Daniel Colquitt
@daniel.colquitt.xyz
A very applied mathematician.
Professor & Head of the Department of Mathematical Sciences @ University of Liverpool.
Views are my own &c.
Header: https://unsplash.com/@brucebmax
[ Mostly cross-posting from mastodon 🐘 https://colquitt.xyz/@daniel ]
Professor & Head of the Department of Mathematical Sciences @ University of Liverpool.
Views are my own &c.
Header: https://unsplash.com/@brucebmax
[ Mostly cross-posting from mastodon 🐘 https://colquitt.xyz/@daniel ]
Pinned
Daniel Colquitt
@daniel.colquitt.xyz
· Jan 11
Bridgy Fed
fed.brid.gy
I don’t spend much time on @bsky.app & mainly cross-post from Mastodon 🐘. But, if you follow @ap.brid.gy, you can bridge your account & let people (like me) follow you from the fediverse, which is very cool.
RE: https://infosec.exchange/@patrickcmiller/115918039973702110
Question: Why are they wearing helmets?
Question: Why are they wearing helmets?
Patrick C Miller :donor: (@[email protected])
China bans U.S. and Israeli cybersecurity software over security concerns https://securityaffairs.com/186920/intelligence/china-bans-u-s-and-israeli-cybersecurity-software-over-security-concerns.html
infosec.exchange
January 18, 2026 at 11:29 PM
RE: https://infosec.exchange/@patrickcmiller/115918039973702110
Question: Why are they wearing helmets?
Question: Why are they wearing helmets?
The West Wing remains one of the best series ever made—because it’s written like it believes words matter. #TheWestWing
Video: https://colquitt.xyz/@daniel/115913150649176858
Video: https://colquitt.xyz/@daniel/115913150649176858
January 17, 2026 at 11:59 PM
The West Wing remains one of the best series ever made—because it’s written like it believes words matter. #TheWestWing
Video: https://colquitt.xyz/@daniel/115913150649176858
Video: https://colquitt.xyz/@daniel/115913150649176858
Well… the simple central heating pump replacement escalated rapidly to a pump replacement, a wiring centre replacement, and three valve replacements.
Despite the frustration and time-sink of it all, I’m quite pleased that I managed to do it myself.
Despite the frustration and time-sink of it all, I’m quite pleased that I managed to do it myself.
January 16, 2026 at 8:17 PM
Well… the simple central heating pump replacement escalated rapidly to a pump replacement, a wiring centre replacement, and three valve replacements.
Despite the frustration and time-sink of it all, I’m quite pleased that I managed to do it myself.
Despite the frustration and time-sink of it all, I’m quite pleased that I managed to do it myself.
🎓 Together with colleagues from University of Liverpool, I am advertising three fully-funded #PhD #studentships , commencing in October 2026. More details below.
📆 Deadlines: 31st January 2026, 15th February 2026, & 2nd March 2026
🚀 Boosts would be appreciated.
📆 Deadlines: 31st January 2026, 15th February 2026, & 2nd March 2026
🚀 Boosts would be appreciated.
January 14, 2026 at 8:58 AM
🎓 Together with colleagues from University of Liverpool, I am advertising three fully-funded #PhD #studentships , commencing in October 2026. More details below.
📆 Deadlines: 31st January 2026, 15th February 2026, & 2nd March 2026
🚀 Boosts would be appreciated.
📆 Deadlines: 31st January 2026, 15th February 2026, & 2nd March 2026
🚀 Boosts would be appreciated.
