Reposted by Rowena BallNalini Joshi @monsoon0.bsky.social · 30/09/2026I will be giving the 2026 Moyal Medal Lecture today at 18:30 at the Macquarie University campus 👉🏼 www.mq.edu.au/faculty-of-s... 273
Rowena Ball @rowena-mathscieng.bsky.social · 29/09/2026There are 3 left-spiral (sinistral) snails and 6 right-spiral (dextral) snails. Sinistral snails are rare and were called Kings. The setting is a Christian basilica, so... Chiral codes were used in Australian Indigenous societies too, centuries before chirality was 'discovered' by Western science. 062
Rowena Ball @rowena-mathscieng.bsky.social · 29/09/2026Or you could just get the kids to make your flyer 180
Rowena Ball @rowena-mathscieng.bsky.social · 27/09/2026Through the misty arches... across the 150th meridian east... what lies beyond? 130
Rowena Ball @rowena-mathscieng.bsky.social · 21/09/2026What are they talking about, Bob Katter has lurked there for about 100 years 020
Rowena Ball @rowena-mathscieng.bsky.social · 19/09/2026This organisation would be hugely strengthened by active inclusion of a greater diversity of global mathematics, mathematical cultures, and mathematicians. www.ahmath.orgahmath.orgAHM 051
Rowena Ball @rowena-mathscieng.bsky.social · 16/09/2026Seems the Institute for Heritage and Human Mathematics that I founded in July at a conference I convened will be sited at Bundaberg. Mathematicians made redundant by AI and students will get day jobs picking strawberries and evenings make and disseminate human mathematics together. #mathsky 010
Reposted by Rowena BallRailmaps @railmaps.com.au · 14/09/2026The Moon and Venus are dancing tonight. 2828
Rowena Ball @rowena-mathscieng.bsky.social · 10/09/2026The old answer to that old question was that mathematics is the part of physics where the experiments are cheap. So mathematics used to be good value. Now we hear that a mathematics experiment costs 22 million dollars. Ha! Maybe the roles are now reversed! 3112
Rowena Ball @rowena-mathscieng.bsky.social · 06/09/2026Get a life, ye AI losers. Give the real world a go. One student included "Samples of my conversations with Claude" in their honours thesis. *Honestly*. Gen-AI riddled grant applications and manuscripts to review and theses to mark and unsolicited CVs have become a torrential deluge. Heaven help us! 130
Rowena Ball @rowena-mathscieng.bsky.social · 06/09/2026O happy AI-free afternoon! O the treasures at the Lifeline Bookfair! What a delightful swag to come home with! There are literally barns full of books, and crowds of families and kids and loners and oldies buying them. No-one here is crafting AI prompts. www.lifelinecanberra.org.au/books/bookfa...lifelinecanberra.org.auLifeline Canberra - Lifeline Canberra Bookfair 060
Reposted by Rowena BallRowena Ball @rowena-mathscieng.bsky.social · 05/09/2026And socks. Ohh those all-male 4th year and graduate maths and physics classes! They stink! Don't those dudes ever change their socks or wash their feet? Or wash anything? No wonder the women avoid or drop out. 011
Reposted by Rowena BallBen Eltham @beneltham.bsky.social · 02/09/2026AI is going to be one of the biggest issues in higher education in coming months. There is zero doubt vice-chancellors want to automate their teaching www.theguardian.com/australia-ne...theguardian.com‘We have had enough’: thousands of University of Sydney staff walk off the job over AI and job securityHundreds of university staff were stationed at picket lines, calling for stronger protections around the use of AI 55618
Rowena Ball @rowena-mathscieng.bsky.social · 31/08/2026Excuse me, have we e-met? Ha! Thanks for the idea! To be deployed on all the whitesplainers, mansplainers, white supremacists, and the "I'm-not-a-mathematician-but-"s and other major and minor annoyances who spam my emails and msgs 010
Rowena Ball @rowena-mathscieng.bsky.social · 30/08/2026Could get tricky. If we are visited by aliens from another galaxy who are made of L-ribonucleotides and D-amino acids, then pub menus would have to include 'OC' (opposite chirality) as well as 'V' (vegan) and 'GF' (gluten-free) options on their menus, otherwise the aliens would starve. 110
Rowena Ball @rowena-mathscieng.bsky.social · 30/08/2026This researcher calls it the old gish-gallop 020
