding book author. Stanford BS/MS/PhD.
Utkarsh Detha @utkarshdetha.bsky.social Industrial PhD @ DTU Compute + MOSEK ApS
Giulio Mattioli @giuliomattioli.bsky.social Transport researcher with views on + than 1 topic - EU / Italian citizen with views on + than 1 country. Used to be in the UK. Now in Germany at TU Dortmund. Views my own https://t.co/ltfHVOHZe4
katapultmagazin @katapultmagazin.bsky.social Das Karten-Magazin
Marouane Felloussi @marouanefl.bsky.social phd student at mines st-étienne/univ. clermont auvergne.
interested in discrete optimization.
https://marouane-f.github.io
World Bollard Association™️ @worldbollardassoc.bsky.social The official Bluesky account of the World Bollard Association™️. MERCH STORE - https://worldbollardassociation.team-togs.com/shop/storeorderform.php
MoorBündnis @moorbuendnis.bsky.social Bündnis für Wiedervernässung von Mooren. #Klimagerechtigkeit heißt: Entwässerung beenden, #AlleMooreNass!
EURO @euroonline.bsky.social EURO – the Association of European Operational Research Societies – is a regional group within IFORS. It promotes Operational Research across Europe through events, publications, and collaboration. https://www.euro-online.org
Melanie Pichler @melaniepichler.bsky.social prof @BOKU_SEC | social ecology | political science | environmental justice | politics | social-ecological transformation
Mathias Krams @mathiaskrams.bsky.social Political scientist and transport geographer I @goetheuni.bsky.social
I climatejustice, humanrights, mobilitychange, politicalecology
Brian Christian @brianchristian.bsky.social Researcher: CHAI, @ucberkeleyofficial.bsky.social
PhD: @ox.ac.uk (@summerfieldlab.bsky.social)
Author: The Alignment Problem, Algorithms to Live By (w.
@cocoscilab.bsky.social), and The Most Human Human.
Gary Marcus @garymarcus.bsky.social AI and cognitive science, Founder and CEO (Geometric Intelligence, acquired by Uber). 8 books including Guitar Zero, Rebooting AI and Taming Silicon Valley.
Newsletter (100k subscribers): garymarcus.substack.com
Marie Segger @mariesegger.bsky.social Data journalist for @economist.com. Interim special-projects editor.
Subscribe to The Economist's data newsletter:
https://theeconomistoffthecharts.substack.com/
Ainslie Johnstone @ainsliejstone.bsky.social Data journalist 📈 and science correspondent 🧪 at The Economist
Signal: ainsliej.60
Sarah Leo @misssarahleo.bsky.social Visual data journalist at The Economist
Matt McLean @mttmc.bsky.social Lead data vis designer at The Economist
Andreas Moor @grmnd.bsky.social Interactive data journalist at @economist.com
Olivia Vane @oliviafvane.bsky.social Data visualisation design + code
Interactive data journalist at The Economist
oliviavane.co.uk
Michelle Hennessy @michellehennessy.bsky.social Editor of The Economist’s Graphic Detail section
📍in New York, via London and Hong Kong
🏢 Reuters alum
@lloydparker1.bsky.social @lloydparker1.bsky.social 
Elizabeth Lees @eljlees.bsky.social Visual data journalist @TheEconomist
Daniella Raz @daniellaraz.bsky.social US correspondent & data journalist @economist.com
https://www.daniellaraz.com/
signal: draz.15
Rosamund Pearce @rospearce.bsky.social Visual Data Journalist for The Economist
The 5th Volt @the5thvolt.bsky.social 
Bizink 🐱🌑 @bizink.pobnellion.com meow at night
Klaus Tschira Stiftung @klaus-tschira-stiftung.de Wir fördern Naturwissenschaften, Mathematik und Informatik.
#bildung #forschung #wisskomm
Datenschutz/Impressum: http://klaus-tschira-stiftung.de/datenschutz
HeiGIT @heigit.org Open-source geoinformation, methods and software for the benefit of the environment and society.
---
This is the official account of HeiGIT (Heidelberg Institute for Geoinformation Technology) at Heidelberg University.
Check us out at https://heigit.org/
Teresa Bücker @teresabuecker.bsky.social Journalistin & Autorin. Denkt nach & weiter über Zeitpolitik, Zusammenhalt, Kinderrechte, sexuelle Selbstbestimmung | Pronomen: sie/ihr
Aktuelles Sachbuch: »ALLE_ZEIT. Eine Frage von Macht und Freiheit«
NDR Sachbuchpreis 2023
https://teresabuecker.de/
Vincent D. Warmerdam @koaning.bsky.social Prefer common sense over hype. Employed at @marimo.io, known for calmcode.io and koaning.io. Also working on remember.cards these days.
Rob Hyndman @robjhyndman.com Professor of Statistics, Monash University, Australia. FAA, FASSA. Interested in #forecasting, #rstats, #statistics. he/him http://robjhyndman.com
Marcus Mergenthaler @mmergenthaler.bsky.social Professor Ag Economics / Ag Marktes & Marketing, Southwestphalia University of Applied Sciences, Soest/Germany. https://www.fh-swf.de/de/ueber_uns/standorte_4/soest_4/fb_agrarwirtschaft/dozentinnen_1/profs_aw/mergenthaler/index.php
Akrotelm 🌾 @akrotelm.bsky.social Skeets zu Blümchen 🌱 & Biodiversität 🐝
Landnutzung 🚜 & Naturschutz 🦉
Dürre 📉, Wasser 💧 & #MoorMussNass
Politik & Gesellschaft
Tom Nuttall @tomnuttall.bsky.social 
Luisa Neubauer @luisaneubauer.bsky.social Climate activist, born 364ppm, based in Berlin
psiram.com @psiram.bsky.social Realismus als Chance
https://www.psiram.com/
WePlanet DACH @weplanet-dach.org WePlanet ist auch in Deutschland, Österreich und der Schweiz aktiv.
Der Natur Freiheit schenken - Der Menschheit Wohlstand bringen
https://weplanet-dach.org
Dr. med. Janos Hegedüs @drhegedues.bsky.social Facharzt für Innere Medizin und Gastroenterologie. Skeptiker, YouTuber „Dr.Hegedüs“
Hendrik Haase @hendrikhse.bsky.social I speak and write about food, culinary culture, and a delectable future in times of ecological and technological change. ➡️ www.hendrikhaase.com
Daron Acemoglu @dacemoglumit.bsky.social Institute Professor, MIT Economics. Co-Director of @mitshapingwork.bsky.social. Author of Why Nations Fail, The Narrow Corridor, and Power & Progress.
Guillaume Dalle @gdalle.bsky.social Researcher in machine learning and optimization. Open source enthusiast. Parody songwriter (aka PianoHamster). OCD survivor.
Fabian Neumann @fneum.bsky.social Energy systems researcher at TU Berlin | PyPSA Developer | Dr.-Ing. | previously KIT, Edinburgh Uni | openmod ally
Adrian Odenweller @adrianodenweller.bsky.social PostDoc in the Energy Transition Lab @pik-potsdam.bsky.social | Hydrogen, Electrification, Energy System Modelling | All views mine 🔌💡
https://www.pik-potsdam.de/members/adrianod
Sebastian Seiffert @sci-ffert.bsky.social Naturwissenschaftler (Polymerchemie). Hochschullehrer (Physikalische Chemie). Im dynamischen Nichtgleichgewicht.
Aladin El-Mafaalani @mafaalani.bsky.social Sociologist (TU Dortmund)