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So these are like those problems that are “left for the reader”?

• Jaxan 9mo ago
  Not necessarily. Even the statements may not appear in the final paper. The questions arose during research, and understanding them was needed for the authors to progress, but maybe not needed for the goal in mind.
• jasonfarnon 9mo ago
  No, results in a paper are identified to be "left for the reader" because they are thought to be straightforward to the paper's audience. These are chosen because they are novel. I didn't see any reason to think they are easier than the main results, just maybe not of as much interest.