Reposted by Rowena BallRailmaps @railmaps.com.au · 27/08/2026I needn't have worried. Upon arrival, this beauty was sitting in the dock platform. I got off the South Mail (at right) and snapped this shot before boarding the Tocumwal connection which that that day was to be run by 2-car diesel set 606/706. 43 years ago today, August 27 1983 6 of n 2221
Rowena Ball @rowena-mathscieng.bsky.social · 26/08/2026Shingles vaccine reduces the risk of shingles, too! Get the vaccine if you are eligible! Miserable, unpleasant disease for the unvaccinated – it attacked my poor colleague, who suffered terribly for months and it did irreversible damage to their eyes. Get the vaccine if you can! 163
Rowena Ball @rowena-mathscieng.bsky.social · 24/08/2026How to lay rails across the vast Murrumbidgee flood plain: Fell the enormous river red gums along the surveyed route as you go, and rearrange the logs into a trestle viaduct. The sleepers and some cross-timbers are sawn, but of outsized dimension! The rails are still in place. #railways #heritage 120
Rowena Ball @rowena-mathscieng.bsky.social · 21/08/2026Speaking of which, it should also be career-ending to repeat the colonial lie that "Aborigines could only count up to three" (or 4, or 5, or variants of that lie). That always was deliberate misinformation that became embedded and to this day it is repeated – often in front of Indigenous students. 060
Rowena Ball @rowena-mathscieng.bsky.social · 17/08/2026We let our mathematics leak out all over campus at ANU! 1103
Reposted by Rowena BallProfessor Asha Rao @asharao.bsky.social · 16/08/2026The moon and Venus in the western sky (right) just now, from my backyard. I zoomed out to get the shot on the right. Is that Spica from the Constellation Virgo on the upper right? If no, than what? #nightsky #earthsky 052
Rowena Ball @rowena-mathscieng.bsky.social · 16/08/2026Nalini is more renowned and accomplished than anyone who was in that Sydney Town Hall. Shame-job, @australianmuseum.bsky.social and Eureka prize organisers. #racism #EurekaPrize 131
Reposted by Rowena BallAthene Donald @athenedonald.bsky.social · 14/08/2026The University of Cambridge was shockingly slow to admit women to degrees: not till 1948. But briefly, from 1904-7, those who passed the exams could get a degree from Trinity College Dublin: Steamboat Ladies #womeninSTEM #histsci occamstypewriter.org/athenedonald... 022
Reposted by Rowena BallNalini Joshi @monsoon0.bsky.social · 13/08/2026“The role of the @arc-gov-au.bsky.social is to give our best researchers the opportunity to follow their best ideas…” ministers.education.gov.au/clare/arc-25...ministers.education.gov.au 111
Reposted by Rowena BallJustin on eurostar @eurostarjustin.bsky.social · 13/08/2026A bike ride before work. It was already 25⁰ when I got back just after 10am. It's going to be another scorching day on the iron road. 0351
Rowena Ball @rowena-mathscieng.bsky.social · 11/08/2026Aboriginal and Torres Strait Islander peoples were explicitly excluded from the census until 1971. I'll give you three guesses as to who will be fined most, be unable to pay the fines, then be criminalized, for not completing the census and you will be right first guess. 020
Rowena Ball @rowena-mathscieng.bsky.social · 11/08/2026Census night. For the first 70 years of the census 'Aboriginal natives should not be counted'. In ~1650 Chief Red Kangaroo of the Gamilarray-speaking Gunn-e-darr people, carried out a full census of his tribe. Based on the results, he began a successful campaign to unify all the Gamilarray tribes 142
Rowena Ball @rowena-mathscieng.bsky.social · 11/08/2026Who? Has anyone ever heard of this NZ PM? Did Peter Dutton get a name change and go to ground across the ditch? Where is Jacinda? 110
Rowena Ball @rowena-mathscieng.bsky.social · 10/08/2026Very true, but it gets worse. The flows of knowledge... wilful interruption, suppression or destruction of those flows never ends well. The consequences are not pretty. I gave a talk on this coupla weeks ago 000
Reposted by Rowena BallJodie Bradby @jodiebradby.bsky.social · 09/08/2026Worried about H5 in Australia? This is an interesting dataset. 031
