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Edith Hirsch Luchins was the daughter of Max Hirsch. She was born in Brzeziny, about 20 km east of Łódź in Poland. Edith Hirsch was brought up in Poland for the first six years of her life then, in 1928, her family emigrated to the United States. Settling in New York City, she attended elementary school there, developing an interest in mathematics at this early stage in her education. She attended high school, also in New York City, and followed her interest in mathematics by taking every possible mathematics course the school offered. She also played a major role in the school mathematics club and used her skill in mathematics to her tutor other pupils.
Her undergraduate years were spent at Brooklyn College, graduating with a B.A. in 1942. While at high school Edith had taken a course on psychology taught by Abraham Samuel Luchins (born 8 March 1914), who was then a graduate student in educational psychology at New York University. Not only did this course give her a lifelong interest in psychology but a friendship with Abraham Luchins developed and they married a few months after Edith obtained a B.A. At this time Abraham Luchins was Max Wertheimer's research assistant. Edith Luchins spent the year 194243 working as a government inspector of Antiaircraft Director at the Sperry Gyroscope Company, Long Island, as part of the war effort. She then studied for a Master's Degree at New York University entering in 1943 while Abraham Luchins served in the army. She was awarded an M.S. by New York University in 1944 and then began to work for a Ph.D. undertaking research under Kurt Friedrichs and Richard Courant. As well as undertaking research, Luchins also was appointed as an instructor in mathematics at Brooklyn College. Her work towards a doctorate was progressing well, but was interrupted by the birth of her first child in 1946. A second child born in 1948 meant that she never completed her doctorate under Friedrichs and Courant for in 1949 Abraham Luchins was appointed to a post in McGill University in Montreal, Canada. This child, born on 1 July, was Daniel Jonathan Luchins who became a leading psychiatrist, writing works with his two parents.
Despite having to interrupt her doctoral studies, Luchins began to publish a series of papers with her husband including: Towards Intrinsic Methods in Testing (1946), A Structural Approach to the Teaching of the Concept of Area in Intuitive Geometry (1947), The Satiation Theory of Figural AfterEffects and Gestalt Principles of Perception (1953), and Variables and Functions (1954).
The Luchins family spent five years in Montreal during which time they had two further children. Edith did not give up academic work despite having four children to bring up but, as indicated by the publications we noted above, worked with her husband on the psychology of mathematical education. In 1954 Abraham Luchins was appointed to a position at the University of Oregon and despite having four children under eight years of age, she registered for a Ph.D. in mathematics at the University of Oregon. At Oregon her thesis advisor was Bertram Yood, and Luchins submitted her thesis On Some Properties of Certain Banach Algebras in 1957. She was awarded a Ph.D. from University of Oregon in 1957. The American Association of University Women awarded her the New York State Fellowship for 195758 and during this year she prepared two papers for publication based on the results she had obtained in her doctoral thesis. In 1958 her fifth child was born and in the following year the two papers On radicals and continuity of homomorphisms into Banach algebras and On strictly semisimple Banach algebras appeared, both in the Pacific Journal of Mathematics. Reviewing the first, Frank Bonsall writes:
A Banach algebra is said to be absolute if every homomorphism of a Banach algebra into it is continuous, and is said to be strictly semisimple if its twosided regular maximal right ideals have zero intersection. It is proved that an absolute Banach algebra contains no nonzero nilpotent elements, and that a strictly semisimple Banach algebra is absolute. For certain special Banach algebras (including semisimple annihilator algebras) it is proved that if B contains no nonzero nilpotent elements, then B is strictly semisimple (and hence absolute).
Reviewing the second, C E Rickart writes:
The author defines the "strict radical" of an algebra to be the intersection of those of its 2sided ideals which are regular maximal right ideals. If the strict radical is zero, the algebra is called strictly semisimple (sss). An example of a sss Banach algebra is the real algebra C(X,Q) of all quaternionvalued functions which are continuous and vanish at infinity on the locally compact Hausdorff space X. Also, any subalgebra of C(X,Q) is sss. It is proved that a real Banach algebra is sss if and only if it is isomorphic with a subalgebra of C(X,Q). Thus any subalgebra (closed or not) of a sss real Banach algebra is sss. Finally it is proved that the strict radical of a real Banach algebra contains the set of topologically nilpotent elements.
Also in 1959 her book Rigidity Of Behavior, written jointly with her husband, was published by the University Of Oregon Press. Luchins held faculty positions at Brooklyn College and the University of Miami before she was appointed to the Rensselaer Polytechnic Institute in Troy, eastern New York, in 1962. Rensselaer, founded in 1824, was unusual in being specifically dedicated from its foundation to the study of science and civil engineering. She was appointed a full professor at Rensselaer becoming the first woman to hold such a position. She retained her chair until 1992 when she formally retired but was made professor emeritus. She had spent the year before she formally retired, 19911992, as distinguished visiting professor of mathematics at the United States Military Academy in West Point. Her husband spent the year in West Point with the Department of Behavioral Sciences and Leadership.
