Intereting Posts

Integral solutions of hyperboloid $x^2+y^2-z^2=1$
Understanding a lemma in proof of Valuative Criteria of Separatedness
Taylor series expansion and the radius of convergence
How find all positive $a^3=b^2+2000000$
Is there such a thing as proof by example (not counter example)
Polynomials representing primes
How to prove that the implicit function theorem implies the inverse function theorem?
Integrate: $ \int_0^\infty \frac{\log(x)}{(1+x^2)^2} \, dx $ without using complex analysis methods
Generators of $\mathbb{Z}$ and $\mathbb{Z}$ when $\mathbb{Z}$, $\mathbb{Z}$ are f.g.
Subrings of fraction fields
Union of subgroups is subgroup
Question about equivalent norms on $W^{2,2}(\Omega) \cap W^{1,2}_0(\Omega)$.
Show that the ring of all rational numbers, which when written in simplest form has an odd denominator, is a principal ideal domain.
Finding derivative of $\sqrt{x}$ using only limits
Generating series using partitions

I’m looking for a reference on the theory of straightedge and compass constructions in three dimensions akin to Euclid’s *Elements* in two dimensions. More specifically, I mean a theory of geometric constructions where one is allowed lines between any two points, planes through any three non-colinear points, and spheres with a given center and radius. My preliminary Google searches aren’t giving anything but surely this has been studied.

- Good books on “advanced” probabilities
- Did Zariski really define the Zariski topology on the prime spectrum of a ring?
- Representation of Cyclic Group over Finite Field
- Is something similar to Robin's theorem known for possible exceptions to Lagarias' inequality?
- What is elliptic bootstrapping?
- What is the (mathematical) point of straightedge and compass constructions?
- Berry-Esseen bound for binomial distribution
- What's a good book for a beginner in high school math competitions?
- The derivation of the Weierstrass elliptic function
- Explaining the method of characteristics

- Show that $(2^n-1)^{1/n}$ is irrational
- Is the cardinality of uncountable $G_{\delta}$ set of $\mathbb{R}$ equals the cardinality of the continuum?
- If $x$ and $y$ are not both $0$ then $ x^2 +xy +y^2> 0$
- knowledge needed to understand Fermat's last theorem proof
- Integral points on a circle
- Hartshorne's Exercise II.5.1 – Projection formula
- (Possible) application of Sarason interpolation theorem
- Eigenvalues of a tridiagonal stochastic matrix
- If two norms are equivalent on a dense subspace of a normed space, are they equivalent?
- Why is it possible to conclude everything from a false statement?
- Let $(p_n)_{n \in \mathbb{N}}$ be the sequence of prime numbers, then $\lim_{n \to \infty}\frac{p_{n+1}}{p_n} = 1$?
- Proving that an additive function $f$ is continuous if it is continuous at a single point
- Is there a simple example of a ring that satifies the DCC on two-sided ideals, but doesn't satisfy the ACC on two-sided ideals?
- How to effectively study math?
- Summation of n-squared, cubed, etc.