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Andreas Fjellstad

@fjellandy.bsky.social
182 followers 187 following 389 posts

Philosopher of logic and computation. Logician. Can apply infinitary inference rules without divine revelations.

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Andreas Fjellstad @fjellandy.bsky.social · 08/10/2026
It wasn't true.
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Andreas Fjellstad @fjellandy.bsky.social · 22/09/2026
Staring at a claim I've written up as a lemma, wondering about whether it is true.
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Reposted by Andreas Fjellstad
Twonks @twonks.bsky.social · 13/07/2026
Great job 👏
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Michael Caley @michaelcaley.bsky.social · 09/07/2026
I did it I wrote the article wish me luck Lionel Messi is the GOAT, Ronaldo is not, why just about every statistical analyst agress www.expectinggoals.com/p/messi-rona...
expectinggoals.com
Why Messi keeps thriving as Ronaldo fades: The GOAT's always been the best
I'm not proud, or tired
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Andreas Fjellstad @fjellandy.bsky.social · 03/04/2026
We call it the long friday in Norwegian, so if you have plenty of time, here's my most recent paper on contraction-free sequent calculi for S5 and Carnap's C obtained through local and global metainferential validity: link.springer.com/article/10.1...
link.springer.com
Metainferences, Invalidities and Contraction-Free Sequent Calculi for S5 and Carnap’s C - Journal of Philosophical Logic
This paper develops a sequent calculus framework for representing locally and globally valid metainferences through which contraction-free sequent calculi for the modal logics S5 and the propositional...
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Andrea Pitzer @andreapitzer.bsky.social · 20/01/2026
I wrote about how concentration camp regimes evolve and why it's not too late to stop this, even though we are deep in it now.
degenerateart.beehiiv.com
Into the abyss
The correct response to Dachau was not better training for the guards.
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Andreas Fjellstad @fjellandy.bsky.social · 10/12/2025
Luckily, this kind of knowledge is now becoming obsolete.
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Andreas Fjellstad @fjellandy.bsky.social · 09/12/2025
Unhappy with the excessive and awkward vertical spacing between theorems and proofs with Springer's LaTeX style? Just put the proof environment within the theorem environment.
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Andreas Fjellstad @fjellandy.bsky.social · 31/10/2025
So, i guess you are curious about which of the following variants of Nespresso is the better option 13 years after their production date?
Photo of the production and best before date of three nespresso coffee packages, produced October 2013.Photo of three nespresso coffee packages: vivalto lungo, fortissio lungo and linizio lungo.
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Philip O'Connor @philipoconnor.bsky.social · 15/10/2025
Aftonbladet's interview with Greta Thunberg is now available in English - it raises many serious questions, not least about the Swedish govt. effectively abandoning its citizens to torture because it doesn't agree with their politics. A thundering disgrace. www.aftonbladet.se/nyheter/a/25...
aftonbladet.se
Greta Thunberg: “They kicked me every time the flag touched my face”
– Greta Thunberg on her days in Israeli captivity Beating, kicking, and threats of being gassed in cages. Greta Thunberg and several others from the flotilla ar
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Andreas Fjellstad @fjellandy.bsky.social · 15/10/2025
Of course you can have Moomin biscuits with a dash of Nutella as a snack. Hashtag finnish-italian fusion.
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Andreas Fjellstad @fjellandy.bsky.social · 24/09/2025
Caster Semenya's 800m PB is only 0.3s better than Keely Hodgkinson's.
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Tim Krief @timkrief.com · 16/09/2025
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Andreas Fjellstad @fjellandy.bsky.social · 08/09/2025
Jeg har alltid stemt MDG, og gjorde det jammenmeg i år også.
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Mal Function @mister-fishy.bsky.social · 01/09/2025
What were they arguing about
News headline - Scottish brothers finish mammoth row across Pacific Ocean after 139 days
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Andreas Fjellstad @fjellandy.bsky.social · 21/07/2025
"What is philosophy?", the four-year old asked during breakfast today. "Good question," I replied.
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Andreas Fjellstad @fjellandy.bsky.social · 09/07/2025
And the seemingly "colder" last two weeks of June in Helsinki was actually just average wrt reference period.
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Andreas Fjellstad @fjellandy.bsky.social · 16/04/2025
Within philosophy of mathematics, there is the Hilbertian view that consistency implies existence. What is the corresponding general position in metaphysics? That is, a position that would justify an axiom like "there is an x s.t. p(x) and p'(x) ...)" for arbitrary finite sequences of predicates?
