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설명 Portrait of Johann Radon about 1920
날짜 1920년경
date QS:P,+1920-00-00T00:00:00Z/9,P1480,Q5727902
출처 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
저자 미상Unknown author
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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.

라이선스

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
이 작품은 1929년 1월 1일 이전에 출판하였으므로 미국에서 퍼블릭 도메인입니다.
퍼블릭 도메인 작품을 공용에 올리기 위해서는 미국과 작품의 제작 국가에서 저작권이 만료되어야 합니다. 미국에서 제작된 작품이 아닐 경우, 제작 국가에서의 저작권 상태를 나타내는 저작권 태그를 반드시 추가로 부착해야 합니다.

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현재2010년 11월 18일 (목) 05:442010년 11월 18일 (목) 05:44 판의 섬네일514 × 882 (254 KB)QuibikRetouched: removed the patterned noise, removed most of the dust spots, changed the white border to pure white.
2008년 1월 17일 (목) 05:202008년 1월 17일 (목) 05:20 판의 섬네일514 × 882 (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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