Let $d$ be a positive integer which is not a perfect square. Let $K = \mathbb{Q}(\sqrt{d})$, and let $I$ be a principal ideal in the ring of integers $\mathcal{O}_K$ of $K$. My question is, suppose that I know that $N(I)$ is bounded by some positive number $X$, and I know the regulator $\log \epsilon_d = \log(u_0 + v_0 \sqrt{d})$, where $(u_0, v_0)$ is the smallest positive solution to the equation $x^2 - dy^2 = \pm 4$. Can I bound the size of a generator of $I$, say $u+v\sqrt{d}$? More specifically, is it true that there exists a generatoe $g = u + v\sqrt{d} \in \mathcal{O}_K$ such that $\max\{|u|,|v|\} = O(X \log \epsilon_d)$?
2026-03-29 05:12:15.1774761135
Bound on the size of a generator of a principal ideal in a real quadratic field of bounded norm
133 Views Asked by Bumbble Comm https://math.techqa.club/user/bumbble-comm/detail AtRelated Questions in NUMBER-THEORY
- Maximum number of guaranteed coins to get in a "30 coins in 3 boxes" puzzle
- Interesting number theoretical game
- Show that $(x,y,z)$ is a primitive Pythagorean triple then either $x$ or $y$ is divisible by $3$.
- About polynomial value being perfect power.
- Name of Theorem for Coloring of $\{1, \dots, n\}$
- Reciprocal-totient function, in term of the totient function?
- What is the smallest integer $N>2$, such that $x^5+y^5 = N$ has a rational solution?
- Integer from base 10 to base 2
- How do I show that any natural number of this expression is a natural linear combination?
- Counting the number of solutions of the congruence $x^k\equiv h$ (mod q)
Related Questions in ALGEBRAIC-NUMBER-THEORY
- Splitting of a prime in a number field
- algebraic integers of $x^4 -10x^2 +1$
- Writing fractions in number fields with coprime numerator and denominator
- Tensor product commutes with infinite products
- Introduction to jacobi modular forms
- Inclusions in tensor products
- Find the degree of the algebraic numbers
- Exercise 15.10 in Cox's Book (first part)
- Direct product and absolut norm
- Splitting of primes in a Galois extension
Related Questions in QUADRATIC-FORMS
- Can we find $n$ Pythagorean triples with a common leg for any $n$?
- Questions on positivity of quadratic form with orthogonal constraints
- How does positive (semi)definiteness help with showing convexity of quadratic forms?
- Equivalence of integral primitive indefinite binary quadratic forms
- Signs of eigenvalues of $3$ by $3$ matrix
- Homogeneous quadratic in $n$ variables has nonzero singular point iff associated symmetric matrix has zero determinant.
- Trace form and totally real number fields
- Let $f(x) = x^\top Q \, x$, where $Q \in \mathbb R^{n×n}$ is NOT symmetric. Show that the Hessian is $H_f (x) = Q + Q^\top$
- Graph of curve defined by $3x^2+3y^2-2xy-2=0$
- Question on quadratic forms of dimension 3
Related Questions in PELL-TYPE-EQUATIONS
- how to geometrically explain why pell numbers close to sqrt 2
- Solutions for $65x^2-57y^2=8 \cdot 61$
- Show that $x^2-dy^2 = -2$ with $d = m^2+2$ has infinitetly many integer solutions
- Fundamental solution to specific Pell equation
- Existence of Solution to Generalized Pell's Equation
- A question about principality of ideals dividing $(p)$ in imaginary quadratic field
- How to show that $x^2 - 37y^2 =2$ does not have integer solutions
- When is there a solution to the generalized Pell's equation?
- algebra direct connect pell eqn soln $(p_{nk},q_{nk})$ with $(p_n + q_n\sqrt{D})^k$
- Fundamental Solution of Pell's Equation
Trending Questions
- Induction on the number of equations
- How to convince a math teacher of this simple and obvious fact?
- Find $E[XY|Y+Z=1 ]$
- Refuting the Anti-Cantor Cranks
- What are imaginary numbers?
- Determine the adjoint of $\tilde Q(x)$ for $\tilde Q(x)u:=(Qu)(x)$ where $Q:U→L^2(Ω,ℝ^d$ is a Hilbert-Schmidt operator and $U$ is a Hilbert space
- Why does this innovative method of subtraction from a third grader always work?
- How do we know that the number $1$ is not equal to the number $-1$?
- What are the Implications of having VΩ as a model for a theory?
- Defining a Galois Field based on primitive element versus polynomial?
- Can't find the relationship between two columns of numbers. Please Help
- Is computer science a branch of mathematics?
- Is there a bijection of $\mathbb{R}^n$ with itself such that the forward map is connected but the inverse is not?
- Identification of a quadrilateral as a trapezoid, rectangle, or square
- Generator of inertia group in function field extension
Popular # Hahtags
second-order-logic
numerical-methods
puzzle
logic
probability
number-theory
winding-number
real-analysis
integration
calculus
complex-analysis
sequences-and-series
proof-writing
set-theory
functions
homotopy-theory
elementary-number-theory
ordinary-differential-equations
circles
derivatives
game-theory
definite-integrals
elementary-set-theory
limits
multivariable-calculus
geometry
algebraic-number-theory
proof-verification
partial-derivative
algebra-precalculus
Popular Questions
- What is the integral of 1/x?
- How many squares actually ARE in this picture? Is this a trick question with no right answer?
- Is a matrix multiplied with its transpose something special?
- What is the difference between independent and mutually exclusive events?
- Visually stunning math concepts which are easy to explain
- taylor series of $\ln(1+x)$?
- How to tell if a set of vectors spans a space?
- Calculus question taking derivative to find horizontal tangent line
- How to determine if a function is one-to-one?
- Determine if vectors are linearly independent
- What does it mean to have a determinant equal to zero?
- Is this Batman equation for real?
- How to find perpendicular vector to another vector?
- How to find mean and median from histogram
- How many sides does a circle have?