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(tex) more bestiary ideas for ch5
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kbuzzard committed Apr 4, 2024
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3 changes: 2 additions & 1 deletion blueprint/src/chapter/ch04overview.tex
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Expand Up @@ -50,7 +50,8 @@ \section{Compatible families, and reduction at 3}
We now use Khare--Wintenberger to lift $\rho$ to a potentially modular $\ell$-adic
Galois representation of conductor 2, and put it into an $\ell$-adic famiily using
the Brauer's theorem trick in \cite{blggt}. Finally we look at the 3-adic specialisation
of this family. Reducing mod 3 we get a representation which must be reducible because
of this family. Reducing mod 3 we get a representation which is flat at 3 and tame at 2,
so must be reducible because
of the techniques introduced in Fontaine's paper on abelian varieties over $\Z$ (an irreducible
representation would cut out a number field whose discriminant violates the Odlyzko bounds).
One can now go on to deduce that the 3-adic representation must be reducible, which
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13 changes: 12 additions & 1 deletion blueprint/src/chapter/ch05bestiary.tex
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Expand Up @@ -10,6 +10,10 @@ \chapter{A collection of results which are needed in the proof.}

mult 1,

cyclic base change

automorphic induction from GL_1(quad extn) to GL_2

Galois rep associated to an auto rep,

Definition of an automorphic representation for the units of a quaternion algebra over a totally real field (including situations where the algebra is split at one or two infinite places).
Expand All @@ -20,4 +24,11 @@ \chapter{A collection of results which are needed in the proof.}

Moret-Bailly

mor to come
Artin symbol of local class field theory

Existence of solvable extension avoiding a global extension and with prescribed local behaviour

Poitou-Tate

local Tate duality

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