*A little over a year since his passing, Adam Ostaszewki, Professor of Mathematics at LSE, remembers Anatole Beck, our friend and colleague, with input from Steve Alpern and Kenneth Binmore. They have also put together a bibliography of Anatole’s work.*

Anatole Beck (1930-2014) was born in the Bronx, New York and educated at Stuyvesant High School, Brooklyn College and Yale University, where he was the pupil of Shizuo Kakutani. He then spent two postdoctoral years at Tulane and in Europe, before joining the faculty of UW-Madison in 1958. He left that post in 1973 to join the London School of Economics and Political Science (LSE) as a Professor of Mathematics. He had intended to stay at LSE, motivated by his outside interests in social policy, but was prevented from so doing by personal reasons, forcing him to leave after only two years’ service. Nevertheless, he maintained a close connection with colleagues at LSE, whilst continuing to cultivate his interest in social matters. The latter is well documented on his home page and resulted in a book (“The Knowledge Business __[1]__”) and a piece on the “Iron Law of Wages [2]”, testimony to his liberal Jewish upbringing.

His mathematical legacy has a very distinctive geometric nature; one sees similarities in approach across the three different fields which span his work: 1) probability, 2) topological dynamics and 3) search games, all of which were studied in tandem from the start of his academic career and are described below. These are complemented by three very insightful papers on the Steinhaus difference set, two from 1958 [3],[4] and one from 1984 [5] (and a lovely associated problem published in the American Mathematical Monthly (AMM) *— **Is it true that the interior of A – A either contains 0 or contains nothing? *[6]), as well as two papers in complex analysis (“On Rings On Rings” [7] and “A Theorem On Maximum Modulus” [8]). These articles demonstrate his inimitable style of expression and his excellent mathematics.

There are many memorable contributions in the AMM: on greedy algorithms for the removal of discs from a given area [9]; a fair division problem [10]; a marvellously intuitive account of the alternating series theorem in complex analysis” [11]. Added to this, in 1969 he authored “Excursions Into Mathematics” [12], jointly with Bleicher and Crowe. This collection of six essays “written for the layman to give him some feeling for what mathematics is and what mathematicians do” has stood the test of time: it was revived in 2000 as a Millennium Edition [13]. Its opening dedication speaks just as much about the book as the devotion of its authors:

*“To that fragile Hope of Peace unto which we, a desperate Mankind, have entrusted our Ancient Learning, our Dreams for the Future, and our very Lives.”*

Turning to his research, on the one side there are 15 papers he contributed on Probability in Banach Spaces, concerning himself with the Strong Law of Large Numbers (SLLN) and counterexamples to it. A memorable early contribution in this area (in 1962 [14]) is the establishment of an intimacy between SLLN and the geometry of a Banach space: SLLN holds in the space if the Banach space has a norm that is B-convex (Beck-convex), a notion studied later by Gilles Pisier (in connection with Rademacher type). (Anatole mentioned that here he had been outflanked by Pisier.) For background, see the paper by Bernard Maurey (2003) [15].

In the area of topological dynamics Beck studied over the course of some 10 papers* continuous flows in the plane*, integrating this work in his magnum opus in 1974: a book under the same title [16] in the Grundlehren der mathematischen Wissenschaften series. He was particularly proud of discovering the Paradox of the Hare and Tortoise (separately published in 1979 [17]), aptly named because of an analogy with Aesop’s fable (on account of constant naps, the Hare is doomed to lose against the Tortoise), as a companion to Zeno’s Achilles and the Tortoise (with a head start, the Tortoise is ever ahead when the fleet-footed Achilles arrives at its last location). Beck arranges for the Hare to pass (almost) every point of the racecourse at a speed higher than the Tortoise has at the same point, only to reach the finish line later.

His interest in Game Theory, mostly on different versions of the linear search problem (as well as with the game of Hex – later in 1991 [18]), dates back to 1964. Here, his collaborators include Donald Joseph Newman, Peter Warren, Vic Baston, Steve Alpern, as well as Steve’s PhD alumna Wei Shi Lim, and notably Beck’s son Micah Beck (on two papers, the first aptly called: “Son Of The Linear Search Problem” in 1984 [19], the other “The Revenge Of The Linear Search Problem” in 1992 [20]).

