COPYRIGHT NOTICE: Vladimir G. Berkovich: Integration of One-forms on P-adic Analytic Space is published by Princeton University Press and copyrighted, © 2006, by Princeton University Press. All rights reserved. No part of this book may be reproduced in any form by any electronic or mechanical means (including photocopying, recording, or information storage and retrieval) without permission in writing from the publisher, except for reading and browsing via the World Wide Web. Users are not permitted to mount this file on any network servers. Follow links for Class Use and other Permissions. For more information send email to: permissions@pupress.princeton.edu Contents Introduction 1. Naive Analytic Functions and Formulation of the Main Result 1.1 1.2 1.3 1.4 1.5 1.6 Preliminary remarks and notation The sheaf of naive analytic functions DX -modules and DX -modules Logarithms Logarithmic Poincaré lemma Formulation of the main results 2. Étale Neighborhoods of a Point in a Smooth Analytic Space 2.1 2.2 2.3 2.4 Étale neighborhoods of a point with s(x) = dim(X) The local structure of a smooth analytic curve Étale neighborhoods of a point with s(x) < dim(X) Basic curves 3. Properties of Strictly Poly-stable and Marked Formal Schemes 3.1 3.2 3.3 3.4 3.5 Strictly poly-stable formal schemes Open neighborhoods of the generic point of an irreducible component A property of strata A tubular neighborhood of the diagonal of a stratum closure The same for proper marked formal schemes 4. Properties of the Sheaves 1,cl X /dOX 4.1 4.2 4.3 4.4 4.5 Analytic curve connectedness of closed analytic spaces c 1 v The sheaves OX , OX , and OX 1 Structure of the sheaves X /d OX for smooth analytic curves v Injectivity of the homomorphism dLog : OX ⊗Z cX → 1,cl X /d OX 1,cl A subsheaf X ⊂ X /d OX and a subspace VX,x ⊂ 1,cl X,x /d OX,x 5. Isocrystals 5.1 5.2 5.3 5.4 5.5 Wide germs of analytic spaces and of formal schemes D-modules on smooth strictly k-affinoid germs and isocrystals A construction of isocrystals The filtered isocrystals EB and the shuffle algebras Unipotent isocrystals E i (X, Z) 1 7 7 9 10 14 17 20 23 23 28 32 35 39 39 43 47 48 51 55 55 57 59 63 65 71 71 74 78 81 83 vi CONTENTS 6. F-isocrystals 6.1 6.2 6.3 6.4 6.5 Frobenius liftings A Frobenius structure on the isocrystals E i (X, Z) A uniqueness property of certain F -isocrystals Structure of a commutative filtered DB -algebra on E(X, Z) Filtered F -isocrystals E K (X, Z) and F λ (X, Z) 7. Construction of the Sheaves SXλ 7.1 7.2 7.3 7.4 7.5 7.6 Induction hypotheses Split one-forms Marked and weakly marked one-forms Construction of a primitive of a weakly marked one-form Construction of the DX -modules SXλ,n+1 End of the proof 8. Properties of the sheaves SXλ 8.1 8.2 8.3 8.4 8.5 Filtered D(X,Y ) -algebras E λ (X, Y ) for germs with good reduction Filtered DXη -algebras E λ (X) for proper marked formal schemes λ λ A filtered DOX,x-subalgebra EX,x ⊂ SX,x and the space VX,x More uniqueness properties A filtered DX -subalgebra sX ⊂ SX and the sheaf X 9. Integration and Parallel Transport along a Path 9.1 9.2 9.3 9.4 9.5 Integration of closed one-forms along a path Nontrivial dependence on the homotopy class of a path Locally unipotent and quasi-unipotent DX -modules Parallel transport along a path Parallel transport along an étale path 87 87 88 89 91 92 95 95 98 99 102 105 108 113 114 117 119 124 127 131 131 134 136 139 144 References 149 Index of Notation 153 Index of Terminology 155