File:Annales Polonici Mathematici Cover page 1955.png

Fair use in Annales Polonici Mathematici
Though this image is claimed to be subject to copyright, its use is covered by the U.S. fair-use laws because:
 * 1) It illustrates an educational article about the journal from which the cover illustration was taken.
 * 2) The image is used as the primary means of visual identification of the article topic.
 * 3) The use of the cover will not affect the value of the original work or limit the copyright holder's rights or ability to distribute the original. In particular, copies could not be used to make illegal copies of the journal. The journal contents is offered for free download by its publisher, see in particular https://www.impan.pl/en/publishing-house/journals-and-series/annales-polonici-mathematici/all/1 for the 1955 volume.
 * 4) It is a low resolution image (330 * 479  262 * 380 pixels).
 * 5) The image is only a small portion of the commercial product.
 * 6) It is not replaceable with an uncopyrighted or freely copyrighted image of comparable educational value.