Luchins wrote many books and papers, many jointly with her husband, and it is impossible to give more than just a brief indication of their range. Books written with her husband include: Logical Foundations Of Mathematics For Behavioral Scientists (1965), Wertheimer's Seminars Revisited: Problem Solving And Thinking (1970), and Max Wertheimer's Life And Background: Source Materials (2 Vols.) (19911993). Papers written with her husband include: Logicism (1964), Effects of preconceptions and communications on impressions of a person (1970), Prescriptive Dimensions of Gestalt Psychology: A Critical Evaluation (1978), and Geometric Problem Solving Related to Differences in Sex and Mathematical Interests (1979). Also in 1979 she published Sex Differences in Mathematics: How Not to Deal with Them in the American Mathematical Monthly. Let us quote from this paper to gain an impression of the strong influence she had on the mathematical education of women:
Even casual observation of this distinguished assemblage reveals sex differences among mathematicians. There are both male and female mathematicians! This may seem to be a vehement way of expressing the obvious. But it seems to be not at all obvious to those who portray the history of mathematics. A case in point is an important collection of portraits and biographies of mathematicians throughout the ages on a wall map entitled "Men of Modem Mathematics". There is a woman among them, Emmy Noether. But absent are other women who, despite enormous obstacles, contributed significantly to mathematics, e.g., Sophia Germain and Sonya Kovalevskaya. In a similar vein, a wellknown and otherwise excellent textbook on the history of mathematics has no women listed in the name index  and seemingly not mentioned in the text not even Emmy Noether, although her father, Max Noether, is listed. Still another wellknown text on the history of mathematics referred to Hypatia of the fourth century as the first woman mathematician to be mentioned in the history of mathematics  but it referred to no other women, at least not in its first three editions, even as recently as 1969; however, there is a brief reference to Emmy Noether in the most recent edition of the text.
These are illustrations of ways in which not to deal with sex differences in mathematics. Do not ignore or overlook or hide the achievements of one sex. Let us find out more about these achievements and make them known to our colleagues, our students and the general public.
True, famous women mathematicians throughout history can be counted on one's fingers. But when mathematics students were asked to name such women, they usually did not reach even the first finger. For example, when the request to name famous women mathematicians was made of 26 mathematics majors in a juniorsenior level algebra class, 24 did not list any names. In contrast, when they were then asked to name three to five famous mathematicians, 22 students answered, listing an average of four (male) mathematicians. It is important to increase the awareness of the contributions of women mathematicians in the past.
Nor should we belittle the women's contributions. At a recent conference on women in the history of mathematics, one of the participants remarked that on the whole she was disappointed in the achievements of the women whose names were recalled. She need not have been, if she took into account the conditions under which they worked. Nor should their accomplishments be attributed to others. I am thinking of the allegation that Sonya Kovalevskaya's mathematics was really due to her mentor, Karl Weierstrass. It was a male mathematician who made the quip that there is some doubt about whether Kovalevskaya was a mathematician and whether Emmy Noether was a woman. It is not worth repeating, except to illustrate the depths to which we can sink in belittling the accomplishments of women in the history of mathematics. Let us give them their due.
This should be done not only for women in the past, but also for contemporary women mathematicians. Yet even women are not doing so. How many of us have portraits in our offices of women mathematicians to motivate the interest of our students and colleagues? How many of us use our initials in publications so that the author is not readily identified as a woman? How many of us do not bother to publish what some of our male colleagues might readily rush into print? This point was revealed to me while interviewing male and female recent Ph.D.'s in mathematics. More women than men thought that their doctoral theses were not worthy of publication, even when other mathematicians, including their male advisors, thought that they were. How many of us know outstanding contemporary women mathematicians? Informal surveys which I have conducted at mathematics meetings suggest that women are less informed in this respect than men. When asked to name five outstanding contemporary women mathematicians, fewer women than men named them, and many women admitted that they did not know any.
Of course this was written by Luchins in 1979 and much has changed in the thirty years since then. But let us stress that the changes in attitudes today which make the piece above sound very dated are in no small part due to Luchins herself.
Many of her works are concerned with applications of mathematics to philosophy and psychology. However, she returned to the topics of her doctoral dissertation writing Completion of norms for C(X,Q) published in 1971 which she summarised as follows:
Let C(X,Q) denote the algebra of all continuous quaternionvalued functions vanishing at infinity on a locally compact Hausdorff space X. Under the natural norm (the sup norm) and under the spectral radius norm r(f), which is equivalent to the sup norm, C(X,Q) is a Banach algebra. Let d(f) be any normed algebra norm for C(X,Q). It is shown that d(f), whether or not it is complete, majorizes the natural norm and r(f). Under certain conditions on the radical of the completion of d(f), d(f) is equivalent to the natural norm and r(f).
In 1973, in collaboration with K C Mastan, she published Quasinilpotent operators as norm limits of nilpotent operators. A Lambert writes in a review:
The authors announce some results concerning the closure of the set of nilpotent operators on a Banach space. Primary attention is paid to a radical algebra T of operators on C [0,1] with the property that the closure of the set of nilpotent elements of T forms a maximal ideal.
Luchins received many honours for her outstanding contributions including the Rensselaer Distinguished Teaching Award, the Darrin Counseling Award, the Martin Luther King Jr. Award, and the Rensselaer Alumni Association Outstanding Faculty Award. She also received the Award for Distinguished Public Service at West Point. In 1998 she was made an honorary member of the Society for Gestalt Theory and Its Applications.
Edith Hirsch Luchins died at the Good Samaritan Hospital in Suffern, New York. She was buried in the New Mount Carmel Cemetery in Cypress Hills, Queens. Abraham Luchins died on 27 December 2005.
Article by: J J O'Connor and E F Robertson
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