Attached is a picture I took during the reception mentioned by André. 
First on the left, you can see Marek with his unmistakable smile.

Best,
Chris

On 2024-03-06 11:52 a.m., Joyal, André wrote:
> Dear Karol,
> 
> I am shocked to learn that Marek Zawadowski has passed away.
> I wish to express my condolances to all, especially to you Karol,
> to Justyna Grudzinska and to Krzysztof Kapulkin.
> 
>   Marek was a very talented mathematician, a great teacher and a very 
> kind person.
> He received is Phd from the University of Montreal in 1989 under the 
> direction of Gonzalo Reyes.
> He mostly worked in mathematical logic, category theory and higher 
> category theory,
> He contributed to the rebirth of the great Polish school of mathematics.
> He was passionate about the philosophical and social impact of mathematics.
> I will always remember the reception he held with his father in Warsaw 
> during
> the celebration of Eilenberg's centenary in 2013.
> His father remembered the brutality of WWII.
> I wish to his express my condolances to Marek's family.
> 
> André Joyal
> 
> 
> 
> 
> 
> ------------------------------------------------------------------------
> *De :* Karol Szumiło <karol.szumilo@gmail.com>
> *Envoyé :* 6 mars 2024 01:20
> *À :* categories@mq.edu.au <categories@mq.edu.au>
> *Objet :* Re: Marek Zawadowski
> The news of Marek's passing is immensely saddening. He was among the 
> kindest, most thoughtful and optimistic people I have ever known. He was 
> my first teacher of category theory and his influence over my outlook on 
> mathematics cannot be overstated. Marek was also the one who urged me to 
> take up a job at the University of Warsaw. I count myself lucky for 
> having the benefit of his companionship over the last two years. He will 
> be greatly missed.
> 
> Karol Szumiło
> 
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