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Mathematics

Affiliated Items

Letter to Fundamenta Mathematicae

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Collection: Fritz Rothberger
Description: Letter to Fundamenta Mathematicae regarding a manuscript that Rothberger would like to publish in their journal. He asks about Payment Methods for receiving the journals.
Accession Number: 2011.007-RTH/002
Creator: Rothberger, Fritz, 1902-2000
Type: textual record

Letter to Fundamenta Mathematicae

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Collection: Fritz Rothberger
Description: Rothberger writes to Fundamenta Mathematicae talking about the manuscript he has sent them. He goes into detail of all that should be included in the package. He says thank you for the Journal he has received and tell them he has sent money in the mail. Includes NOTES FOR THE PRINTER.
Accession Number: 2011.007-RTH/002
Creator: Rothberger, Fritz, 1902-2000
Type: textual record

Letter to Lambek

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Collection: Fritz Rothberger
Description: Definition of a covering space over a space X with all conditions that should be satisfied to use the definition. It is hand written by Rothberger in both pencil and pen.
Accession Number: 2011.007-RTH/004
Creator: Rothberger, Fritz, 1902-2000
Type: textual record

Letter to Sierpinski

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Collection: Fritz Rothberger
Description: Letter to W. Sierpinski thanking him for the seperatum. He tells Sierpinski that his theorem is quite interesting. He includes two memories that he has published in the last few years. He tells him that he sent his theorem to the Annals but if they want it for Fundamenta he will send it to him as well. He also tells him another theorem he has written. He tells Sierpinksi about Acadia and his…
Accession Number: 2011.007-RTH/002
Creator: Rothberger, Fritz, 1902-2000
Type: textual record

On the negation of the continuum hypothesis

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Collection: Fritz Rothberger
Description: This document regards Rothberger's disbelief in the proposition "Every family of real functions of the power of the continuum has a denumerbale base". Rothberger states what must be done to prove this true.
Accession Number: 2011.007-RTH/004
Creator: Rothberger, Fritz, 1902-2000
Type: textual record

Paper, "On Property C and a problem of Hausdoroff"

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Collection: Fritz Rothberger
Description: Paper by Rothberger titled On the property C and a problem of Hausdorff. In this paper he makes references to his old papers to help him solve new problems which concern both of his old papers (Sur les familles indénomerable and On some problems of Hausdorff).
Accession Number: 2011.007-RTH/004
Creator: Rothberger, Fritz, 1902-2000
Type: textual record

Resume: Constuction effective d'un ensemble non-projectif

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Collection: Fritz Rothberger
Description: Written on a Université Laval letter head, this is the summary of his proof of a theorem. Possibly related to Exemple Effectif d'un Ensemble Transfiniment Non-Projectif. Contained in 2011.007-RTH/6.
Accession Number: 2011.007-RTH/004
Creator: Rothberger, Fritz, 1902-2000
Type: textual record

Memorandum on Queen's University Letterhead

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Collection: Fritz Rothberger
Description: Notes from Rothberger written on Queen's University Inter-Office Memorandum. Work is all written in a purple pencil. On the backside of the paper there is a purple scribble across the page. He has listed sets of dates and pages.
Accession Number: 2011.007-RTH/003
Creator: Rothberger, Fritz, 1902-2000
Type: textual record

Proof of Theorem 2

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Collection: Fritz Rothberger
Description: Proof of Theorem 2. The complete document should be 5 pages of a document; only 1 page is in the fonds.
Accession Number: 2011.007-RTH/004
Creator: Rothberger, Fritz, 1902-2000
Type: textual record

Letter to Erdos

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Collection: Fritz Rothberger
Description: Letter from Rothberger to Erdos thanking him for his Post Card in April. He asks Erdos if he has had time to go through the manuscripts he sent him. He tells Erdos that he has sent a manuscript to the Annals and has received it back . He is including another Theorem for Erdos and asks for a proof of the theorem Erdos sent him last year.
Accession Number: 2011.007-RTH/002
Creator: Rothberger, Fritz, 1902-2000
Type: textual record

Letter to Father Faught

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Collection: Fritz Rothberger
Description: Letter from Rothberger to Father Faught regarding the paper and mark of Joe Bardswich.
Accession Number: 2011.007-RTH/002
Creator: Rothberger, Fritz, 1902-2000
Type: textual record

Proof of Theorem I, II, III

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Collection: Fritz Rothberger
Description: Rothberger writes different theorems at the top of the page 3 and uses this paper to proof the theorems. Although the letter is typed, there are handwritten notes from Rothberger on it as well.
Accession Number: 2011.007-RTH/004
Creator: Rothberger, Fritz, 1902-2000
Type: textual record