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Andreas Fjellstad @fjellandy.bsky.social · 28/03/2025
Og Støre ble vel innvalgt som leder av AP fordi han hadde vist østlandsk teft?
Støre er sitert på at Opsal har "vist både handlekraft og nordnorsk teft".
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Andreas Fjellstad @fjellandy.bsky.social · 13/02/2025
So a bit like the Molotov–Ribbentrop Pact, eh?
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Shawn Standefer @standefer.bsky.social · 02/02/2025
The AJL has published a new issue. A multiplicative ingredient for omega-inconsistency, by Andreas Fjellstad Minimal-Inconsistency Tolerant Logics: A Quantitative Approach, by Christian Strasser and Sanderson Molick Silva ojs.victoria.ac.nz/ajl/issue/vi...
ojs.victoria.ac.nz
Vol. 22 No. 3 (2025): The Australasian Journal of Logic | The Australasian Journal of Logic
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Andreas Fjellstad @fjellandy.bsky.social · 01/02/2025
But metaphysics is nothing without logic, right?
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Andreas Fjellstad @fjellandy.bsky.social · 17/01/2025
Submitted no less than three peer review reports this morning.
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Andreas Fjellstad @fjellandy.bsky.social · 15/01/2025
Ethnographic surrealism: theconversation.com/buried-alive...
theconversation.com
Buried alive? The surreal story of how COVID took over a remote city in the Amazon
In the Peruvian Amazonian city of Iquitos, the first wave of COVID-19 brought unprecedented chaos and a black market in oxygen and mass graves.
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Andreas Fjellstad @fjellandy.bsky.social · 23/12/2024
It's sunny in Tacuarembo, Uruguay.
UV forecast is "13 / extreme"
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Andreas Fjellstad @fjellandy.bsky.social · 09/12/2024
Den nye "katastrofemålingen" er innenfor feilmarginene til den målingen forrige uke, sant?
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Andreas Fjellstad @fjellandy.bsky.social · 29/11/2024
I've started speaking to the robot vacuum cleaner, in Norwegian, as if it is a small animal like a hedgehog or something.
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Andreas Fjellstad @fjellandy.bsky.social · 23/11/2024
It is possible to have the same username and password at each journal on Editorial Manager.
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Andreas Fjellstad @fjellandy.bsky.social · 08/11/2024
Some days you drop one of your earbuds in your coffee cup.
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Andreas Fjellstad @fjellandy.bsky.social · 01/11/2024
My multi-lingual 3 and 3/4 year old daughter, who loves unicorns, is refusing to recognise the existence of the number 15. She skips it when counting, regardless of language.
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Andreas Fjellstad @fjellandy.bsky.social · 22/08/2024
Submitting a referee report exactly one week after I received a reminder from the journal that the report was due in one week.
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Andreas Fjellstad @fjellandy.bsky.social · 30/06/2024
Someone should tell football players and managers that the best way to avoid being ruled to be in offside position is to avoid being in offside position.
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Mario Sixtus @sixtus.net · 19/05/2024
Als statt Klimaaktivisten plötzlich Klimaaktivitäten den Verkehr lahm legten, erwiesen sich die Strafgesetze als wirkungslos.
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Andreas Fjellstad @fjellandy.bsky.social · 22/04/2024
Imagine if there would be a PDF online somewhere of "Quantifiers, Logic and Language", edited by van der Doos and van Eijck from 1996!
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Emily M. Bender @emilymbender.bsky.social · 13/03/2024
Tell me you (Elsevier) publish journal articles without either review or editing without telling me...
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Andreas Fjellstad @fjellandy.bsky.social · 11/02/2024
Finally managed to sort out the rings, only 1061 days after the wedding.
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Camilla Holm Soelseth @supercamilla.bsky.social · 18/12/2023
This text is on fire. 🔥🔥🔥 "The point is that “AI” is a process designed to do what capitalism has always done: reorganize forms of social cooperation into structures designed to allow capitalists to better exploit them"
robhorning.substack.com
Fake totalities
In the latest New Left Review, Hito Steyerl writes: Large language models enclose miscellaneous data and privatize them for further development, following the precedent set by Web2 and social media. I...
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Andreas Fjellstad @fjellandy.bsky.social · 23/11/2023
Stable diffusion is really struggling with generating a simple image of one book, as opposed to for example chairs, cats and cars. Maybe internet needs more images of books?
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Andreas Fjellstad @fjellandy.bsky.social · 22/11/2023
As a true millennial, I prepare baby food with quinoa and avocado.
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