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Catherine Greenhill

@catherinemaths.bsky.social

Mathematician, mum, vegan. I live, work on Gweagal, Bedegal land. Australia tortures refugees. She/her.

102 Followers  |  37 Following  |  15 Posts  |  Joined: 02.08.2023  |  1.9009

Latest posts by catherinemaths.bsky.social on Bluesky


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Absolutely disgraceful from the Adelaide Festival.
I hope other participants reconsider their part in it.

08.01.2026 02:09 β€” πŸ‘ 402    πŸ” 151    πŸ’¬ 36    πŸ“Œ 27

THREAD. Every year, I tell the story of Ezell Gilbert. It's the story of one of the most remarkable cases in U.S. history, and you’ve probably never heard of it. The story of what the U.S. government did to him is vital for understanding the current moment we are in.

02.01.2026 18:37 β€” πŸ‘ 448    πŸ” 298    πŸ’¬ 5    πŸ“Œ 40
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Emma Johnston was a visionary scientist, environmentalist and leader, with an abiding hope for humanity The University of Melbourne Vice-Chancellor, who has died aged 52, was driven by a deep love of science and a desire to safeguard the planet’s future.

Devastating news that marine biologist, science communicator, and UniMelb VC Professor Emma Johnston has died after a short illness.
She really was an extraordinary and visionary leader, and I have no doubt she would have made a fine Chief Scientist one day.
theconversation.com/emma-johnsto...

29.12.2025 01:35 β€” πŸ‘ 98    πŸ” 35    πŸ’¬ 4    πŸ“Œ 8
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Every 5x6 Nonogram - Puzzarium Can you help solve all 90,305,804 5x6 nonogram puzzles? Every puzzle has a unique solution, requires no guessing, is true-to-size, and excludes rotations and reflections.

there's a project to solve all 5x6 nonograms by hand. its a fun pastime

05.12.2025 23:39 β€” πŸ‘ 10    πŸ” 2    πŸ’¬ 0    πŸ“Œ 2
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β€œWe’re taking this to court”: Doctors Are Fighting New Zealand’s Puberty Blocker Ban β€œOnly a small number of young people in Aotearoa are prescribed reversible pubertal suppression, but for those who need it, the negative impacts of this regulation will be huge.”

1. New Zealand doctors are officially suing to reverse the country's ban on puberty blockers for gender affirming care.

β€œThese regulations are being enacted based on politics, not on clinical evidence."

Subscribe to support our journalism.

www.erininthemorning.com/p/were-takin...

02.12.2025 17:56 β€” πŸ‘ 1916    πŸ” 498    πŸ’¬ 21    πŸ“Œ 27
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Why the UAE is wreaking havoc across the Arab world and Africa Meanwhile, Trump's international force for Gaza remains stalled

Today we're launching West Asia Focus, our new series looking past misleading headlines and lazy assumptions to tell the region's real stories.

First up is a look at the UAE, the region's "sub-imperial" wrecking ball.

www.deepcutnews.com/p/why-the-ua...

02.12.2025 22:00 β€” πŸ‘ 9    πŸ” 7    πŸ’¬ 1    πŸ“Œ 0
Screenshot of tweet from the ARC saying they’ll announce DECRA and LIEF outcomes on Tuesday 25th Nov.

Screenshot of tweet from the ARC saying they’ll announce DECRA and LIEF outcomes on Tuesday 25th Nov.

ARC says they’ll announce DECRA and LIEF outcomes tomorrow (Tuesday 25th Nov).

In recent times these announcements have been around 11am Canberra time. With 2 schemes on the same day, I assume they’ll announce one of them later in the day (probably DECRA first).

23.11.2025 23:40 β€” πŸ‘ 59    πŸ” 26    πŸ’¬ 7    πŸ“Œ 4

Congratulations Nalini!

19.11.2025 06:56 β€” πŸ‘ 9    πŸ” 0    πŸ’¬ 0    πŸ“Œ 4
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Nalini Joshi named 2025 NSW Scientist of the Year Trailblazing mathematician Professor Nalini Joshi has been awarded the top scientific accolade in NSW for 2025.

An article from @sydney.edu.au about today’s significant event #NSWPremiersPrizes news-opinion.sydney.edu.au/link/id/zzzz...

