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K. P. Hart

@hartkp.bsky.social

Ferdiglest

November 23, 2025 at 7:45 PM

K. P. Hart

@hartkp.bsky.social

Ferdiglest

November 20, 2025 at 9:57 PM

Reposted by K. P. Hart

Poldermanie

@poldermanie.bsky.social

Instant-blijmaker ontdekt: zelf krentenbollen maken. Zo feestelijk, een paar dagen zelfgemaakte krentenbollen in huis. Ik gebruikte dit recept en vooral het vormen van de bolletjes is cruciaal. Als dat misgaat zit je met compacte hompen en dat moet niet.
rutgerbakt.nl/brood-recept...

Krentenbollen – Recept

Krentenbollen van de bakker zijn al lekker, maar zelfgebakken zijn ze helemaal onweerstaanbaar. Met dit krentenbollen r...

rutgerbakt.nl

November 20, 2025 at 8:51 AM

Reposted by K. P. Hart

Private Eye Magazine

@privateeyenews.bsky.social

Do you rely on others for support?

From the new Private Eye, out now.

November 18, 2025 at 8:19 AM

Reposted by K. P. Hart

De Speld

@speld.nl

Te weinig water in Iran: kan AI dit oplossen?

speld.nl

November 16, 2025 at 9:02 AM

K. P. Hart

@hartkp.bsky.social

Wordle 1 610 4/6*

⬜⬜⬜⬜⬜
⬜⬜🟩⬜⬜
⬜🟩🟩🟩⬜
🟩🟩🟩🟩🟩

November 15, 2025 at 8:10 AM

Reposted by K. P. Hart

Boatman Cryptics

@boatmancryptics.co.uk

It's the Seasonal Reposting Competition! Repost this over the weekend, and on Sunday one lucky person will win a signed copy of one of my books. For you or the #crossword addict in your life: 50 fiendish @theguardian.com #puzzles and all the stories behind them:
boatmancryptics.co.uk/crossword-bo...

Boatman - the first 50 reportedly makes a great present or holiday read, exemplified by this image of the book opened to show the story behind the Shipping Forecast puzzle, on display on Brighton beach.

Reviewing Boatman - the first 50, Alan Connor (The Guardian's crossword editor and the brains behind many of BBC2’s quiz programs) says: "This is one to savour. Boatman's puzzles are witty and ingenious. It is an extraordinary pleasure to read how his unique mind works. The first 50 is a book I never knew I needed in my life. Gift it to yourself and to the word-lovers in yours".

Hugh Stephenson (Alan’s predecessor at The Guardian) says: "This is a unique book of crosswords" and Henry Morris: "a Boatman crossword is like a theme park. Each daunting line is a rollercoaster ... He scares you witless. But you can't wait to do it all over again".

Boatman - the second 50 contains another 50 puzzles from The Guardian, with five bonus puzzles previously only available online and including puzzles, solutions and the ideas and stories behind them, exemplified by this image of the book opened to show one of the stories, which is accompanied by a picture of a large cow.

Reviewing Boatman - the second 50, Gyles Brandreth says: "If you want a fiendish crossword, you want the best - which means you want Boatman, because he is the best" and Brian Bilston: "Cracking crosswords - each puzzle a delightful daily workout for the brain and a welcome tonic for the soul".

November 14, 2025 at 1:24 PM

K. P. Hart

@hartkp.bsky.social

Ik ga weer een HOVOcursus doen in 2026:
fa.ewi.tudelft.nl/~hart/onderw...

HOVO 2026: De Geschiedenis van het Integraalbegrip

fa.ewi.tudelft.nl

November 14, 2025 at 12:21 PM

K. P. Hart

@hartkp.bsky.social

Ferdiglest

November 7, 2025 at 11:22 PM

K. P. Hart

@hartkp.bsky.social

Pythagoras zoekt een nieuwe hoofdredacteur:
www.wiskgenoot.nl/index.php?pa...

Vacature hoofdredacteur Pythagoras

Pythagoras is een Nederlandstalig wiskundetijdschrift dat leerlingen van vwo en havo, en iedereen die jong van geest is, laat kennismaken met de leuke en uitdagende kanten van wiskunde. Het verschijnt...

www.wiskgenoot.nl

November 6, 2025 at 9:45 AM

K. P. Hart

@hartkp.bsky.social

#156

November 4, 2025 at 3:42 PM

K. P. Hart

@hartkp.bsky.social

Happy 350th birthday to the integral sign: fa.ewi.tudelft.nl/~hart/37/stu...

fa.ewi.tudelft.nl

October 29, 2025 at 11:04 AM

Reposted by K. P. Hart

Led By Donkeys

@ledbydonkeys.org

Farage: epic grifter

October 27, 2025 at 12:45 PM

Reposted by K. P. Hart

Yvonne Seale

@yvonneseale.bsky.social

A neat tool I just came across: Viabundus, a digital road map of northern Europe 1350-1650, that lets you calculate contemporary travel routes/times. In 1500, going Amiens → Köln by horse took almost 7 days and 13 toll payments.

