CHING-LI CHAI   翟敬立

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Office: 4N36 DRL Penn Math Dept, 209 S. 33rd St., Philadelphia
Email:chai@math.upenn.edu 215-898-8627(dept), 215-898-4080(grad)
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Research General Description Papers and Preprints Book in Progress
Notes Seminars and Colloquia Advanced Courses Expository Articles


Current Courses
Past Courses Dissertations of Former Students Course Notes





Download the pdf file of
David Mumford Selected Papers volume 2, On Algebraic Geometry, Including Correspondence with Alexander Grothendieck
for your personal use.


This book is being distributed by the Mathematics Division of the National Center for Theoretical Sciences (NCTS), Taiwan, under a perpetual non-exclusive license. You can download pdf file of the from from the Download page of the NCTS archive

Copyright statement: The editors wrote to Springer requesting the reversion of the copyright on January 1, 2025, thereby regained the copyright according to the contract with Springer. This document is freely accessible to the mathematical community now.
Springer's license expired on January 1, 2025. However Springer kept selling a softcover edition of this book in 2025 and 2026, a clear act of copyright infringement. This multinational corporation has yet to stop feigning ignorance and faces up to its illegal deed.

Here is a scan of the amended contract with Springer (private information redacted). The last Clause of the amendment, on Termination, states:
This Agreement shall be terminated on January 1, 2025 providing any of the three Editors has submitted a written request for a reversion of the copyright. Licenses in effect at that time shall be completely concluded.



On the works of Stephen Shatz, handout version,   and    On the works of Stephen Shatz, slides



About David Mumford Selected Papers Volume 2, On Algebraic Geometry, Including Correspondence with Alexander Grothendieck



Developments in Algebraic Geometry, a conference on research in algebraic geometry in directions initiated by David Mumford, June 2, 2007, Providence, RI.