Catherine Greenhill
@catherinemaths.bsky.social
Mathematician, mum, vegan. I live, work on Gweagal, Bedegal land. Australia tortures refugees. She/her.
Reposted by Catherine Greenhill
Researchers in mathematics at the graduate level or above are welcome to join AHM. Please read our founding statement and, if it resonates with you, consider joining!
docs.google.com/forms/d/e/1F...
docs.google.com/forms/d/e/1F...
The Association for Human Mathematics - Membership Statement
The Association for Human Mathematics (AHM) protects mathematics as a human endeavor against the threat of artificial intelligence. We work to maintain the independence of the mathematical community f...
docs.google.com
September 9, 2026 at 10:15 PM
Researchers in mathematics at the graduate level or above are welcome to join AHM. Please read our founding statement and, if it resonates with you, consider joining!
docs.google.com/forms/d/e/1F...
docs.google.com/forms/d/e/1F...
Reposted by Catherine Greenhill
I'm proud to announce the creation of the Association for Human Mathematics. We aim to protect mathematics as a human endeavour against the threat of AI and to maintain the independence of the mathematical community from corporate interests.
www.ahmath.org
www.ahmath.org
AHM
www.ahmath.org
September 9, 2026 at 10:15 PM
I'm proud to announce the creation of the Association for Human Mathematics. We aim to protect mathematics as a human endeavour against the threat of AI and to maintain the independence of the mathematical community from corporate interests.
www.ahmath.org
www.ahmath.org
Reposted by Catherine Greenhill
Please sign @goodlawproject.org's demand for a public inquiry into the media's role in Jason Arday's death ->
goodlawproject.org/petition/jas...
goodlawproject.org/petition/jas...
Jason Arday: Demand a public inquiry now | Good Law Project
Commission an immediate public inquiry into how to ensure a responsible press given its contribution to Dr Arday’s tragic death.
goodlawproject.org
August 17, 2026 at 8:52 PM
Please sign @goodlawproject.org's demand for a public inquiry into the media's role in Jason Arday's death ->
goodlawproject.org/petition/jas...
goodlawproject.org/petition/jas...
Reposted by Catherine Greenhill
🚨JUST IN🚨
A NSW Supreme Court judge has delivered a sweeping rejection of the IHRA definition of antisemitism, saying it is 'detached from reality'.
www.deepcutnews.com/p/nsw-suprem...
A NSW Supreme Court judge has delivered a sweeping rejection of the IHRA definition of antisemitism, saying it is 'detached from reality'.
www.deepcutnews.com/p/nsw-suprem...
NSW Supreme Court criticises IHRA definition as 'detached from reality'
Justice Fagan says Zionism 'open to criticism' in decision on graffiti case
www.deepcutnews.com
August 18, 2026 at 12:23 AM
🚨JUST IN🚨
A NSW Supreme Court judge has delivered a sweeping rejection of the IHRA definition of antisemitism, saying it is 'detached from reality'.
www.deepcutnews.com/p/nsw-suprem...
A NSW Supreme Court judge has delivered a sweeping rejection of the IHRA definition of antisemitism, saying it is 'detached from reality'.
www.deepcutnews.com/p/nsw-suprem...
Reposted by Catherine Greenhill
We expected at least one story or opinion piece, c’mon.
P.S He’s the only person jailed over war crimes in Afghanistan, and the Attorney General can grant him parole.
P.S He’s the only person jailed over war crimes in Afghanistan, and the Attorney General can grant him parole.
August 12, 2026 at 3:00 AM
We expected at least one story or opinion piece, c’mon.
P.S He’s the only person jailed over war crimes in Afghanistan, and the Attorney General can grant him parole.
P.S He’s the only person jailed over war crimes in Afghanistan, and the Attorney General can grant him parole.
Reposted by Catherine Greenhill
OpenAI released a three-page manuscript it says GPT-5.6 Sol Ultra generated to settle the Cycle Double Cover Conjecture, but with no machine-checked proof, mathematicians are treating it as an unverified claim, not a breakthrough.
