Dave Richeson
@divbyzero.bsky.social
Mathematician. John J. & Ann Curley Chair in Liberal Arts at Dickinson College. Author of Tales of Impossibility and Euler's Gem. Coffee drinker. [Everything in the timeline before October 2024 was imported from my Twitter/X feed 2008-24.]
I've only played for two days, so I can't say much about strategy, but the first two digits can be helpful for photos that look like they're from around 2000.
November 11, 2025 at 12:03 AM
I've only played for two days, so I can't say much about strategy, but the first two digits can be helpful for photos that look like they're from around 2000.
Aaaaaah! This just goes to show that I need not dash off messages in a rush. Mary Ellen Boole was married to Charles Howard Hinton. Her sister was Alicia Boole Stott. She coined the term polytope.
November 9, 2025 at 6:53 PM
Aaaaaah! This just goes to show that I need not dash off messages in a rush. Mary Ellen Boole was married to Charles Howard Hinton. Her sister was Alicia Boole Stott. She coined the term polytope.
Ah, I didn't read this carefully enough. Mary Everest Boole, not Mary Ellen Boole. I confused the mother and the daughter.
November 9, 2025 at 6:24 PM
Ah, I didn't read this carefully enough. Mary Everest Boole, not Mary Ellen Boole. I confused the mother and the daughter.
Ah, I didn't read this carefully enough. Mary Everest Boole, not Mary Ellen Boole. I confused the mother and the daughter.
November 9, 2025 at 6:23 PM
Ah, I didn't read this carefully enough. Mary Everest Boole, not Mary Ellen Boole. I confused the mother and the daughter.
The inspiration for this approach was George Hart's string art activities: makingmathvisible.com/String-Rings...
Rings and Strings
makingmathvisible.com
November 9, 2025 at 4:39 PM
The inspiration for this approach was George Hart's string art activities: makingmathvisible.com/String-Rings...
Congratulations! Looks great!
November 6, 2025 at 12:56 PM
Congratulations! Looks great!
Yep, except the version I shared with my class is that every person is the same age.
October 30, 2025 at 8:31 PM
Yep, except the version I shared with my class is that every person is the same age.
Ha ha! I showed this to my colleague and I said the exact same thing!
October 29, 2025 at 2:56 AM
Ha ha! I showed this to my colleague and I said the exact same thing!
For the example, there are six possible hands
A♠, A♣
A♠, 2♣
A♠, 2♠
2♠, 2♣
2♠, A♣
A♣, 2♣
Answer to question 1 (have an ace): 1/5
Answer to question 2 (have ace of spades): 1/3
A♠, A♣
A♠, 2♣
A♠, 2♠
2♠, 2♣
2♠, A♣
A♣, 2♣
Answer to question 1 (have an ace): 1/5
Answer to question 2 (have ace of spades): 1/3
October 23, 2025 at 12:04 PM
For the example, there are six possible hands
A♠, A♣
A♠, 2♣
A♠, 2♠
2♠, 2♣
2♠, A♣
A♣, 2♣
Answer to question 1 (have an ace): 1/5
Answer to question 2 (have ace of spades): 1/3
A♠, A♣
A♠, 2♣
A♠, 2♠
2♠, 2♣
2♠, A♣
A♣, 2♣
Answer to question 1 (have an ace): 1/5
Answer to question 2 (have ace of spades): 1/3