Rogier Swierstra
@rogierswierstra.bsky.social
Having fun in math and finance. Lots of opinions, not many posts (EN & NL). Read my work at https://substack.com/@rogierswierstra
Where this is heading
October 25, 2025 at 7:37 AM
Where this is heading
Here's a Frick pic
October 11, 2025 at 9:49 AM
Here's a Frick pic
Chicago faculty meeting
October 1, 2025 at 11:05 AM
Chicago faculty meeting
Delfstof van het beest!
September 8, 2025 at 8:10 AM
Delfstof van het beest!
When in Dublin I made a day-trip out of a visit to Quaternion Bridge
September 3, 2025 at 2:21 PM
When in Dublin I made a day-trip out of a visit to Quaternion Bridge
August 8, 2025 at 3:47 PM
Jeffrey Epstein also had great jeans
August 5, 2025 at 5:03 PM
Jeffrey Epstein also had great jeans
We're rapidly approaching Stage 4
July 26, 2025 at 8:31 AM
We're rapidly approaching Stage 4
I think about this a lot
July 5, 2025 at 12:12 PM
I think about this a lot
Voor de anti-antisemitisme-strijders gaat er niet om WAT er gezegd wordt, maar WIE het zegt. Zie de "unfortunate gesture" van Elon Musk
July 4, 2025 at 10:07 AM
Voor de anti-antisemitisme-strijders gaat er niet om WAT er gezegd wordt, maar WIE het zegt. Zie de "unfortunate gesture" van Elon Musk
June 5, 2025 at 6:27 AM
Uit de kop is niet duidelijk dat het gaat over ramingen voor de komende 2 jaar. Op de site ziet het er zo uit, de eerste kop zet je op het verkeerde been voor de tweede
May 1, 2025 at 5:18 AM
Uit de kop is niet duidelijk dat het gaat over ramingen voor de komende 2 jaar. Op de site ziet het er zo uit, de eerste kop zet je op het verkeerde been voor de tweede
April 18, 2025 at 7:27 AM
Where these lines meet
April 9, 2025 at 3:37 PM
Where these lines meet
That would have made a fantastic caption
"Fat Man and Little Boy land in nerve centre of US Govt."
"Fat Man and Little Boy land in nerve centre of US Govt."
March 7, 2025 at 9:54 AM
That would have made a fantastic caption
"Fat Man and Little Boy land in nerve centre of US Govt."
"Fat Man and Little Boy land in nerve centre of US Govt."
Zelenskyy responds, and pointedly does not thank Довбойоб Vance
February 28, 2025 at 7:40 PM
Zelenskyy responds, and pointedly does not thank Довбойоб Vance
Ok hoop zo dat deze berichten geen verband houden
February 12, 2025 at 4:12 PM
Ok hoop zo dat deze berichten geen verband houden
As a Dutch pension-managing burgher I did recognize the image.
And for the avoidance of doubt -- Dutch burghers not being renownend for their subtlety -- I think the analysis itself is a fantastic piece of work. And it must have been quite a bit of work too:
And for the avoidance of doubt -- Dutch burghers not being renownend for their subtlety -- I think the analysis itself is a fantastic piece of work. And it must have been quite a bit of work too:
February 12, 2025 at 12:28 PM
As a Dutch pension-managing burgher I did recognize the image.
And for the avoidance of doubt -- Dutch burghers not being renownend for their subtlety -- I think the analysis itself is a fantastic piece of work. And it must have been quite a bit of work too:
And for the avoidance of doubt -- Dutch burghers not being renownend for their subtlety -- I think the analysis itself is a fantastic piece of work. And it must have been quite a bit of work too:
In Lille for the holidays and there's a monument for the 20K carrier pigeons who died in WWI, "monument aux pigeons voyageurs"
and the handlers executed for espionage
and the handlers executed for espionage
December 31, 2024 at 8:59 AM
In Lille for the holidays and there's a monument for the 20K carrier pigeons who died in WWI, "monument aux pigeons voyageurs"
and the handlers executed for espionage
and the handlers executed for espionage
"You'll be visited by three spirits"
The spirits, representing triangles in various geometries
The spirits, representing triangles in various geometries
December 24, 2024 at 1:27 PM
"You'll be visited by three spirits"
The spirits, representing triangles in various geometries
The spirits, representing triangles in various geometries