The discussion revolves around the Hubble profile of surface brightness, specifically the mathematical expression for surface brightness and its implications for total luminosity. The original poster seeks to demonstrate that this profile leads to infinite total luminosity, raising questions about the relationship between surface brightness and total luminosity.
Some participants suggest that the problem may be more conceptual than mathematical, indicating that the original poster might benefit from revisiting textbook material. There is a sense of frustration expressed regarding the perceived lack of comprehensive resources on the topic.
Participants note that the textbook provides limited information on the subject, which may hinder understanding and resolution of the problem. The original poster expresses concern about the clarity of the problem and whether it has been addressed previously.