DescriptionHill1905.jpg English: Portrait of George William Hill, ca. 1905 Date 23 February 2013, 12:39:03 Source The collected mathematical works of George
DescriptionHill1905+signature.jpg English: Portrait of George William Hill with signature, ca. 1905 Date 23 February 2013, 12:37:16 Source The collected
DescriptionHill1905+signature - variant.jpg English: Portrait of George William Hill with signature, ca. 1905 Date 1905 Source The collected mathematical