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Amar Hadzihasanovic

@amarh.bsky.social

Assistant Professor at TalTech, advisor at Quantinuum. Mathematician & CS theorist. Born in ex-YU, raised in 🇮🇹, lived in 🇳🇱🇬🇧🇯🇵🇫🇷, now in 🇪🇪.

Posts Replies Media

Amar Hadzihasanovic @amarh.bsky.social · 07/07/2025

I am looking for a PhD student to join us in Tallinn! #MathSky

I am looking for a PhD student to work with me on a project at the intersection of type theory, combinatorial topology, higher category theory, rewriting theory.
Starting date is asap; you need to have a Master's degree by the start of your PhD. The expected PhD study time at TalTech is 4 years. A PhD is a salaried position and is topped with an additional tax-free stipend from the department.
There is a vibrant community of category theorists, type theorists, and theoretical computer scientists at TalTech.
The PhD candidate would join the Compositionality group led by Pawel Sobocinski. We also work with the Logic and Semantics group led by Tarmo Uustalu.
Tallinn is a beautiful city on the Baltic coast. The TalTech campus is interspersed with forested areas, which cover a large part of the country. Estonia has generous parental leave, a great education system, and legal same-sex marriage.
Send a CV and an expression of interest to amar.hadzihasanovic@taltech.ee if you are interested.

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Amar Hadzihasanovic @amarh.bsky.social · 05/05/2025

My student's first solo paper! (And fourth overall in the space of a year🤩)

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Amar Hadzihasanovic @amarh.bsky.social · 03/05/2025

The 110th PSSL (Peripatetic Seminar on Sheaves and Logic) has started in Tallinn, the first ever to take place in Estonia! #MathSky

Enrico Vitale presenting a slide on torsion and torsion-free abelian groups

Marco Abbadini presenting a slide on problems of compact metric spaces

Georg Lehner presenting a "motivation" slide

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Amar Hadzihasanovic @amarh.bsky.social · 30/04/2025

Just signed a contract with CUP for my higher-categorical diagrams book 😊

Top part of the front page of a book draft.

Title: Combinatorics of higher-categorical diagrams
Author: Amar Hadzihasanovic - Tallinn University of Technology

First part of abstract: This is a book on higher-categorical diagrams, including pasting diagrams. It aims to provide a thorough and modern reference on the subject, collecting, revisiting, and expanding results scattered across the literature, informed by recent advances and practical experience with higher-dimensional diagram rewriting.

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Reposted by Amar Hadzihasanovic

International Campaign to Ban Landmines @minefreeworld.bsky.social · 29/04/2025

It may start with #landmines, but the bigger threat lies in the erosion of the laws of war. Hear from Jody Williams, on why the recent threat of withdrawals by some European nations from the Mine Ban Treaty endangers global norms and civilian lives. #ProtectMineBan

bit.ly

‘It makes me want to scream’: Nobel peace prize winner horrified by planned exits from landmine treaty

Plans by five Nato countries to pull out of life-saving agreement are ‘stupid’, says Nobel laureate Jody Williams

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Amar Hadzihasanovic @amarh.bsky.social · 23/04/2025

I don't think I've ever had a good shower in England. Every shower in the country seems to be broken or annoying in its own way. I don't know what it is. Every other country I've been to seems to have figured showers out.

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Amar Hadzihasanovic @amarh.bsky.social · 18/04/2025

Something I think is often misunderstood, is that the idea that men are inherently dangerous to women is not anti-patriarchy, but in fact foundational to patriarchy... the bargain of patriarchy is: to protect them from the multitude of strange men, women need the patronage of a "trusted" man...

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Reposted by Amar Hadzihasanovic

George Monbiot @georgemonbiot.bsky.social · 29/03/2025

You think the arbitrary arrest of political dissenters cannot happen in the UK? It already does. www.quaker.org.uk/news-and-eve...

quaker.org.uk

Quakers condemn police raid on Westminster Meeting House

Police broke into a Quaker Meeting House last night (27 March) and arrested six young people holding a meeting over concerns for the climate and Gaza.

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Amar Hadzihasanovic @amarh.bsky.social · 18/03/2025

If adversaries use inhumane weapons, that's all the more reasons to not use them---otherwise what's the difference? I know what landmines have done to my native country, I hope my adoptive country won't make this shameful choice @tsahkna.bsky.social

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Amar Hadzihasanovic @amarh.bsky.social · 16/03/2025

Higher Topos Theory is the Infinite Jest of mathematics

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Amar Hadzihasanovic @amarh.bsky.social · 25/12/2024

A few days ago, coming back to my hotel room in Manchester, I found a Lego piece on the floor. I kept it because you never know. Today, my kid got a Lego set for Christmas, bought by my partner several days later near Bristol. There was one piece missing in the box: the one I had found.

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Reposted by Amar Hadzihasanovic

George Monbiot @georgemonbiot.bsky.social · 28/11/2024

1. You think you’ve seen it all. You really have not. I’m a hard-bitten journalist of 39 years’ standing, but details of this story made me shout, weep and slap my head. This week’s column + 🧵 www.theguardian.com/commentisfre...

theguardian.com

This society lauded a police officer who lied and cheated and ruined lives. At last, a reckoning | George Monbiot

As a ‘spy cop’, Bob Lambert callously betrayed innocent women. The official inquiry must ask harsh questions of him – and the state, says Guardian columnist George Monbiot

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Amar Hadzihasanovic @amarh.bsky.social · 20/11/2024

The programme and attendees of the First International Topological Conference in Moscow, 1935, are quite unbelievable arxiv.org/abs/1903.02065

Group photo from the First International Topology Conference in Moscow, 1935, black and white.
First row, seated, left to right: four men (K. Kuratowski, J. P. Schauder, S. Cohn-Vossen, P. Heegaard), one woman (J. A. Różańska), then four more men (J. W. Alexander, H. Hopf, P. S. Aleksandrov, P. A. Solov’yov).
Second row, standing, left to right: eleven men (E. Čech, H. Whitney, K. Zarankiewicz, A. W. Tucker, S. Lefschetz, H. Freudenthal, F. I. Frankl, J. Nielsen, K. Borsuk, D. M. Sintsov, L. A. Tumarkin), then one woman (M. A. Nikolaenko), then three more men (V. V. Stepanov, E. R. van Kampen, A. N. Tikhonov).
Text in Russian in the bottom left corner: Группа первой международной топологической конференции, Москва, 4-10 сентября 1935 г.

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Amar Hadzihasanovic @amarh.bsky.social · 15/11/2024

Should have tagged #mathsky

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Amar Hadzihasanovic @amarh.bsky.social · 14/11/2024

Hello, attempting to relocate here. I'm a mathematician & an asst prof at TalTech, working on things adjacent to higher category theory, combinatorial topology, and rewriting theory. 👋

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