Keywords: ABR-parabola.png page is/was http //cs wikipedia org/w/index php title Image 3AABR-parabola png here 2006-03-14 Original uploader was Jan Pol at http //cs wikipedia org cs wikipedia Released into the public domain by the author math cs Czech Wikipedia Jan Pol original upload log All user names refer to cs wikipedia 2006-03-14 07 21 Jan Pol 305×289×8 9360 bytes <nowiki></nowiki> Parabolas |