https://futurism.com/artificial-intelligence/ai-prompt-plagiarism-art
Video: https://colquitt.xyz/@daniel/115884813109116988
Video: https://colquitt.xyz/@daniel/115884813109116988
January 12, 2026 at 11:52 PM
https://futurism.com/artificial-intelligence/ai-prompt-plagiarism-art
Video: https://colquitt.xyz/@daniel/115884537700766660
Video: https://colquitt.xyz/@daniel/115884537700766660
January 12, 2026 at 10:46 PM
I was looking forward to a lazy Saturday afternoon after my first week back at work. Unfortunately, my youngest had other ideas and has given me a DIY project. #FatherOfDaughers
January 10, 2026 at 12:16 PM
I was looking forward to a lazy Saturday afternoon after my first week back at work. Unfortunately, my youngest had other ideas and has given me a DIY project. #FatherOfDaughers
RE: https://flipboard.com/@bbcnews/business-h8ss70mez/-/a-1MtghImiSA2mY0tsV-jKxg%3Aa%3A3199692-%2F0
Excel is very good at what it was designed to do and LLMs are very bad at doing what excel was designed to do.
Excel is very good at what it was designed to do and LLMs are very bad at doing what excel was designed to do.
Excel: The software that's hard to quit | Flipboard
BBC News - In the 1990s some computer games had a "boss key" that allowed staff to call up an Excel spreadsheet if they needed to look like they were working. Now bosses might frown upon a worker caught labouring over a spreadsheet. Excel, owned by Microsoft, is 40-years-old. Among some tech leaders it's seen …
flipboard.com
January 9, 2026 at 12:34 AM
RE: https://flipboard.com/@bbcnews/business-h8ss70mez/-/a-1MtghImiSA2mY0tsV-jKxg%3Aa%3A3199692-%2F0
Excel is very good at what it was designed to do and LLMs are very bad at doing what excel was designed to do.
Excel is very good at what it was designed to do and LLMs are very bad at doing what excel was designed to do.
On to the final instalment … the Last Battle commences! ⚔️🛡️
https://app.thestorygraph.com/reviews/74142320-f94d-48df-abff-06adaa8e8ae9
https://app.thestorygraph.com/reviews/74142320-f94d-48df-abff-06adaa8e8ae9
January 4, 2026 at 12:09 PM
On to the final instalment … the Last Battle commences! ⚔️🛡️
https://app.thestorygraph.com/reviews/74142320-f94d-48df-abff-06adaa8e8ae9
https://app.thestorygraph.com/reviews/74142320-f94d-48df-abff-06adaa8e8ae9
January 4, 2026 at 10:09 AM
Today's task is migrating my email server database. Wish me luck ...
January 2, 2026 at 9:51 AM
Today's task is migrating my email server database. Wish me luck ...
Many thanks to everyone who helped out. The #fediverse really is a fantastic place. https://colquitt.xyz/@daniel/115793170384501735
Daniel Colquitt (@[email protected])
Anyone in the #selfhosting #email community willing to help me perform a deliverability tests for my #selfhosted mail server?
I’m looking for those running their own infrastructure and/or anyone with a big provider account (Gmail, iCloud, Yahoo, Outlook, Proton, Fastmail).
I’ll send you one email and you tell me whether it landed in your inbox, spam, or bounced. If you’re willing to help drop me a DM here to email me (my address is my handle). Thanks! 🙏🏻
colquitt.xyz
December 29, 2025 at 2:33 PM
Many thanks to everyone who helped out. The #fediverse really is a fantastic place. https://colquitt.xyz/@daniel/115793170384501735
Anyone in the #selfhosting #email community willing to help me perform a deliverability tests for my #selfhosted mail server?
I’m looking for those running their own infrastructure and/or anyone with a big provider account (Gmail, iCloud, Yahoo, Outlook, Proton, Fastmail).
I’m looking for those running their own infrastructure and/or anyone with a big provider account (Gmail, iCloud, Yahoo, Outlook, Proton, Fastmail).
December 27, 2025 at 7:27 PM
Anyone in the #selfhosting #email community willing to help me perform a deliverability tests for my #selfhosted mail server?
I’m looking for those running their own infrastructure and/or anyone with a big provider account (Gmail, iCloud, Yahoo, Outlook, Proton, Fastmail).
I’m looking for those running their own infrastructure and/or anyone with a big provider account (Gmail, iCloud, Yahoo, Outlook, Proton, Fastmail).