Perhaps most remarkable about the man is the measure of influence that his short, though sustained, contacts with LSE exerted on the School. He introduced Game Theory into the curriculum, and into the intellectual life-blood of LSE, drawing into the subject Kenneth Binmore, who in turn brought it to bear into Economic Theory. Separately, Beck’s topological dynamics motivated a new topological framework for regular variation in the works of Nick Bingham and Adam Ostaszewski. *Si monumentum requires, circumspice?*

In a live television and radio debate in 1996 on the future of the University of Wisconsin System, Dave Iverson asked, “How can we have quality education when our best teachers aren’t teaching full time?”

Anatole’s razor sharp reply:

“If professors didn’t have time to immerse themselves in their specialties, You would be teaching 20 hours a week of what you learned 30 years ago, just as we have in our high schools’’.

He will be remembered as a man dedicated to humanity. Of course, to his friends he had a huge and generous heart. He gave himself almost universally – in practical actions as well as careful design. He was a staunch defender of democracy, especially in university communities where he earned a campus-wide reputation for the brave and ferocious defence of colleagues unfairly denied tenure. Here, as elsewhere, his approach was thoroughly professional – assisted by enrolment in law classes. From here sprung other benefits – radio commentaries on local radio station WORT (in a local style of Alistair Cooke’s ‘Letter from America’), and writings far beyond his original call as educator (for instance: his “Knowledge Business” book [1]).

One marvelled at his inventions and his detailed design in both engineering and social engineering – his ideas were considerably ahead of their time – collectively remembered under the euphonious title ‘actually, there’s a better way to do that’. A futurist with a green vision, he advocated such urban development as ferrying long-distance traffic by rail (eventually realised by the likes of the Channel Tunnel), and the `forever down-hill’ bicycle paths (with escalator service), to which the self-service, bike-sharing schemes such as London’s Boris-bike is only yet a nod in the right direction. He practiced what he preached – skilling-up as a Cessna pilot, he delighted friends by piloting them in his share-owned plane. An active supporter of clean technology, he lobbied Madison Transport Authorities to invest in hydrogen buses.

This indeed was a Leonardo-like mathematician with awesome insight and inquiry. Rightly does his family’s obituary say that he: “… Went unwillingly to explore infinity in the early morning of December 21, 2014”.

#### References

[1] Beck, A. *The Knowledge Business *[Online]. Available at: http://www.math.wisc.edu/beck/2k.htm [Accessed: 25 January 2016]

[2] Beck, A, Bingham, NH. *Wages, Hours And Years: An Exploration Of Labor Economics *[Online]. Available at: http://www.math.wisc.edu/beck/Wages/Wages1.htm [Accessed: 25 January 2016]

[3] Beck, A, Corson, HH, Simon, AB. “The Interior Points Of The Product Of Two Subsets Of A Locally Compact Group”. *Proceedings of the American Mathematical Society* 9.4 (1958): 648.

[4] Beck, A. “On Invariant Sets”. *The Annals of Mathematics* 67.1 (1958): 99.

[5] Beck, A. “A Very Sparse Set Of Dimension 1”. *Mathematika* 31.01 (1984): 42.

[6] Beck, A, Lossers, OP. ” Problems and Solutions: Solutions of Elementary Problems: E3176″. *The American Mathematical Monthly* 95.9 (1988): 875.

[7] Beck, A. “On Rings On Rings”. *Proceedings of the American Mathematical Society* 15.3 (1964): 350.

[8] Beck, A. “A Theorem On Maximum Modulus”. *Proceedings of the American Mathematical Society* 15.3 (1964): 345.

[9] Beck, A. “Greed Is (Sometimes) Not Enough”. *The American Mathematical Monthly* 97.4 (1990): 289.

[10] Beck, A. “Constructing A Fair Border”. *The American Mathematical Monthly* 94.2 (1987): 157.

[11] Beck, A. “The Broken Spiral Theorem”. *The American Mathematical Monthly* 93.4 (1986): 293.

[12] Beck, A,Bleicher, MN, Crowe, DW. *Excursions Into Mathematics*. [New York]: Worth Publishers, 1969.

