Prompt
                                        
                                            Generate a realistic image of a mature German mathematician in a professional setting, possibly in front of a blackboard or a computer screen, with a thoughtful expression. He should be wearing glasses and have a slight smile, with a few papers or books scattered around him. Incorporate subtle hints of his work, such as matrices or algorithms, in the background. The style should be formal and academic, reflecting his achievements in mathematics and computer science. The image should convey a sense of intelligence, wisdom, and authority.