18.11.2025 21:37 β€” πŸ‘ 65    πŸ” 13    πŸ’¬ 15    πŸ“Œ 4
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Queer and Trans Mathematicians Queer and Trans Mathematicians

The 3rd Queer and Trans Mathematicians in Combinatorics (QTMC) conference starts today at UQ. Hope everyone has an interesting and enjoyable time!

queertransmath.com/n/QTMC-2025/

04.11.2025 21:41 β€” πŸ‘ 10    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

πŸ‘πŸ‘πŸ‘πŸ‘

14.10.2025 21:55 β€” πŸ‘ 6    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

check out this quanta article about our recent work! Eleon will present it at @focs2025.bsky.social this december

13.10.2025 14:50 β€” πŸ‘ 22    πŸ” 3    πŸ’¬ 1    πŸ“Œ 0
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The UK is implementing a nationwide trans bathroom ban without debate or even passing a law through parliament.

web.archive.org/web/20250905...

05.09.2025 08:34 β€” πŸ‘ 673    πŸ” 179    πŸ’¬ 38    πŸ“Œ 32
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New Fellow Prof Aidan Sims FAA (UOW) – 2025-26 Australian Mathematical Society President – is a maths trailblazer whose C*-algebra research advances quantum computing by modeling complex quantum systems. #FellowsAA

01.09.2025 21:42 β€” πŸ‘ 3    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0
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Prof Jessica Purcell FAA (Monash Uni) explores low-dimensional topology to enhance computer vision for autonomous vehicles & medical imaging. A math leader inspiring students! #FellowsAA

01.09.2025 21:37 β€” πŸ‘ 3    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Hind Khoudary reports that Israel is using explosive robots to demolish entire residential areas in Gaza city.

25.08.2025 07:21 β€” πŸ‘ 69    πŸ” 64    πŸ’¬ 1    πŸ“Œ 1
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Drowning Doesn’t Look Like Drowning Drowning is not the violent, splashing call for help that most people expect.

Thanks for the reminder @janemunday.bsky.social. Every summer, I repost this article DROWNING DOES NOT LOOK LIKE DROWNING. To date, I know of FOUR kids who were saved after someone who'd clicked on the link learnt how to spot actual drowning. Take time to read and pass on.

slate.com/technology/2...

19.06.2025 16:21 β€” πŸ‘ 5622    πŸ” 4821    πŸ’¬ 109    πŸ“Œ 352
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A fantastic first week of research collaboration at the "Combinatorics of McKay and Wormald" research program. www.matrix-inst.org.au/events/combi...

It's a real privilege to have both Brendan McKay and Nick Wormald presentβ€”two pioneers whose foundational work continues to shape the field.

12.06.2025 06:03 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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The Reasoning Void
Made with #python #numpy #sympy #matplotlib

10.06.2025 15:03 β€” πŸ‘ 68    πŸ” 6    πŸ’¬ 2    πŸ“Œ 0

There is a straight line from when people started decrying diversity statements as "political tests" to now replacing them with actual political tests.

30.05.2025 15:10 β€” πŸ‘ 15    πŸ” 4    πŸ’¬ 0    πŸ“Œ 0
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FINANCIAL REVIEW
Russia-Ukraine war
- Exclusive
Queensland firm probed over parts in Russian
'Frankenstein' missile
Andrew Tillett Foreign affairs, defence correspondent

l FINANCIAL REVIEW Russia-Ukraine war - Exclusive Queensland firm probed over parts in Russian 'Frankenstein' missile Andrew Tillett Foreign affairs, defence correspondent

So it’s a problem for conservative media when our missile parts are used by Russia but not by Israel???? You cannot make this shit up. It is so incredibly racist.

23.05.2025 04:55 β€” πŸ‘ 98    πŸ” 54    πŸ’¬ 2    πŸ“Œ 1
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The children of Gaza are starving to death | First Dog on the Moon Time is running out * Sign up here to get an email whenever First Dog cartoons are published * Get all your needs met at the First Dog shop if what you need is First Dog merchandise and prints Continue reading...

The children of Gaza are starving to death | First Dog on the Moon

22.05.2025 22:36 β€” πŸ‘ 49    πŸ” 36    πŸ’¬ 7    πŸ“Œ 4

. @jessielilley.bsky.social Got in before me! I'm launching a new independent media outlet with Antoun Issa, formerly of the Guardian and Al-Monitor.

If you want journalism that's not afraid of the Zionist lobby, consider becoming a founding subscriber: www.deepcutnews.com

15.05.2025 02:53 β€” πŸ‘ 57    πŸ” 17    πŸ’¬ 7    πŸ“Œ 3
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New State Department style guide requires trans people to be misgendered in all communications | Katelyn Burns Get more from Katelyn Burns on Patreon

Earlier today, I was leaked a copy of the Executive Secretariat Style Guide for the US State Department. The new guide included a new section requiring that all trans State employees must be misgendered in all official communications. www.patreon.com/posts/new-st...

