The IPNet is a free network for researchers working the area of Inverse and/or Ill-Posed Problems. The newsletter 'IPNet Digest' regularly publishes notices and scientific queries of general interest to this community.
IPNet has been generously managed by Patricia Lamm and hosted by Michigan State University for about 30 years. In February 2023 a transition with provisional hosting by the Finnish Inverse Problems Society (fips) and the University of Helsinki is planned.
The goals of the IPNet remain unchanged, and subscriptions will continue to be free.
However, all current users must resubscribe in order to continue to receive the IPNet Digest. To do so, please fill out the form at
Until the transition is complete, submissions to the IPNet Digest can be sent to