Ptolemy I Soter rivals after Alexander's death. For example, Arrian's account of the fall of Thebes in 335 BC ("Anabasis" , a rare section of narrative explicitly attributed to Ptolemy by Arrian) shows several significant variations from the parallel account preserved in Diodorus Siculus (17.11–12), most notably in attributing a distinctly unheroic role in proceedings to Perdiccas. More recently, J. Roisman has argued that the case for Ptolemy's blackening of Perdiccas and others has been much exaggerated. Ptolemy personally sponsored the great mathematician Euclid. He found Euclid's seminal work, the "Elements", too difficult to study, so he asked if there were an easier
Ptolemy IV Philopator major antagonist of the apocryphal 3 Maccabees, which describes events following the Battle of Raphia, in both Jerusalem and Alexandria. Ptolemy IV's reign was also marked by trade with other contemporaneous polities. In the 1930s, excavations by Mattingly at a fortress close to Port Dunford (the likely Nikon of antiquity) in present-day southern Somalia yielded a number of Ptolemaic coins. Among these pieces were 17 copper mints from the reigns of Ptolemy III, Ptolemy IV and Ptolemy V, as well as late Imperial Rome and Mamluk Sultanate coins. Ptolemy IV Philopator Ptolemy IV Philopator (, "Ptolemaĩos Philopátōr" "Ptolemy, lover of