U2 guitarist The Edge, born David Evans, introduces himself by his stage name, sources reported Monday. 'He showed up at parent-teacher conferences, extended his hand, and said, 'Hi, I'm Sian's father The Edge,'' said Dory Beckman, a second-grade teacher at Malibu Heights Elementary. 'I didn't quite understand, so he said, 'U2's The Edge.' Well, I guess with all the records he's sold, he's entitled to call himself whatever he wants.' Employees at Gladstone's 4 Fish restaurant said Evans placed 'The Edge' on their waiting list when he took his family out for fried scallops last week. 