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This tag is used if a reference is needed in a paper or textbook on a specific result.

1 vote
0 answers
81 views

Reference request: Structure of $H^1({{\mathbf{Q}}_{q}},{{{{E}}_{{p}^{\infty}}}})$

I need reference on the structure of ${H}^{1}({{\mathbf{Q}}_{q}},{{E}_{{{p}^{\infty}}}})$, in particular when: (1.) $q=p$ and/or (2.) $E$ has multiplicative reduction at $q$. Here, $E$ is an ellip …
The Thin Whistler's user avatar
6 votes
1 answer
496 views

Good references for K-theory of modular curves?

The title says it. I am looking for a good exposition on the K-theory of the curves $X_{i}(N)$, $Y_{i}(N)$, where $i\in\{0,1\}$. I have some background in $K$-theory and also some background in modula …
The Thin Whistler's user avatar
0 votes
0 answers
376 views

Conditions for splitting of short exact sequence?

Assume $K$ is a number field and $E$ is an elliptic curve defined over $K$. Are there conditions under which the short exact sequence $$0\rightarrow E (K)/mE (K)\rightarrow H^1_{Sel}(K,E_m)\rightarro …
The Thin Whistler's user avatar
2 votes
0 answers
237 views

Reference request: Cohomology of Elliptic Curves

Is it true that the group $$H^1(Gal(K^{ab}/K)/\mu_{\nu}(Gal(K_{\nu}^{ab}/K_{\nu})),E_{p^n})$$ is always p-divisible? Or are there any conditions which, when satisfied, guarantee its p-divisibility? He …
The Thin Whistler's user avatar
5 votes
1 answer
450 views

Attribution of theorem saying that inducing isomorphism on homology implies homotopy equival...

Who was the first to prove this theorem and is there an "official" name for it? Let $\phi:X\rightarrow Y$ be a map of H-spaces that are also CW-complexes. Assume $\phi$ induces isomorphisms on homol …
The Thin Whistler's user avatar
2 votes
2 answers
570 views

Good reference on the algebraic geometry of non-associative rings

I am looking for a good reference about the algebraic geometry of non-associative rings. I am in particular interested in derivation algebras. Preferrably an online resource or a book that is availabl …
The Thin Whistler's user avatar
1 vote
0 answers
134 views

Grothendieck trace formula for schemes with étale fundamental groups that have no dense cycl...

This question may be more of a philosophical rather than mathematical nature. Assume I have a scheme $X$ and an endomorphism $F:X\longrightarrow X$. For instance, $X$ might be of finite type over $\ma …
The Thin Whistler's user avatar
8 votes
0 answers
149 views

Looking for an elliptic curve E st ${\large Ш}(\mathbb Q,E)$ cont. an element of order $p^2$...

I am looking for an elliptic curve $E$ with Weierstraß coefficients in $\mathbb{Q} $ so that for some prime $p$ the following conditions are satisfied: (1) ${\large Ш}_{p^{\infty}}(\mathbb{Q},E)$ con …
The Thin Whistler's user avatar
1 vote
1 answer
747 views

Why is every l-adic Galois representation conjugate to one over the l-adic integers? [closed]

Why is every l-adic Galois representation $$G_{\mathbb{Q}_p}\rightarrow GL_n(\mathbb{Q}_{l})$$ conjugate to one over the l-adic integers? $$G_{\mathbb{Q}_p}\rightarrow GL_n(\mathbb{Z}_{l})$$
The Thin Whistler's user avatar
4 votes
0 answers
245 views

Height pairings of Heegner points of nontrivial conductor

I am studying Gross's and Zagier's proof of the BSD conjecture for elliptic curves of rank $\leq 1.$ Their calculation essentially boils down to the following ingredients: (1.) Finding a suitable imag …
The Thin Whistler's user avatar
5 votes
2 answers
626 views

Reference request: Kleiman's proof of Snapper's Lemma

On page 4 of Nitin Nitsure's paper Construction of Hilbert and Quot Schemes, the author refers to the fact that Hilbert polynomials are indeed polynomials as a special case of Snapper's Lemma, see "A …
The Thin Whistler's user avatar