Rowena Ball @rowena-mathscieng.bsky.social · 08/08/2026😀'many mathematicians want to work with AI, others prefer to stay “AI vegetarian” or even “AI vegan.”' Bit ironic that those many mathematicians will be "AI paleo"! Beware all ye "keto" mathematicians tho – the keto diet is notorious for unintended and unforeseen consequences and side-effects! 010
Rowena Ball @rowena-mathscieng.bsky.social · 06/08/2026Too right. The snails in my letter box ate a piece of the password in my census letter. Is there a question about snails in the form? Do the household snails not want to be counted? Apparently you can flag down a wandering ABS field officer who will be carrying a yellow satchel and request a form. 030
Rowena Ball @rowena-mathscieng.bsky.social · 05/08/2026Just a rake of three Abt rack engines steaming through the Tassie wilderness, nothing special. #trains #railways 081
Rowena Ball @rowena-mathscieng.bsky.social · 04/08/2026When did school mathematics become re-branded as 'numeracy'? Why? Was it just because of some sort of imperfect rhyming ring with 'literacy'? #mathematics #mathsky 140
Rowena Ball @rowena-mathscieng.bsky.social · 04/08/2026The pleasure was all ours! Isn't it great to have maths visitors? The conference was a huge, exciting success – thanks entirely to Parisa and the other brilliant, generous invited speakers and the students! #mathematics 010
Rowena Ball @rowena-mathscieng.bsky.social · 02/08/2026'Managerial roles such as “associate pro-vice chancellor for education and student experience” have been created' These useless overpaid appointments are made at Oz universities. They are an insult to research and teaching academics at the coalface, who DO student education and experience every day 010
Rowena Ball @rowena-mathscieng.bsky.social · 31/07/2026More little fractal frosticles on the windscreen this morning, but fog has descended so not as sparkly as yesterday 030
Rowena Ball @rowena-mathscieng.bsky.social · 31/07/2026Oho, something new on an Aussie country pub menu! Galway Spice Bag: fried chicken, chips, McDonnell's curry sauce, onion, capsicum, Chinese sauce. So of course I absolutely had to order this culinary marvel! 120
Reposted by Rowena BallABC News Australia @news.abc.net.au · 29/07/2026Victorian cult and fringe group inquiry recommends criminalising group coercionabc.net.auCult inquiry recommends outlawing coercive control in groupsA Victorian inquiry into the recruitment methods and impacts of cults and organised fringe groups is recommending world-leading laws against group coercive control. 0165
Rowena Ball @rowena-mathscieng.bsky.social · 28/07/2026Before colonisation Aboriginal children played and 'lived' mathematics brilliantly. This account is from the early 1900s: "In far north Qld the Aboriginal youngsters would make their own fun. After making a dense black column of smoke, girls and boys would ‘spear’ long leaves into it. 1/n #mathsky 120
Rowena Ball @rowena-mathscieng.bsky.social · 27/07/2026Nearly jumped out me skin, office desk phone suddenly shrieked at me just now! Haven't heard a peep from it for years, nor used it, and it is covered in dust. Presumably the university just keeps paying a provider for this antiquated landline service that no-one uses. 030
Rowena Ball @rowena-mathscieng.bsky.social · 26/07/2026Shame-job, International Congress of Mathematicians. The organisers are a bloody disgrace. Did they not screen, train, and brief their security contractor? Is the ICM, and the IMU, completely clueless on how corrosive such continual aggressions are to the victims? #mathsky #racism #whitesupremacy 082
Rowena Ball @rowena-mathscieng.bsky.social · 20/07/2026Train getting longer as it goes along! Love it! Presumably the train would have to get shorter as it goes in the opposite direction, as it drops the empties off. 110
Rowena Ball @rowena-mathscieng.bsky.social · 20/07/2026`But young women may still get written out of a research team’s endeavours, when a male student is allowed to lay claim to a woman’s research – and which historian of science will be able to track that down, by whatever means?' You're on! 020
Reposted by Rowena BallNalini Joshi @monsoon0.bsky.social · 18/07/2026The ceiling is almost equally beautiful 061
Rowena Ball @rowena-mathscieng.bsky.social · 18/07/2026Another warm tropical winter morning in Canberra. Great fun it were, thoughtlessly stepping barefoot down the back to put the recycling out. 120