Introduction List of notations 1. Background 2. p-adic L-functions and Zeta-elements 3. Cyclotomic deformations of modular symbols 4. A user's guide to Hida theory 5. Crystalline weight deformations 6. Super Zeta-elements 7. Vertical and half-twisted arithmetic 8. Diamond-Euler characteristics: the local case 9. Diamond-Euler characteristics: the global case 10. Two-variable Iwasawa theory of elliptic curves A. The primitivity of Zeta elements B. Specialising the universal path vector C. The weight-variable control theorem Bibliography.
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