OpenAI says its AI proved a 50-year-old math conjecture -- mathematicians want the receipts
OpenAI released a three-page manuscript it says GPT-5.6 Sol Ultra generated to settle the Cycle Double Cover Conjecture, but with no machine-checked proof, mathematicians are treating it as an unverified claim, not a breakthrough.
groundtruth.day
July 11, 2026 at 2:01 AM
OpenAI released a three-page manuscript it says GPT-5.6 Sol Ultra generated to settle the Cycle Double Cover Conjecture, but with no machine-checked proof, mathematicians are treating it as an unverified claim, not a breakthrough.
Reposted by Catherine Greenhill
The NSW transport department is warning that the growth of data centres is a challenge to the logistics sector for land in Sydney, which could push up prices people pay if products have to be located further away from where people live. www.theguardian.com/australia-ne...
Rapid demand for AI datacentres in Australia could stoke inflation, experts warn – and crowd out land for housing
Calls are growing for new datacentre approvals to be halted until stronger protections are considered
www.theguardian.com
July 1, 2026 at 7:50 PM
The NSW transport department is warning that the growth of data centres is a challenge to the logistics sector for land in Sydney, which could push up prices people pay if products have to be located further away from where people live. www.theguardian.com/australia-ne...
Reposted by Catherine Greenhill
Since September I've been working with an international group to develop what we hope can be a response from the mathematics community to artificial intelligence in maths. The Leiden Declaration is now posted and open for signatures: https://leidendeclaration.ai/ #leidendeclaration
Leiden Declaration on Artificial Intelligence and Mathematics
This declaration calls for action to address the challenges posed by the use of artificial intelligence within mathematics research.
leidendeclaration.ai
June 2, 2026 at 8:19 AM
Since September I've been working with an international group to develop what we hope can be a response from the mathematics community to artificial intelligence in maths. The Leiden Declaration is now posted and open for signatures: https://leidendeclaration.ai/ #leidendeclaration
Reposted by Catherine Greenhill
‘Too pretty to do math’? Here’s the real reason girls aren’t choosing to study maths
theconversation.com/too-pretty-t...
theconversation.com/too-pretty-t...
‘Too pretty to do math’? Here’s the real reason girls aren’t choosing to study maths
Research has consistently shown girls are just as capable of succeeding in maths as boys.
theconversation.com
June 21, 2026 at 11:54 PM
‘Too pretty to do math’? Here’s the real reason girls aren’t choosing to study maths
theconversation.com/too-pretty-t...
theconversation.com/too-pretty-t...
Reposted by Catherine Greenhill
IF YOU SEE THIS CLOSE THE TAB IMMEDIATELY
this is a trick to install malware on your machine. it is not a real captcha system.
this is a trick to install malware on your machine. it is not a real captcha system.
June 20, 2026 at 1:20 AM
IF YOU SEE THIS CLOSE THE TAB IMMEDIATELY
this is a trick to install malware on your machine. it is not a real captcha system.
this is a trick to install malware on your machine. it is not a real captcha system.
Reposted by Catherine Greenhill
We have to stop this immediately. The entire purpose of this LLM farce is to totally invalidate knowledge itself, to destroy information once and for all as a tool to hold power to account: when truth can’t be validated because any image or story might be generated by a bot.
AI has started blocking the Wayback Machine from chronicling the web. Considering that nearly 40% of websites disappear after 10 years, this will enforce a giant loss in collective memory.
AI’s biggest casualty could be history itself
The Internet Archive is a vital resource that has helped the search for truth in more than one global event, writes Anthony Cuthbertson, but it is in danger of becoming the latest collateral damage of...
www.the-independent.com
June 21, 2026 at 2:45 AM
We have to stop this immediately. The entire purpose of this LLM farce is to totally invalidate knowledge itself, to destroy information once and for all as a tool to hold power to account: when truth can’t be validated because any image or story might be generated by a bot.
Reposted by Catherine Greenhill
AI has started blocking the Wayback Machine from chronicling the web. Considering that nearly 40% of websites disappear after 10 years, this will enforce a giant loss in collective memory.
AI’s biggest casualty could be history itself
The Internet Archive is a vital resource that has helped the search for truth in more than one global event, writes Anthony Cuthbertson, but it is in danger of becoming the latest collateral damage of...
www.the-independent.com
June 20, 2026 at 1:22 PM
AI has started blocking the Wayback Machine from chronicling the web. Considering that nearly 40% of websites disappear after 10 years, this will enforce a giant loss in collective memory.