[13] Beck, A,Bleicher, MN, Crowe, DW. *Excursions Into Mathematics*. The Millennium Edition. [Natick, MA]: A K Peters, Ltd., 2000.

[14] Beck, A. “A Convexity Condition In Banach Spaces And The Strong Law Of Large Numbers”. *Proceedings of the American Mathematical Society* 13.2 (1962): 329.

[15] Maurey, B. “Type, Cotype And K-Convexity”. In: Johnson WB, Lindenstrauss J (eds) “Handbook of the geometry of Banach spaces”. Vol. 2. [Burlington]: Elsevier, 2003.

[16] Beck, A, Lewin, J, Lewin, M. *Continuous Flows In The Plane*. In: Grundlehren der mathematischen Wissenschaften, Vol. 201. [Berlin-Heidelberg]: Springer-Verlag, 1974.

[17] Beck, A. “Ein Paradoxon: der Hase und die Schildkröte”. (German) In: *Selecta Mathematica V (German), *pp. 1–21, Heidelberger Taschenbücher 4. Vol. 201. [Berlin-New York]: Springer*,* 1979.

[18] Alpern, S, Beck, A. “Hex Games And Twist Maps On The Annulus”. The American Mathematical Monthly 98.9 (1991): 803.

[19] Beck, A, Beck, M. “Son Of The Linear Search Problem”. *Israel Journal of Mathematics* 48.2-3 (1984): 109.

[20] Beck, A, Beck, M. “The Revenge Of The Linear Search Problem”. *SIAM Journal on Control and Optimization* 30.1 (1992): 112.

**Anatole Beck: ****Bibliography**

2006 | (with Bingham, NH) Wages, Hours And Years: An Exploration Of Labor Economics [Online]. Available at: http://www.math.wisc.edu/beck/Wages/Wages1.htm [Accessed: 25 January 2016]. |

2001 | A More Proportional Representation [Online]. Madison. Available at: http://www.math.wisc.edu/beck/proxy.html [Accessed: 25 January 2016]. |

2000 | "A Fractal Example In Ordinary Differential Equations". The American Mathematical Monthly 107.2 (2000): 174. |

(with Bleicher, MN, Crowe, DW) Excursions Into Mathematics. The Millennium Edition. [Natick, MA]: A K Peters, Ltd., 2000. | |

"The Knowledge Business". Social Policy 31.1 (2000): 42. | |

(with Alpern, S) "Pure Strategy Asymmetric Rendezvous On The Line With An Unknown Initial Distance." Operations Research 48.3 (2000): 498. | |

1999 | (with Alpern, S) "Asymmetric Rendezvous On The Line Is A Double Linear Search Problem". Mathematics of Operations Research 24.3 (1999): 604. |

(with Alpern, S) "Rendezvous Search On The Line With Limited Resources: Maximizing The Probability Of Meeting." Operations Research 47.6 (1999): 849. | |

1997 | (with Lim, WS, Alpern, S) "Rendezvous Search On The Line With More Than Two Players". Operations Research 45.3 (1997): 357. |

1996 | The Knowledge Business [Online]. Available at: http://www.math.wisc.edu/beck/2k.htm [Accessed: 25 January 2016]. |

1995 | (with Baston, V) "Generalizations In The Linear Search Problem". Israel Journal of Mathematics 90.1-3 (1995): 301. |

"The Decimal Dysfunction." The Math. Intelligencer 17.1 (1995): 5. | |

1992 | (with Beck, M) "The Revenge Of The Linear Search Problem". SIAM Journal on Control and Optimization 30.1 (1992): 112. |

1991 | (with Alpern, S) "Hex Games And Twist Maps On The Annulus". The American Mathematical Monthly 98.9 (1991): 803. |

1990 | "Greed Is (Sometimes) Not Enough". The American Mathematical Monthly 97.4 (1990): 289. |

1988 | (with Lossers, OP) "Problems And Solutions: Solutions Of Elementary Problems: E3176". The American Mathematical Monthly 95.9 (1988): 875. |

1987 | (with Lossers, OP) "Problems And Solutions: Solutions Of Advanced Problems: 6492". The American Mathematical Monthly 94.1 (1987): 82. |

