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• Formal mapping between infinite branch cuts and finite singularities in improper evaluations

• Computing the intersection of two splitting fields as $\mathbb Q$-vector spaces

• Multivariable Second Derivative Test Intuition

• Other ways to construct this sort of rotation between between 3D vectors $\vec f$ to $\vec t$? Maybe another matrix?

• Intersecting system of finite sets with two properties must be finite?

• Mersenne and Collatz

• Definition of degree map of complex line bundle in Lee's Introduction to Complex Manifolds

• Why is trace embedding $W^{1,2}(M) \hookrightarrow L^p(\partial M)$ compact

• Can this Sum-Notation function be altered to get around the convention that $0^0 = 1$?

• Dominant rational maps necessitate open subsets have dense image

• Binomial like transform

• A finite axiomatization of the theory of the class of finite linear orders

• Prove P, I, O, Q are concyclic given a few midpoints and the circumcenter

• Evaluating $\int_{-1}^{\infty}\frac{dx}{x^4-x^3-3x^2-x+3}$ using residues

• Exercise 3.1.1 from Weibel's AITHA

• The pro-$p$ completion of subgroups of principal congruence subgroups in $SL_n(\mathbb Z)$

• Seeking an integer perimeter for a particular cyclic quadrilateral, given its area and the radius of its circumcircle .

• Mod 10. Olympiad 2026 . Nahuta Viktoriia

• Without use of Lagrange's Th., can it be shown that an element of a finite Abelian group of order 40 cannot have an order of 3?

• This is a little bit of a tongue twisting, for want of a better. $G$ abelian is equivalent to $G/Z(G)$ cyclic.

• Reconstructing Underlying state variable from One Observable Data

• "The object obtained by associating a space of any number of dimensions with an affine connection is called an affine space."?

• Prove non-necessity without logical impasse

• Possible formalisations of an Orwellian problem

• ODE for a general Confluent hypergeometric function

• Integer interval $[p_n,p_{n+1}]$ has a prime factor $y_n$ such that $y_n > p_{n+1} - p_n - 1$?

• Injectivity of $f(x)=\frac{1}{\Gamma(x)\,\eta(x)}\int_{0}^{\infty}\frac{2(\cos(k\ln t))^{2}\,t^{x-1}}{e^{t}+1}\,dt$ on $(0,1)$

• How to show $\int_{0}^{\infty} x^{\sqrt{10}}e^{-x^{\frac{1}{100}}} dx < \infty$?

• how to prove p0/p1 is conditional expectation of dq/dp

• Higher order terms of $\operatorname{grad}$ on a perturbed Morse flowline

• Does the Lusternik-Schnirelmann eigenvalues exhaust the spectrum of the $p$-Laplacian?

• Determinant of $e^Ae^Be^{-A}e^{-B}$

• Choosing 5 of 13 Equally Spaced Points Guarantees an Isosceles Triangle

• Boundedness of convergent sequence.

• How to find $\eta$, $\eta'$ and $\xi$ for a repeated root in a system of linear differential equations?

• A term for a function that depends on its point of evaluation (or other fixed parameters) as well as its argument? E.g. $\Delta f_{x}(\Delta x)$

• How do you calculate the dimensions of a saltire when it must take up 1 nth of the plane area of a rectangle enclosing it?

• Minimum area of a quadrilateral that can be inscribed in a square while respecting the given areas of the four right-angled triangles.

• Is the quadratic deletion bound in the positive-fraction Erdős–Szekeres theorem necessary?

• How to show that $e^{a_1 z} ,...,e^{a_n z}$ is Linearly independent over $\mathbb{C}$

• A question about why a atlas on a differentiable manifold consist of compatible charts

• How to gain an intuition for finding absolute constants

• Finding $\displaystyle \sup_{x \in [1,\infty)} x e^{-tx}$ when $t \ge 0$

• Decoding Arthur Ganson's gear-making tool

• The osculating sphere and spherical curves.

• New multi-grade solutions $x_1^k+x_2^k+x_3^k=y_1^k+y_2^k+y_3^k=z_1^k+z_2^k+z_3^k, k<5$

• How to prove $xy=n^2$?

• How can I generalize the multiplication rule of probability for more than two events?

• Maximum Norm of random vectors

• Which limits and colimits are preserved by the inclusion of locally constant sheaves into all sheaves?

• Doubt in one of the options in question about row equivalence

• Maximizing the distance between consecutive vertices of a cycle graph

• Concatenation of solutions

• On proving that the symmetric algebra is isomorphic to the polynomial ring.

• mapping a terminal object to a coproduct of terminal objects

• Converse to Lovasz Local Lemma?

• Why is a PDE a submanifold (and not just a subset)?

• What is the largest volume of a polyhedron whose skeleton has total length 1? Is it the regular triangular prism?

• Sorting of prime gaps

• Ring structure on the absolute Galois group of a finite field

• Pullback and Pushforward Isomorphism of Sheaves

• Probability for an $n\times n$ matrix to have only real eigenvalues

• On the Constant Rank Theorem and the Frobenius Theorem for differential equations.

• Mondrian Art Problem Upper Bound for defect

• Is there a "ping-pong lemma proof" that $\langle x \mapsto x+1,x \mapsto x^3 \rangle$ is a free group of rank 2?

• If polynomials are almost surjective over a field, is the field algebraically closed?

• If $f(n)$ is the number of groups of order $n$, then is $f(a)\cdot f(b)\leq f(a\cdot b)$?

• Finding primes so that $x^p+y^p=z^p$ is unsolvable in the $p$-adic units

• Does the $32$-inator exist?

• Does every ring of integers sit inside a ring of integers that has a power basis?

• Determinant of a matrix that contains the first $n^2$ primes.

• Complete, Finitely Axiomatizable, Theory with 3 Countable Models

• Classification of local Artin (commutative) rings which are finite over an algebraically closed field

• Can Erdős-Turán $\frac{5}{8}$ theorem be generalised that way?

• A question about divisibility of sum of two consecutive primes

• Is there a bijection of $\mathbb{R}^n$ with itself such that the forward map is connected but the inverse is not?