AnabolicHorse
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2 answers
5 votes
99 views
1 bookmarks
Why is the map $\mathrm{SL}_2(\mathbb{R})/\mathrm{SO}(2) \rightarrow \mathbb{H} : A \mapsto Ai$ injective?
1 answers
5 votes
194 views
applying Chinese Remainder Theorem
1 answers
4 votes
525 views
Norm of ideals in the ring of integers
2 answers
3 votes
107 views
Definition of modular forms
1 answers
2 votes
31 views
Why are the coefficients zero if $n$ contains a prime with prime power $1$ that is not split in $K$?
1 answers
2 votes
83 views
Is each prime ideal in a quadratic field of norm $p$ or $p^2$?
0 answers
2 votes
46 views
How to split this sum into a double sum.
0 answers
2 votes
83 views
class number of $\mathbb{Q}(\sqrt{17})$
1 answers
2 votes
159 views
1 bookmarks
splitting primes
1 answers
2 votes
75 views
understanding the definition of Q lies over p
2 answers
2 votes
540 views
How to split the polynomial .
2 answers
2 votes
1k views
Calculating the discriminant
2 answers
2 votes
52 views
Why does the congruence hold?
0 answers
1 votes
69 views
Show that the action of $PSL_2(\mathbb{R})$ on $\mathbb{H}$ is transitive
0 answers
1 votes
114 views
Is there a dimension formula for modular forms of weight $1$ for any congruence subgroup?
1 answers
1 votes
119 views
There are infinitely many primes $p \equiv1(q)$
1 answers
1 votes
37 views
1 bookmarks
Definition of Fourier transform
1 answers
1 votes
55 views
how to find the dual basis
1 answers
1 votes
45 views
How to prove this inequality with sum
0 answers
1 votes
42 views
Why do (1),(2) and (3) hold?
2 answers
1 votes
49 views
showing an identity about the dirichlet series
0 answers
1 votes
77 views
1 bookmarks
Definition of congruence modulo ideal
0 answers
1 votes
44 views
theta transformation
0 answers
1 votes
41 views
1 bookmarks
Fourier transformation of f(x)
0 answers
1 votes
69 views
dual lattice of an ideal in a quadratic number field
2 answers
1 votes
57 views
Showing that $x=\sum_{k=1}^{\infty}1/n_k$
0 answers
1 votes
62 views
modular forms on lattices
1 answers
1 votes
40 views
1 bookmarks
How to prove the inequality by induction
1 answers
1 votes
48 views
calculating the determinant of a matrix A whose entries are $\tau(n)$
0 answers
1 votes
47 views
Understanding the solution