"Constructing A Fair Border". The American Mathematical Monthly 94.2 (1987): 157. | |

1986 | (with Clark, DS, Dou J, Oliver, HW, Wilansky, A, Ilmsted, C) "Elementary Problems: E3171-E3176". The American Mathematical Monthly 93.9 (1986): 732. |

"The Broken Spiral Theorem". The American Mathematical Monthly 93.4 (1986): 293. | |

(with Beck, M) "The Linear Search Problem Rides Again". Israel Journal of Mathematics 53.3 (1986): 365. | |

"Utopia Under Glass." Civil Engineering - ASCE 56.7 (1986): 54. | |

1985 | (with Borwein, J) "Advanced Problems: 6491-6492". The American Mathematical Monthly 92.3 (1985): 217. |

"Probability In Banach Spaces V". In: Proceedings of the international conference held in Medford, USA, July 16-27, 1984. Vol. 1153. Springer-Verlag, 1985. | |

1984 | "A Very Sparse Set Of Dimension 1". Mathematika 31.01 (1984): 42. |

(with Beck, M) "Son Of The Linear Search Problem". Israel Journal of Mathematics 48.2-3 (1984): 109. | |

1981 | "A Pathological Flow In The Torus". Proceedings of the American Mathematical Society 82.2 (1981): 303. |

1979 | "Ein Paradoxon: der Hase und die Schildkröte". (German) In: Selecta Mathematica V (German), pp. 1-21, Heidelberger Taschenbücher 4. Vol. 201. [Berlin-New York]: Springer, 1979. |

1978 | "On The Covariance Tensor". In: Vector Space Measures and Applications (Proc. Conf., Univ. Dublin, Dublin, 1977), I, pp. 51-56, Lecture Notes in Math. Vol. 644, [Berlin-Heidelberg]: Springer, 1978. |

1976 | "Cancellation In Banach Spaces". In: Probability in Banach Spaces (Proc. First Internat. Conf., Oberwolfach, 1975), pp. 1320, Lecture Notes in Math. Vol. 526, [Berlin-Heidelberg]: Springer, 1976. |

(with Warren, P) "Strong Laws Of Large Numbers For Weakly Orthogonal Sequences Of Banach Space-Valued Random Variables". The Annals of Probability 2.5 (1974): 918. | |

"Conditional Independence". Zeitschrift für Wahrscheinlichkeitstheorie und Verwandte Gebiete 33.4 (1976): 253. | |

(with Warren, P) Counterexamples to strong laws of large numbers for Banach space-valued random variables. In: Théorie Ergodique, pp. 1-14, [Berlin-Heidelberg]: Springer, 1976. | |

1975 | "A Necessary And Sufficient Condition For Planar Flows". Mathematical Systems Theory 9.1 (1975): 51. |

(with Giesy, DP, Warren, P) "Recent Developments In The Theory Of Strong Laws Of Large Numbers For Vector-Valued Random Variables". Theory of Probability & Its Applications 20.1 (1975): 127. | |

1974 | (with Lewin, J, Lewin, M) Continuous Flows In The Plane. In: Grundlehren der mathematischen Wissenschaften, Vol. 201. [Berlin-Heidelberg]: Springer-Verlag, 1974. |

(with Warren, P) "Strong Laws Of Large Numbers For Weakly Orthogonal Sequences Of Banach Space-Valued Random Variables". The Annals of Probability 2.5 (1974): 918. | |

"Conditional Independence". Bulletin of the American Mathematical Society 80.6 (1974): 1169. | |

1973 | (with Warren, P) "The Return Of The Linear Search Problem". Israel Journal of Mathematic. 14.2 (1973): 169. |

"Uniqueness Of Flow Solutions Of Differential Equations". In: Recent advances in topological dynamics (Proc. Conf. Topological Dynamics, Yale Univ., New Haven, Conn., 1972), pp. 30-50, Lecture Notes in Math. Vol. 318, [Berlin]: Springer, 1973. | |

1972 | (with Warren, P) "Weak Orthogonality". Pacific Journal of Mathematics 41.1 (1972): 1. |

1971 | (with Lewin, J, Lewin, M) "On Compact One-To-One Continuous Images Of The Real Line". Colloquium Mathematicae 23 (1971): 251. |