O. Nikodym's Problem

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Collection: Fritz Rothberger
Description: Proof of Theorem that states the solution of O. Nikodym's problem.
Accession Number: 2011.007-RTH/004
Creator: Rothberger, Fritz, 1902-2000
Type: textual record

Part of Proof

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Collection: Fritz Rothberger
Description: Part of a proof of a theorem. It is not stated what he is trying to prove and it starts in the middle of the proof so it is hard to tell what is known and what is being proven.
Accession Number: 2011.007-RTH/004
Creator: Rothberger, Fritz, 1902-2000
Type: textual record

Letter from P. Erdos

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Collection: Fritz Rothberger
Description: Letter to Fritz Rothberger from P. Erdos written [December 31, 1945]. Erdos thanks Rothberger for the Christmas card and mentions the fate of some other European mathematicians in the Holocaust. He then proceeds to talk about Math with Rothberger. He includes his address and asks Rothberger to write more.
Accession Number: 2011.007-RTH/001
Creator: Erdos, Paul, 1913-1996
Type: textual record

Letter from Rothberger

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Collection: Fritz Rothberger
Description: Letter from Rothberger stating he had found a note from [M.Henri Egrand] about his theorems in "Les Comptes Rendus de L'Acad[ies]"
Accession Number: 2011.007-RTH/002
Creator: Rothberger, Fritz, 1902-2000
Type: textual record

Photograph of Canadian Mathematical Congress

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Collection: Fritz Rothberger
Description: Delegates of the Canadian Mathematical Congress Summer Seminar and High school Teachers Conference of 1951 in front of Sheriff Hall at Dalhousie University in Halifax, Nova Scotia. Written on back "Rothberger, front row extreme left"
Accession Number: 2011.007-RTH/005
Type: textual record

Letter to Erdos

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Collection: Fritz Rothberger
Description: A letter from Rothberger to Erdos thanking him for writing to him earlier about the European Mathematicians. Rothberger attached two manuscript and goes into detail on what is important in these manuscripts.
Accession Number: 2011.007-RTH/004
Creator: Rothberger, Fritz, 1902-2000
Type: textual record

Letter from W. Sierpinski

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Collection: Fritz Rothberger
Description: Letter to Fritz Rothberger from W. Sierpinksi, written on January 20, 1947. Sierpinski tells Rothberger that they will publish his work in the 34th edition of Fundamenta Mathematicae. He also corrects the wording of Rothberger's Theorem. Letterhead reads FUNDAMENTA MATHEMATICAE SEMINARIUM MATEMATYCZNE UNIWESYTERU,WARSAWA, UL. HOZA 69.
Accession Number: 2011.007-RTH/001
Creator: Sierpinski, Waclaw, 1882-1969
Type: textual record

Letter from Lord Beveridge

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Collection: Fritz Rothberger
Description: Lord Beveridge writes to Rothberger requesting for information on the experience Rothberger had with the Society for the Protection of Science and Learning. Letter head reads SOCIETY FOR THE PROTECTION OF SCIENCE AND LEARNING c/o Society for Visiting Scientists, 5, Old Burlington Street, London, W. 1.
Accession Number: 2011.007-RTH/001
Creator: Beveridge, Lord
Type: textual record

Letter from P. Erdos

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Collection: Fritz Rothberger
Description: Letter from Erdos to Rothberger sent in October of 1946. Erdos tells Rothberger that he should publish his conditions as they are since they cannot be proven false. He tells Rothberger of a paper he is writing that after rewritten he will send to him. He notes that his address will change for the next few months. Written on Harvard Mathematical Club Paper.
Accession Number: 2011.007-RTH/001
Creator: Erdos, Paul, 1913-1996
Type: textual record

Mathematical Proof, "Let F be a family of dyadic functions"

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Collection: Fritz Rothberger
Description: The proof of his theorem: Let F be a family of dyadic functions on a set X. This document includes two drafts of his theorem. The first being rough with marks in Red and Green on it. And the second having only green lines on it. Possibly a working draft of "A remark on the existence of a denumerable base for a family of dyadic functions." Included in 2011.007-RTH/4. A Remark on the…
Accession Number: 2011.007-RTH/004
Creator: Rothberger, Fritz, 1902-2000
Type: textual record

Mathematical Proof, "A remark on the existence of a denumerable base for a family of dyadic functions"

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Collection: Fritz Rothberger
Description: Rothberger references his earlier paper and continues to prove his theorem true.
Accession Number: 2011.007-RTH/004
Creator: Rothberger, Fritz, 1902-2000
Type: textual record

Fritz Rothberger

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Dates: unspecified decade in 19XX, 1945 to 1967
Collection: Fritz Rothberger, Archival Catalogue
Description: Finding aid for the Fritz Rothberger fonds.
Type: finding aid