14.05.2025 00:32 β€” πŸ‘ 1883    πŸ” 912    πŸ’¬ 90    πŸ“Œ 158
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Crazy that this is the first piece that decided to actually examine if Gaza β€œcost the Greens votes”. If the party ever wants to get outside the white enclaves of Sydney and Melbourne this kind of campaigning is what they need to do, and it pays off? www.abc.net.au/news/2025-05...

09.05.2025 07:56 β€” πŸ‘ 97    πŸ” 29    πŸ’¬ 4    πŸ“Œ 1
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Baraka Arrested for 'Trespassing' at Controversial Immigrant Detention Facility - Insider NJ Authorities with Homeland Securities Investigations at the ICE detention facility Delaney Hall this afternoon arrested Newark Mayor Ras Baraka

Y'all ICE just arrested Newark Mayor Ras Baraka for "trespassing" at one of their black site detention centers. www.insidernj.com/baraka-arres...

09.05.2025 19:29 β€” πŸ‘ 833    πŸ” 393    πŸ’¬ 34    πŸ“Œ 51

This is pretty much all we get from the media, a constant message of how extreme we are for wanting Australia to stop breaching international law and actually sanction Israel which is carrying out daily massacres and starving kids to death. None of our many other policies are mentioned.

07.05.2025 10:16 β€” πŸ‘ 68    πŸ” 17    πŸ’¬ 1    πŸ“Œ 0

It’s a very dark reflection on the state of Australian politics that Labor (including Albanese) seem more satisfied with defeating Bandt than Dutton.

Progressive voters are tricking themselves into thinking this election was a great result, but Australia’s centre of gravity keeps going right.

07.05.2025 22:35 β€” πŸ‘ 709    πŸ” 172    πŸ’¬ 67    πŸ“Œ 12
Text from article:

It’ll be years before we can fully account for what all of this is doing to students’ brains. Some early research shows that when students off-load cognitive duties onto chatbots, their capacity for memory, problem-solving, and creativity could suffer. Multiple studies published within the past year have linked AI usage with a deterioration in critical-thinking skills; one found the effect to be more pronounced in younger participants. In February, Microsoft and Carnegie Mellon University published a study that found a person’s confidence in generative AI correlates with reduced critical-thinking effort. The net effect seems, if not quite Wall-E, at least a dramatic reorganization of a person’s efforts and abilities, away from high-effort inquiry and fact-gathering and toward integration and verification. This is all especially unnerving if you add in the reality that AI is imperfect β€” it might rely on something that is factually inaccurate or just make something up entirely β€” with the ruinous effect social media has had on Gen Z’s ability to tell fact from fiction. The problem may be much larger than generative AI. The so-called Flynn effect refers to the consistent rise in IQ scores from generation to generation going back to at least the 1930s. That rise started to slow, and in some cases reverse, around 2006. β€œThe greatest worry in these times of generative AI is not that it may compromise human creativity or intelligence,” Robert Sternberg, a psychology professor at Cornell University, told The Guardian, β€œbut that it already has.”

(Katie's added note: the sentences about reorganization of abilities and telling fact from fiction have been highlighted.)

Text from article: It’ll be years before we can fully account for what all of this is doing to students’ brains. Some early research shows that when students off-load cognitive duties onto chatbots, their capacity for memory, problem-solving, and creativity could suffer. Multiple studies published within the past year have linked AI usage with a deterioration in critical-thinking skills; one found the effect to be more pronounced in younger participants. In February, Microsoft and Carnegie Mellon University published a study that found a person’s confidence in generative AI correlates with reduced critical-thinking effort. The net effect seems, if not quite Wall-E, at least a dramatic reorganization of a person’s efforts and abilities, away from high-effort inquiry and fact-gathering and toward integration and verification. This is all especially unnerving if you add in the reality that AI is imperfect β€” it might rely on something that is factually inaccurate or just make something up entirely β€” with the ruinous effect social media has had on Gen Z’s ability to tell fact from fiction. The problem may be much larger than generative AI. The so-called Flynn effect refers to the consistent rise in IQ scores from generation to generation going back to at least the 1930s. That rise started to slow, and in some cases reverse, around 2006. β€œThe greatest worry in these times of generative AI is not that it may compromise human creativity or intelligence,” Robert Sternberg, a psychology professor at Cornell University, told The Guardian, β€œbut that it already has.” (Katie's added note: the sentences about reorganization of abilities and telling fact from fiction have been highlighted.)

Bleak.

nymag.com/intelligence...

07.05.2025 13:49 β€” πŸ‘ 3225    πŸ” 971    πŸ’¬ 107    πŸ“Œ 99

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