Sidney Raffer's user avatar
Sidney Raffer's user avatar
Sidney Raffer's user avatar
Sidney Raffer
  • Member for 13 years, 11 months
  • Last seen more than 2 years ago
36 votes
Accepted

Computing the Galois group of a polynomial

35 votes

Define $\mathbb{N}$ in the ring $\mathbb{Z}$ without Lagrange's theorem

28 votes
Accepted

Are surjectivity and injectivity of polynomial functions from $\mathbb{Q}^n$ to $\mathbb{Q}$ algorithmically decidable?

28 votes

Fiction books about mathematicians?

23 votes
Accepted

How often are irrational numbers well-approximated by rationals?

19 votes

What is the high-concept explanation on why real numbers are useful in number theory?

15 votes

Does there exist a holomorphic function which takes given values on the positive integers?

13 votes

Numbers that are generic w.r.t. exponentiation

13 votes
Accepted

Are the terms of a linear recurrence integral?

12 votes

Importance of Log Convexity of the Gamma Function

11 votes
Accepted

Is equality of formulas with floor rounding or integer division decidable?

11 votes
Accepted

Is equivalence of functions built from nested exponentiations a decidable problem?

11 votes

Why can Diophantine equations represent exponential growth?

11 votes

The existence of non-trivial homomorphisms $\prod_{n=1}^{\infty}\mathbb{Z}/\bigoplus_{n=1}^{\infty}\mathbb{Z}\to\mathbb{Z}/p\mathbb{Z}$

11 votes
Accepted

First order decidability of rings vs Diophantine decidability

8 votes
Accepted

Sets of integers represented by degree zero rational functions

8 votes

What are the most attractive Turing undecidable problems in mathematics?

7 votes

A question about open induction

6 votes

Non-standard models of finite set theory

6 votes
Accepted

Computable rings similar to Z

6 votes

Bounds on squarefree numbers

6 votes

Floors of powers of reals, how much do the first few determine the next?

5 votes
Accepted

Formulas in a Field and in a Field Extension

5 votes

divisible by all standard prime numbers

4 votes

Discrete orderings on $\mathbb{Z}[x,y]$ that violate the universal theory of the integers

4 votes
Accepted

Searching for an inhomogeneous diophantine approximation algorithm

4 votes
Accepted

"Linear algebra" over Z/nZ - reference please!

4 votes

Decision Procedure for Inequalities between Homogeneous Polynomials

4 votes
Accepted

Implication of Polignac's conjecture on prime distribution in models of PA

4 votes

Real number happens to be an integer