"Upper Semi-Continuous Decompositions Of An Arc". Mathematical Systems Theory 5.4 (1971): 292. | |

"The Hare And The Tortoise, And Other Stories." Proceedings. Department of Mathematics, University of Kentucky, 1971. | |

1970 | (with Newman, DJ) "Yet More On The Linear Search Problem". Israel Journal of Mathematics 8.4 (1970): 419. |

(with Giesy, DP) "P-Uniform Convergence And A Vector-Valued Strong Law Of Large Numbers". Transactions of the American Mathematical Society 147.2 (1970): 541. | |

1969 | (with Bleicher, MN, Crowe, DW) Excursions Into Mathematics. [New York]: Worth Publishers, 1969. |

1965 | "More On The Linear Search Problem". Israel Journal of Mathematics 3.2 (1965): 61. |

"Plane Flows With Few Stagnation Points". Bulletin of the American Mathematical Society 71.6 (1965): 886. | |

"Plane Flows With Closed Orbits". Transactions of the American Mathematical Society 114.2 (1965): 539. | |

1964 | "A Theorem On Maximum Modulus". Proceedings of the American Mathematical Society 15.3 (1964): 345. |

"On The Linear Search Problem". Israel Journal of Mathematics 2.4 (1964): 221. | |

"On Rings On Rings". Proceedings of the American Mathematical Society 15.3 (1964): 350. | |

1963 | "On The Strong Law Of Large Numbers". In: Ergodic Theory (Proc. Internat. Sympos., Tulane Univ., New Orleans, La., 1961), pp.21-53. [New York]: Academic Press, 1963. |

1962 | "A Convexity Condition In Banach Spaces And The Strong Law Of Large Numbers". Proceedings of the American Mathematical Society 13.2 (1962): 329. |

1961 | (with Kayel, RG) "Elementary Problems And Solutions: Solutions: E1434". The American Mathematical Monthly 68.7 (1961): 668. |

(with Moran, DA, Mathews, JC) "Elementary Problems And Solutions: Solutions: E1434". The American Mathematical Monthly 68.4 (1961): 381. | |

1960 | (with Klamkin, MS, Newman, DJ, Lowenschuss, O, Rosenfeld, A, Oppenheim, A, Leetch, JF) "Elementary Problems And Solutions: Problems For Solution: E1431-E1435". The American Mathematical Monthly 67.8 (1960): 802. |

"Eigen Operators Of Ergodic Transformations". Transactions of the American Mathematical Society 94.1 (1960): 118. | |

"A Note On Semi-Groups In A Locally Compact Group". Proceedings of the American Mathematical Society 11.6 (1960): 992. | |

"Continuous Flows With Closed Orbits". Bulletin of the American Mathematical Society 66.4 (1960): 305. | |

1958 | (with Corson, HH, Simon, AB) "The Interior Points Of The Product Of Two Subsets Of A Locally Compact Group". Proceedings of the American Mathematical Society 9.4 (1958): 648. |

"Une Loi Forte Des Grands Nombres Dans Des Espaces De Banach Uniformément Convexes". (French) Annales de l'Institut Henri Poincaré (French) 16 (1958): 35. | |

"Une Loi Forte Des Grands Nombres Dans Des Espaces De Banach Uniformément Convexes". (French) Comptes Rendus de l'Académie des Sciences (French) 246 (1958): 696. | |

"On Invariant Sets". The Annals of Mathematics 67.1 (1958): 99. | |

1957 | (with Schwartz, JT) "A Vector-Valued Random Ergodic Theorem". Proceedings of the American Mathematical Society 8.6 (1957): 1049. |

1956 | "On The Random Ergodic Theorum". Ph.D. thesis, Yale University. 1956. |

Eve Siegel BeckJanuary 28, 2016 at 9:32 pmThank you, dearest friends and colleagues of my fabulous husband. He would be honored by your caring and comments. HE IS STILL TEACHING!! – Anatole’s body was bequeathed to the University of Wisconsin School of Medicine- so he is still “working on campus.” Many thanks always, for the gracious reception he always got upon returning to London and LSE. He considered it home, and you were his family.