#medievalsky

www.landesgeschichte.uni-goettingen.de/handelsstras...

October 24, 2025 at 10:58 PM

K. P. Hart

@hartkp.bsky.social

De verhouding tussen de afstanden Aarde-Zon en Aarde-Maan afschatten. Hoe deed Aristarchus dat?
pyth.eu/aristarchus

Pythagoras 65-1 | Aristarchus

Aristarchus van Samos bepaalde dat de verhouding tussen de afstanden Aarde-Zon en Aarde-Maan tussen 18 en 20 ligt. Hoe hij dat deed, gaan we hier zien.

pyth.eu

October 18, 2025 at 1:55 PM

K. P. Hart

@hartkp.bsky.social

Connected, locally connected, not path-connected?
Take a Bernstein set:
mathoverflow.net/questions/50...

Example of connected, locally connected metric space that isn't path-connected?

I tried to construct a reasonable example for someone, meshing together various sorts of dust, but I either failed or wound up with sets whose separation properties are far too delicate for the stu...

mathoverflow.net

October 11, 2025 at 3:37 PM

K. P. Hart

@hartkp.bsky.social

Ferdiglest

October 9, 2025 at 7:45 PM

Reposted by K. P. Hart

Peter Breedveld

@frontaalnaakt.nl

“Sommige mannen denken dus echt recht te hebben op het vrouwelijk lichaam en als ze het niet aan mogen raken, dan maken ze er een foto van om zich er dan samen met een roedel andere sukkels online op te verlekkeren.”

'Mannen die op deze sneue manier aan hun trekken komen, zijn afstotelijk'

'Het is vernederend om zonder toestemming op deze manier misbruikt te worden. Mannen die zich hieraan schuldig maken, zijn afstotelijk.'

www.linda.nl

October 8, 2025 at 12:18 PM

K. P. Hart

@hartkp.bsky.social

Alles wat ik tijdens de Nazomercursus 2025 verteld heb, en meer:
fa.ewi.tudelft.nl/~hart/onderw...

Nazomercurus 2025

fa.ewi.tudelft.nl

September 29, 2025 at 12:46 PM

K. P. Hart

@hartkp.bsky.social

Ahh, Samuel Pepys

Quite Interesting @qi.com · Sep 28

Samuel Pepys' diary entry for this day in 1665 recalls a stay at Mrs Clerke's house, where he left a surprise (or two) in the chimney...

A diary entry that reads 'So I to bed, and in the night was mightily troubled with a looseness (I suppose from some fresh damp linen that I put on this night), and feeling for a champer-pott, there was none, I having called the mayde up out of her bed, she had forgot I suppose to put one in there; so I was forced in this strange house to rise and shit in the chimney twice; and so to bed and was very well again.

September 28, 2025 at 6:13 PM

Reposted by K. P. Hart

The Guardian

@theguardian.com

Readers reply: What would happen if politicians actually answered the question?

The long-running series in which readers answer other readers’ questions tackles what might occur if our elected representatives responded directly to questions put to them …

www.theguardian.com

September 28, 2025 at 5:29 PM

Reposted by K. P. Hart

Wajahat Ali

@wajali.bsky.social

Jimmy Kimmel's Monologue now has 14.3 MILLION VIEWS on YouTube.

It would be a shame for you to share it

www.youtube.com/watch?v=c1tj...

Jimmy Kimmel is Back!

YouTube video by Jimmy Kimmel Live

www.youtube.com

September 24, 2025 at 7:37 PM

K. P. Hart

@hartkp.bsky.social

@nadineboke.bsky.social De tuin was nog dicht, maar hij lift er mooi bij.

(Op weg naar het CWI)

September 27, 2025 at 6:51 AM

Reposted by K. P. Hart

Internet Archive

@archive.org

Big news: Internet Archive Europe ( @internetarchive.eu ) has opened its new HQ in Amsterdam! 🎉 A home for preservation, access & shared cultural heritage.

Read coverage from @mariabustillos.com in Flaming Hydra: flaminghydra.com/freedom-and-...