Uh oh … I woke up to a huge Cyanobacteria outbreak in my #aquarium yesterday, so it’s time for a blackout. Luckily, we’ve got plenty of cardboard leftover from Christmas. Wish me luck! 🐠🐌🦐🌊 :jow: :seas:
December 27, 2025 at 1:39 PM
Uh oh … I woke up to a huge Cyanobacteria outbreak in my #aquarium yesterday, so it’s time for a blackout. Luckily, we’ve got plenty of cardboard leftover from Christmas. Wish me luck! 🐠🐌🦐🌊 :jow: :seas:
December 26, 2025 at 8:51 PM
Cards written 🖋️, presents wrapped 🎁, old fashioned in hand 🥃 … Christmas may now begin.
Video: https://colquitt.xyz/@daniel/115771016946509885
Video: https://colquitt.xyz/@daniel/115771016946509885
December 23, 2025 at 9:32 PM
Cards written 🖋️, presents wrapped 🎁, old fashioned in hand 🥃 … Christmas may now begin.
Video: https://colquitt.xyz/@daniel/115771016946509885
Video: https://colquitt.xyz/@daniel/115771016946509885
It’s day 2 of my Christmas vacation and I’ve cleaned the garage, rotated my S/MIME certs, and rewrote some of my sieve filters and hacks bash scripts as milters using pymilter, which has sped up my SMTP transaction by a factor of 10 🎉 #sysadmin #selfhosted #email
December 23, 2025 at 4:05 PM
It’s day 2 of my Christmas vacation and I’ve cleaned the garage, rotated my S/MIME certs, and rewrote some of my sieve filters and hacks bash scripts as milters using pymilter, which has sped up my SMTP transaction by a factor of 10 🎉 #sysadmin #selfhosted #email
Day two of “I finished for Christmas on Friday, but I’ll spend an extra day tomorrow clearing my inbox & Todo list before finishing properly…”
… maybe I’ll do it tomorrow …
Video: https://colquitt.xyz/@daniel/115757914977208672
… maybe I’ll do it tomorrow …
Video: https://colquitt.xyz/@daniel/115757914977208672
December 21, 2025 at 2:04 PM
Day two of “I finished for Christmas on Friday, but I’ll spend an extra day tomorrow clearing my inbox & Todo list before finishing properly…”
… maybe I’ll do it tomorrow …
Video: https://colquitt.xyz/@daniel/115757914977208672
… maybe I’ll do it tomorrow …
Video: https://colquitt.xyz/@daniel/115757914977208672
I have now firmly entered the “That sounds like a 2026 problem to me” phase of the year.
Video: https://colquitt.xyz/@daniel/115719921597136262
Video: https://colquitt.xyz/@daniel/115719921597136262
December 14, 2025 at 9:00 PM
I have now firmly entered the “That sounds like a 2026 problem to me” phase of the year.
Video: https://colquitt.xyz/@daniel/115719921597136262
Video: https://colquitt.xyz/@daniel/115719921597136262
‘Tis the season of primary school nativities 🕴️👶⭐️🫏✝️
Video: https://colquitt.xyz/@daniel/115699953699699108
Video: https://colquitt.xyz/@daniel/115699953699699108
December 11, 2025 at 8:23 AM
‘Tis the season of primary school nativities 🕴️👶⭐️🫏✝️
Video: https://colquitt.xyz/@daniel/115699953699699108
Video: https://colquitt.xyz/@daniel/115699953699699108
Just to check my sanity: there is no danger to running `tootctl accounts cull`, right?
#mastoadmin
#mastoadmin
December 6, 2025 at 8:11 PM
Just to check my sanity: there is no danger to running `tootctl accounts cull`, right?
#mastoadmin
#mastoadmin
It looks like the transition worked. Let’s see if renewal is success in three days time. I’ve also transitioned one of my backup mail servers to a short-lived cert … 🤞 #selfhosting
December 4, 2025 at 7:11 PM
It looks like the transition worked. Let’s see if renewal is success in three days time. I’ve also transitioned one of my backup mail servers to a short-lived cert … 🤞 #selfhosting