Quo Fuit places 8 dated presences for Felix Hausdorff across 7 places, from 1887 to 1942.
Each one keeps the sentence it was taken from and a link to its source.
Felix Hausdorff (November 8, 1868 – January 26, 1942) was a German mathematician, pseudonym Paul Mongré (à mon gré (Fr.) = "according to my taste"), who is considered to be one of the founders of modern topology and who contributed significantly to set theory, descriptive set theory, measure theory,Wikipedia, full article · CC BY-SA
Every dot is a place Felix Hausdorff is documented in, on a dated record. The interactive globe carries the full detail.
Where Felix Hausdorff was documented, and when
1887 to 1891period
Freiburgattested“From 1887 to 1891 Hausdorff studied mathematics and astronomy, mainly in his native city of Leipzig, interrupted by one semester in Freiburg (summer 1888) and Berlin (winter 1888/1889).”source: Wikipedia: Felix Hausdorff
1900year
Bonnattested“Hausdorff's only child, his daughter Lenore (Nora), was born in 1900; she survived the era of National Socialism and enjoyed a long life, dying in Bonn in 1991.”source: Wikipedia: Felix Hausdorff
December 1901month
University of Leipzigattested“In December 1901 Hausdorff was appointed as adjunct associate professor at the University of Leipzig.”source: Wikipedia: Felix Hausdorff
1910year
University of Bonnattested“For the summer semester of 1910 Hausdorff was appointed as professor to the University of Bonn.”source: Wikipedia: Felix Hausdorff
April 1914month
Greifswaldattested“It was completed in Greifswald, where Hausdorff had been appointed for the summer semester as full professor in 1913, and was released in April 1914.”source: Wikipedia: Felix Hausdorff
1919year
Greifswaldattested“Among the publications of Hausdorff in his time at Greifswald the work Dimension and outer measure from 1919 is particularly outstanding.”source: Wikipedia: Felix Hausdorff
1920year
Polandattested“The journal Fundamenta Mathematicae, founded in Poland in 1920, played a special role in the reception of Hausdorff's ideas.”source: Wikipedia: Felix Hausdorff
26 January 1942exact date
Endenichattested“After Hausdorff, his wife, and his wife's sister, Edith Pappenheim (who was living with them), were ordered in January 1942 to move to the Endenich camp, the three died by suicide on 26 January 1942 by taking an overdose of veronal.”source: Wikipedia: Felix Hausdorff
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Other places tied to Felix Hausdorff in the record
In each of these, a source puts Felix Hausdorff and the place in the same dated sentence without stating
that Felix Hausdorff was there. They are kept apart from the timeline above for exactly that reason:
a mention is not a presence, and Quo Fuit does not quietly promote one into the other.
1873year
Leipzigmentioned“After considering Hausdorff's application to Leipzig, the Dean Kirchner felt compelled to make the following addition to the very positive vote from his colleagues, written by Heinrich Bruns: This quote emphasizes the undisguised antisem…”source: Wikipedia: Felix Hausdorff
1898year
Nietzsche Archivementioned“In his essay on the book The Will to Power compiled from notes left in the Nietzsche Archive he says: His critical standard he took from Nietzsche himself, In 1898—also under the pseudonym Paul Mongré—Hausdorff published an epistemologic…”source: Wikipedia: Felix Hausdorff
1900year
Göttingenmentioned“His was one of the first ever lectures on set theory; only Ernst Zermelo's lectures in Göttingen College during the winter of 1900/1901 were earlier.”source: Wikipedia: Felix Hausdorff
1904year
Heidelbergmentioned“Hausdorff's excellent knowledge of recurrence formulas of this kind also empowered him to uncover an error in Julius König's lecture at the International Congress of Mathematicians in 1904 in Heidelberg.”source: Wikipedia: Felix Hausdorff
1916year
Greifswaldmentioned“The mathematical institute there was also small; during the summer of 1916 and the winter of 1916/17, Hausdorff was the only mathematician in Greifswald.”source: Wikipedia: Felix Hausdorff
1921year
Bonnmentioned“It was thus a substantial improvement for his academic career when Hausdorff was appointed in 1921 to Bonn.”source: Wikipedia: Felix Hausdorff
1934year
University of Bonnmentioned“In the winter semester of 1934/1935, there was a working session of the National Socialist German Student Union (NSDStB) at the University of Bonn, which chose "Race and Ethnicity" as their theme for the semester.”source: Wikipedia: Felix Hausdorff
1941year
Endenichmentioned“In mid-1941, the Bonn Jews began to be deported to the "Monastery for Eternal Adoration" in Endenich, Bonn, from which the nuns had been expelled.”source: Wikipedia: Felix Hausdorff
Two people documented in the same place in the same year is a correlation, not a meeting.
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How to read this page
Every line above is a dated fact taken from a source, with the sentence it came from and a link
back to it. Nothing is inferred, and a gap in the record is not evidence that someone was elsewhere.
A tag says how the fact is carried by its source: documented a structured,
explicitly dated record, attested a sentence that states the person was there,
mentioned a sentence that ties the person to the place without stating presence.
Sentences quoted from Wikipedia are available under CC BY-SA 4.0. Public domain books come from
Project Gutenberg. Quo Fuit claims no rights over these sources.
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