"Upper and Lower Bounds for Stochastic Processes" is the topic to which I devoted a large part of my life. If you are interested in it, my advice is that you should go directely to my 2021 book with this title and IGNORE all the previous books, into which I put far less pedagological efforts. This book is a MAJOR remodeling of the 2014 edition, and furthermore presents the solutions of many 30+ years problems. These solutions have not been published elsewhere. You may find a useful part of the book here. And here are some thoughts related to one of my long-standing matching problems which occurred to me too late to be included in the book. There will be no further editions of this book, but if you have any helpful comments please share them with me so that I can help others: Erratum.
Here you can find a convincing endorsement for the firt edition of my book "What is a quantum Field theory?" So imagine the revised edition! It corrects the problems pointed out in the Erratum to the first edition, and incorporates the solution of the exercises, some of which you can also find here: solutions to selected exercises . There will be no further edition. Please DO NOT BE SHY to contact me to help you read this book. There must remain mistakes and obscurities, and you will help everybody correcting them.
In my youth I have published some papers in the Bulletin des Sciences Mathematiques, of which there does not exist an electronic version. You may find several of them here: Papers in Bull. Sci. Math.
It was a long way to get there.
