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Heinrich Kornblum was a student of Edmund Landau who is known for his generalization of Dirichlet's theorem on primes in arithmetic progressions to function fields. He was born in Wolow, Poland in 1890, and he died in 1914 as a soldier in WWI at the age of 24 before he had a chance to write up his work, which was to be his doctoral thesis. Landau edited and published his results posthumously as Über die Primfunktionen in einer Arithmetischen Progression.

This is, as far as I can tell, the sum total of all knowledge that has been preserved about Heinrich Kornblum. I cannot find any other papers written by him, and every source I have seen that mentions him cites only the narrative I have reproduced above. Does anyone know any more information about him, or is he a tragic mathematician lost to history?

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    $\begingroup$ The publication cited in the question actually contains a few biographical notes about Kornblum in a footnote supplied by Landau: See online scan $\endgroup$ – njuffa May 9 at 11:17
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    $\begingroup$ To clarify based on Landau's footnote: Kornblum was born in Wohlau (modern-day Wolow) in the Prussian province of Silesia on August 23, 1890. He volunteered at the start of WW1 and fell in October 1914 near Poelkapelle in Flanders (Belgium). $\endgroup$ – njuffa May 9 at 11:35
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    $\begingroup$ The annual report of the high school he attended, "Königliches Gymnasium Wohlau", for the school year 1908-1909 shows that he graduated Easter 1909, with the intention of studying mathematics. His father is listed as a medical doctor residing in Wohlau. $\endgroup$ – njuffa May 9 at 12:10
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    $\begingroup$ Zentralblatt Math indeed contains only one publication, dated 1919 for this person. $\endgroup$ – Alexandre Eremenko May 9 at 13:02
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The Göttingen Digitalization Center provides a digital scan of the paper H. Kornblum: "Über die Primfunktionen in einer arithmetischen Progression." Mathematische Zeitschrift 5 (1919), 100–111 online. The first page features a footnote by Landau that provides a few biographical details: Heinrich Kornblum was born in Wohlau on August 23, 1890. He volunteered at the start of the war and fell in October 1914 near Poël-Capelle.

Wohlau (today: Wołów in Poland) was a small town in the Prussian province of Silesia, which in 1890 had about 2,500 inhabitants according to the German Wikipedia. It is located in the vicinity of Breslau (today: Wrocław in Poland). Poël-Capelle appears to be an older spelling of Poelkapelle, a municipality in Flanders (in Belgium). In October 1914, the area around Poelkapelle and Langemarck was involved in the First Battle of Ypres.

I managed to locate a digital scan of the annual report for the school year 1908-1909 of the high school Kornblum attended in his hometown of Wohlau:

Dr. Fritz Sattig, "Königliches Gymnasium zu Wohlau. Bericht über das Schuljahr 1908-1909". Wohlau: Schulze 1909

Among the list of graduates on p. 13, we find Heinrich Kornblum, born August 23, 1890. He attended the school for nine years and graduated Easter 1909. His father is listed as a physician (general practitioner) residing in Wohlau, and he intended to study mathematics. The family appears to have been well-off, because on p. 12 it is stated that Kornblum's father donated 25 marks to the school.

In the report, there are indications that Kornblum was an excellent student. On p. 11 we read that he did not have to participate in the oral part of final exams, which (to my knowledge) was a privilege only accorded the best students. Also on p. 11 we learn that Kornblum was awarded a prize in the form of a book "Deutschlands Seemacht" (German Naval Power) by Georg Wislicenus on the occasion of the birthday of his majesty the emperor (back then, January 27).

Kornblum's father was likely Dr. Hermann Kornblum, who had been approved as a resident physician in Wohlau in 1883, per an official notice published in Berliner klinische Wochenschrift, vol. 20, no. 17, p. 260. He may be identical with Dr. Hermann Kornblum whose medical dissertation from 1878, "Zur Aetiologie und Therapie des Cephalämatoms Neugeborener" at the University of Breslau was reviewed in Schmidt's Jahrbücher der in- und ausländischen gesammten Medicin, vol. 182 (1879), p. 111. Possible confirmation is an entry in a list of practicing physicians in Dr. Paul Börner's Reichs-Medicinal-Kalender für Deutschland, Leipzig: George Thieme 1887, p. 127 which states:

Wohlau (Kr. Wohlau, 3144 E.) Dr. Kornblum, Herm. 78, Kr.-W.-A.

where "78" appears to refer to (by comparison with other entries) 1878, the year of his dissertation.

Based on the dissertation records of the University of Breslau, Hermann Kornblum was born on March 2, 1854 in Branitz in Silesia (today: Branice in Poland). I found that the attended the "Königliches Gymnasium" in the Silesian town of Ratibor (today: [Racibórz] in Poland), from which he graduated Easter 1873 with the stated intention to study medicine in Breslau. His deceased father is listed as "Kaufmann" (merchant, shopkeeper) in Branitz.

It is interesting to note that Hermann Kornblum's graduation record shows his religious affiliation as Jewish, while Heinrich Kornblum's graduation record shows his religious affiliation as protestant. A potential sister of Heinrich Kornblum is Fri[e]da Kornblum, born September 23, 1888 in Wohlau in Silesia whose father is listed as "Sanitätsrat", an honorary title that in Prussia was often accorded physicians in private practice after twenty years of practicing their profession. She became a physician and was later restricted in her professional practice under Nazi laws on account of her Jewish ancestry.

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