Possibilities for Shafarevich-Tate Groups of Modular ... - William Stein
Possibilities for Shafarevich-Tate Groups of Modular ... - William Stein
Possibilities for Shafarevich-Tate Groups of Modular ... - William Stein
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Pro<strong>of</strong> (3): Long Exact Sequence<br />
The long exact sequence <strong>of</strong> étale cohomology begins<br />
Take the p-power torsion in this exact sequence then use<br />
Mazur’s theorem. Next analyze the cokernel <strong>of</strong> δ…