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Fișier:Johann Radon.png

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Descriere fișier

Descriere Portrait of Johann Radon about 1920
Dată circa 1920
date QS:P,+1920-00-00T00:00:00Z/9,P1480,Q5727902
Sursă Gesammelte Abhandlungen von Johann Radon, Vol. 2, Wien: Österr. Akad. d. Wiss; Basel; Boston; Birkhäuser. Bild übernommen aus "Hamburger Abhandlungen 6 (1928)", B.G. Teubner, Stuttgart
Autor NecunoscutUnknown author
Permisiune
(Reutilizarea acestui fișier)

This picture is originally shown in „Abhandlungen aus dem Mathematischen Institut der Universität Hamburg“, Band 6 (1928), on an unnumbered page, before page 273 (which starts Radon’s article). The page shows only Radon’s signature in addition to the picture, with no mention of the photographer.

The picture has been reprinted in “Gesammelte Abhandlungen von Johann Radon, herausgegeben von der Österr. Akad. d. Wiss. Unter Mitw. von Peter Manfred Gruber – Wien: Österr. Akad. d. Wiss.; Basel; Boston: Birkhäuser, Band 2 (1987), ISBN 3-7001-1170-3“, with the remark: “Veröffentlicht mit freundlicher Genehmigung des Verlages B.G. Teubner, Stuttgart“.

On January 15, 2008, angelika.bolisega@gwv-fachverlage.de (Teubner Verlag) informed me that the original publisher, B.G. Teubner, has no rights on this picture.

The picture does not appear anywhere except in these two places. It does not appear in the Mathematics Genealogy Project, nor does it appear in the MacTutor History of Mathematics Archive, nor in the book “75 Years of Radon Transform, edited by S. Gindikin and P. Michor, International Press Inc., Boston (1994), ISBN 1-57146-008-X”. Dr. Brigitte Bukovics, Johann Radon’s daughter, has told me on 15 Nov. 2010 that she has not seen the picture anywhere except in these two places and that she has not seen it otherwise in the mathematics book at her disposal.

It may therefore be safely assumed that the photographer is unknown, so that the license tag below applies.

Licențiere

Public domain
Public domain
The copyright of this image has expired in the European Union because it was published more than 70 years ago without a public claim of authorship (anonymous or pseudonymous), and no subsequent claim of authorship was made in the 70 years following its first publication.
EU
EU
To use this template, the image must meet both of the following two conditions:
  1. published over 70 years ago, and
  2. the original author's actual identity was not publicly disclosed in connection with this image within 70 years following its publication.

Images that lack either of these two conditions should not use this template.

Reasonable evidence must be presented that the author's name (e.g., the original photographer, portrait painter) was not published with a claim of copyright in conjunction with the image within 70 years of its original publication. Works which had not entered Public Domain in their country in 1996 that were uploaded before 1 March 2012 should be marked additionally with {{Not-PD-US-URAA}}.

Note: In some countries anonymous works are copyrighted until 70 years after the death of the author if the author's identity became public in any way during the original term. In Germany this applies to certain works published before July 1, 1995; see Übergangsrecht.

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Public domain
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Johann_Radon.png

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Data și oraMiniaturăDimensiuniUtilizatorComentariu
actuală17 noiembrie 2010 23:44Miniatură pentru versiunea din 17 noiembrie 2010 23:44514x882 (254 KB)QuibikRetouched: removed the patterned noise, removed most of the dust spots, changed the white border to pure white.
16 ianuarie 2008 23:20Miniatură pentru versiunea din 16 ianuarie 2008 23:20514x882 (337 KB)HPaul{{Information |Description=Portrait of Johann Radon about 1920 |Source=Gesammelte Abhandlungen von Johann Radon, Vol. 2 |Date=about 1920 |Author=unknown |Permission=according to German Urheberrechtsgesetz, the picture is free 10 years after the death of t

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