On the Regularity of Operators Near a Regular Operator

Shibo Liu. On the Regularity of Operators Near a Regular Operator. The American Mathematical Monthly, 117(10):927-928, 2010. [doi]

@article{Liu10-92,
  title = {On the Regularity of Operators Near a Regular Operator},
  author = {Shibo Liu},
  year = {2010},
  url = {http://www.jstor.org/stable/10.4169/000298910X523425},
  researchr = {https://researchr.org/publication/Liu10-92},
  cites = {0},
  citedby = {0},
  journal = {The American Mathematical Monthly},
  volume = {117},
  number = {10},
  pages = {927-928},
}