Reposted by Catherine Greenhill
A Macquarie University lecturer in Middle East politics who has been the target of a pro-Israel media campaign claims to have been filmed, followed and threatened on campus.
www.deepcutnews.com/p/macquarie-...
www.deepcutnews.com/p/macquarie-...
Macquarie academic claims she was threatened, followed after criticising Israel
Man filmed lecture and told her 'I can find you', Macquarie University's Dr Jumana Bayeh says
www.deepcutnews.com
June 22, 2026 at 9:46 PM
A Macquarie University lecturer in Middle East politics who has been the target of a pro-Israel media campaign claims to have been filmed, followed and threatened on campus.
www.deepcutnews.com/p/macquarie-...
www.deepcutnews.com/p/macquarie-...
Reposted by Catherine Greenhill
1. She changed her ID to comply with Kansas’ new anti-trans law. Now, the state wants to put her in jail for having an inaccurate license.
Kris Ripper is being charged with driving with an invalid license—a class B misdemeanor—after a cop refused to believe the ID the state forced on her was valid.
Kris Ripper is being charged with driving with an invalid license—a class B misdemeanor—after a cop refused to believe the ID the state forced on her was valid.
She Changed Her ID to Comply with Kansas’ New Anti-Trans Law. Now, the State is Trying to Put Her in Jail for Having an 'Inaccurate' License.
A Kansas trans woman is being charged with driving with an invalid license after a police officer refused to believe the license the state is forcing her to carry was valid. She won’t be the last.
www.transiticsnews.com
June 23, 2026 at 2:41 PM
1. She changed her ID to comply with Kansas’ new anti-trans law. Now, the state wants to put her in jail for having an inaccurate license.
Kris Ripper is being charged with driving with an invalid license—a class B misdemeanor—after a cop refused to believe the ID the state forced on her was valid.
Kris Ripper is being charged with driving with an invalid license—a class B misdemeanor—after a cop refused to believe the ID the state forced on her was valid.
Reposted by Catherine Greenhill
Good thread. This is the one that makes me see red whenever I hear it, and I hear it a surprising lot.
6- Exceptionalism. "I know this can be dangerous for people in general, but I know how to use it carefully."/"I know how to verify every output, and I am not deskilling myself." How do you know? Also, if you acknowledge the dangers to others, what example are you setting by talking up your use?
>>
>>
June 24, 2026 at 3:10 PM
Good thread. This is the one that makes me see red whenever I hear it, and I hear it a surprising lot.
Reposted by Catherine Greenhill
Not in our Name! 💗🗣️
We are women from every corner of society, united in support of the trans community.
We refuse to allow our experiences to be weaponised against other women and marginalized people. We refuse to stay silent.
READ AND SIGN our open letter👇
#NotInOurNameAus #NOINAus
We are women from every corner of society, united in support of the trans community.
We refuse to allow our experiences to be weaponised against other women and marginalized people. We refuse to stay silent.
READ AND SIGN our open letter👇
#NotInOurNameAus #NOINAus
Not in our Name Women Australia
We are women from every corner of society - mothers, daughters, friends, sisters, grandmothers, partners, colleagues, caregivers and leaders - united in rejecting the discrimination and exclusion of t...
actionnetwork.org
May 28, 2026 at 1:35 AM
Not in our Name! 💗🗣️
We are women from every corner of society, united in support of the trans community.
We refuse to allow our experiences to be weaponised against other women and marginalized people. We refuse to stay silent.
READ AND SIGN our open letter👇
#NotInOurNameAus #NOINAus
We are women from every corner of society, united in support of the trans community.
We refuse to allow our experiences to be weaponised against other women and marginalized people. We refuse to stay silent.
READ AND SIGN our open letter👇
#NotInOurNameAus #NOINAus
Reposted by Catherine Greenhill
"In the space of a few years, the UK has moved from a broadly inclusive status quo to being the most aggressively anti-trans developed democracy in the world."
If you want to read up on just how bad things have gotten in the UK, read this article.
