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It begins with my phone, which it shouldn’t, because it begins on Shabbat (the Jewish Sabbath), and I shouldn’t be checking my phone (I shouldn’t even be awake now, after midnight). I most definitely shouldn’t be surrendering to my social-media addiction, checking the platform formerly known as Twitter even as I can, somehow, summon enough resistance to refrain from actually clicking and typing and posting. Which do I see first? In my memory, it’s a video clip (or is it a photograph?) of a white van (or is it a pick-up truck?), and I see men with guns (or are they rifles?), and the text that accompanies the image is no longer altogether complete, but I see “Sderot” (which I know to be a city near the Gaza border), and I see “terrorists,” and in that instant as I focus on my phone in New York I know (don’t ask me how) that this is no ordinary moment, and that utter devastation lies ahead.
This piece emerged from a memory-focused writing workshop conducted by Writing on the Wall.
The accompanying artwork to this piece was made by Dan Harris.
Dan is an artist based in New York, specializing in traditional Jewish papercutting artforms, reimagined for the modern era. An ardent Zionist, Dan seeks to use his Jewish art to bring joy, tzedakah and bitachon to all Jews, and to encourage those around him to do the same. He is an Art Editor and Illustrator for Green Golem: The Zionist Literary Magazine.
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I told my doctor I was seeing a Jewish man
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Happy Birthday Tate (for yesterday 27 July) – may you finally have peace and may the disgusting human filth at the University of Melbourne – who are entirely to blame for all of your suffering (including your painful death) ROT IN HELL!
Obituary: Harry Cohn 1940–2021
December 15, 2021
Harry Cohn
Harry Cohn was born on 27 July, 1940, in Bucharest, Romania, to Ionel and Perla Cohn (née Lachman). He died on 7 May, 2021, in Melbourne, Australia. Harry’s father Ionel was a mathematician, and also a music lover: Harry inherited from him his love for mathematics and music. His mother Perla was a home-maker.
Harry graduated with a PhD in mathematics from the University of Bucharest, in 1966, specialising in Probability Theory, under the supervision of Gheorghe Mihoc.
Harry worked at the Institute of Mathematics of the Romanian Academy of Sciences from 1963 to 1970; at the Technion – Israel Institute of Technology in Haifa, Israel, from 1970 to 1974; at Haifa University during 1974–1975; and at the Australian National University in Canberra from 1975 to 1978. Harry joined the Statistics Department at the University of Melbourne, Australia, as a Reader in 1978, and worked there until his retirement in 2003. He was the Head of the Department from 1989 to 1992.
Harry was elected a Fellow of the Institute of Mathematical Statistics and was a Member of the American Mathematical Society.
Harry was a true mathematician—inspired and inspiring—who lived and breathed mathematics. He would engage with a problem constantly until he managed to solve it, usually in a new and innovative way. Mariana, his wife, tells that once he came home and told her, “We are going out to celebrate.” At the restaurant, Mariana asked, “What is it that we are celebrating?” Harry said that he had solved an important problem, proceeding to give her the mathematical details. Not mathematically trained, Mariana had no idea what he was talking about, yet she and their daughters—as well as people around them—could easily pick up his excitement about the maths. Harry was a very passionate man: he was passionate about maths, about current affairs, about politics, about his colleagues and friends, and about his family. He was also a champion table-tennis player, and won many medals in Israel representing his university in competitions.
Harry introduced and taught modern probability to many students at the University of Melbourne. Many of those went on to themselves become academics and professors in mathematics, statistics and even philosophy. I was Harry’s student from 1979 to 1983 for both MSc and PhD, and later, his colleague.
Harry was very knowledgeable in probability and random processes, including such fields as branching processes, simulated annealing, Markov chains, Markov processes, products of random matrices with connections to ergodic properties, and so on. Some of Harry’s important contributions lie in the theory of Markov chains, where he obtained deep results by bringing in the tools of modern probability.
His influential work on non-homogeneous Markov chains and Simulated Annealing, amongst others, were praised by Sir John Kingman in a letter he wrote to Harry in 1998.
Harry was the initiator and organiser of the commemorative conference for Wolfgang Doeblin, who died at the age of 25 in World War 2, and he edited a published collection of papers, Doeblin and Modern Probability, Providence, RI, 1993.
Harry stood tall amongst the best, attracting many leading researchers in Probability from overseas to visit what was then the Statistics Department at the University of Melbourne, give lectures and collaborate in research. This created a buzz of creativity and excitement. Notable visitors included SØren Asmussen, Kai Lai Chung, Peter Jagers, Marius Iosifescu, Harry Kesten, and Olle Nerman.
Australian statistician Terry Speed wrote to me: “Although I have had no contact with Harry for a very long time, nevertheless, I feel this as a great loss. He was a brilliant man.” Many of those who knew Harry share exactly the same sentiment; he was a brilliant mathematician and a good man, indeed. He will be missed by all of us who knew him, learnt from him, were inspired by him, worked with him and befriended him.
Harry is survived by his wife Mariana, two daughters and four grandchildren.
Mariana Cohn, Yael Cohn, Viviana Cohn, and Bill Lloyd-Smith helped with information about Harry.
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Written by Fima Klebaner, Monash University, Melbourne, Australia.
This obituary first appeared in the November 2021 issue of the Australian Mathematical Society’s Gazette.
https://imstat.org/2021/12/15/obituary-harry-cohn-1940-2021/?fbclid=IwY2xjawESGsFleHRuA2FlbQIxMQABHeiEYqx5U3B5uLMzs8xvbmuIPDqbP4zdPmqYFdC5MZCG3_L19x19SVZ0Ug_aem_IrC79xjCGYowZW9J1oJPdg
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