I used to have a set theory textbook downloaded free from the internet. I lost my laptop in the airport of a city in Eastern Europe, and it was not found (or perhaps “not found”) by the airport security. I now try to rediscover the file. I remember the author was a female mathematician from Berkeley. From an internet search I believe that it might have been Julia Robinson, but I still can’t find the book.
It had a fair number of exercises and I believe it covered Gödel’s incompleteness theorem. I would be grateful for help to find the book.