If you want to read up on just how bad things have gotten in the UK, read this article.
the anti-trans bathroom ban is very bad—it's also a sign uk democracy is failing
my latest with @liberalcurrents.com
www.liberalcurrents.com/the-end-of-t...
my latest with @liberalcurrents.com
www.liberalcurrents.com/the-end-of-t...
The End of Trans Rights In the UK Is the Start Of Democratic Collapse
It's never just one minority.
www.liberalcurrents.com
May 24, 2026 at 8:35 PM
"In the space of a few years, the UK has moved from a broadly inclusive status quo to being the most aggressively anti-trans developed democracy in the world."
If you want to read up on just how bad things have gotten in the UK, read this article.
If you want to read up on just how bad things have gotten in the UK, read this article.
Reposted by Catherine Greenhill
The computer program Lean might revolutionize mathematics. It has verified more than a quarter of a million theorems and led to new insights. But might it also erode conceptual and ideological diversity?
www.quantamagazine.org/in-math-rigo...
www.quantamagazine.org/in-math-rigo...
March 29, 2026 at 3:46 PM
The computer program Lean might revolutionize mathematics. It has verified more than a quarter of a million theorems and led to new insights. But might it also erode conceptual and ideological diversity?
www.quantamagazine.org/in-math-rigo...
www.quantamagazine.org/in-math-rigo...
Reposted by Catherine Greenhill
Australian public servants have warned that new guidelines conflating criticism of Israel and antisemitism will undermine national security and the independence of the public service.
www.deepcutnews.com/p/antisemiti...
www.deepcutnews.com/p/antisemiti...
'Antisemitism' directive exposes Australia to Israeli interference, public servants warn
Public service adoption of IHRA definition may endanger national security
www.deepcutnews.com
March 29, 2026 at 9:39 PM
Australian public servants have warned that new guidelines conflating criticism of Israel and antisemitism will undermine national security and the independence of the public service.
www.deepcutnews.com/p/antisemiti...
www.deepcutnews.com/p/antisemiti...
Reposted by Catherine Greenhill
Because we care deeply about international mathematics and its mathematicians, we must recognize the threat to both that the upcoming ICM poses.
Please read and consider signing:
Move the 2026 ICM out of the United States […]
Please read and consider signing:
Move the 2026 ICM out of the United States […]
Original post on mathstodon.xyz
mathstodon.xyz
March 15, 2026 at 4:54 PM
Because we care deeply about international mathematics and its mathematicians, we must recognize the threat to both that the upcoming ICM poses.
Please read and consider signing:
Move the 2026 ICM out of the United States […]
Please read and consider signing:
Move the 2026 ICM out of the United States […]
Reposted by Catherine Greenhill
Spoke to the Guardian about the idea of quitting LLMs for climate:
-“I see this all as very much part of the tactic of trying to embed these systems into society and instil dependency in a fashion similar to the growth of single-use plastics in the 1970s.”
www.theguardian.com/australia-ne...
-“I see this all as very much part of the tactic of trying to embed these systems into society and instil dependency in a fashion similar to the growth of single-use plastics in the 1970s.”
www.theguardian.com/australia-ne...
March 16, 2026 at 7:30 AM
Spoke to the Guardian about the idea of quitting LLMs for climate:
-“I see this all as very much part of the tactic of trying to embed these systems into society and instil dependency in a fashion similar to the growth of single-use plastics in the 1970s.”
www.theguardian.com/australia-ne...
-“I see this all as very much part of the tactic of trying to embed these systems into society and instil dependency in a fashion similar to the growth of single-use plastics in the 1970s.”
www.theguardian.com/australia-ne...
Reposted by Catherine Greenhill
Absolutely disgraceful from the Adelaide Festival.
I hope other participants reconsider their part in it.
I hope other participants reconsider their part in it.
January 8, 2026 at 2:09 AM
Absolutely disgraceful from the Adelaide Festival.
I hope other participants reconsider their part in it.
I hope other participants reconsider their part in it.
Reposted by Catherine Greenhill
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.
January 2, 2026 at 6:36 PM
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.
Reposted by Catherine Greenhill
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...
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...
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.
theconversation.com
December 29, 2025 at 1:35 AM
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...
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...