# Tagged Questions

for questions on algebraic geometry, including algebraic varieties, stacks, sheaves, schemes, moduli spaces, complex geometry, quantum cohomology.

**1**

**0**answers

### Noether-Lefschetz for Kummer-quartic surfaces with curves of bounded degree

**2**

**1**answer

### Ideal of the union of two zero loci

**1**

**0**answers

### Algebraic equivalence of cycles and Chow varieties

**0**

**0**answers

### How many points are still contained in a common (hyper-)ellipsoid?

**4**

**0**answers

### Twistor projective line

**1**

**0**answers

### Direct limit of complexes from cocycle property up to homotopy

**7**

**0**answers

### Can elements in the orthogonal group of a non-split Azumaya algebra with an orthogonal involution have reduced norm -1?

**3**

**3**answers

### Extending a continuous map over projective space

**1**

**0**answers

### Degeneration of relative Hodge-de Rham spectral sequence

**2**

**0**answers

### Ranks of cycles with base field coefficients as a generalization of ranks of multivectors?

**3**

**0**answers

### Confusion in known result about Moduli space of vector bundle of rank 2 degree 0 vector bundles over smooth curve of genus 2

**8**

**2**answers

### The Stacks project

**3**

**0**answers

### Reference Request: Fourier Mukai on non Weierstrass Elliptic Fibration

**7**

**1**answer

### What are some open problems in moduli spaces and moduli stacks?

**5**

**2**answers

### A paradox on the deformation of singularities

**4**

**1**answer

### A question on the slice filtration and the slice of the motive of the projective space

**1**

**1**answer

### Subschemes of projective varieties

**10**

**1**answer

### Books with exercises to learn Langlands program, Galois representations, modular forms

**8**

**0**answers

### On a paper of Formanek about $PGL_4$

**1**

**0**answers

### When does the Jacobian of a smooth curve contains an unique principal polarization

**2**

**2**answers

### Intuition behind Kawamata's definition of a relative movable Cartier divisor

**2**

**1**answer

### Function is $L^p$-integrable for $p >1$ [Kähler Geometry]

**7**

**2**answers

### Understand the difference between two stacks

**2**

**1**answer

### Naive question on the Jacobian of a curve

**1**

**0**answers

### Fiber product of an elliptic surface

**7**

**1**answer

### Do arithmetic schemes have non-singular alterations?

**1**

**1**answer

### Lifting Lang-Steinberg to DVR's in Characteristic 0

**2**

**0**answers

### Hodge conjecture and K-theory

**2**

**0**answers

### Blowing up the base of an elliptically fibered (non Weierstrass) threefold

**6**

**0**answers

### Can the base of an elliptically fibered Calabi-Yau threefold be an Enriques surface?

**5**

**0**answers

### Good reduction of abelian varieties over valuation rings via coverings

**8**

**2**answers

### Berkovich space including both archimedean and non-archimedean worlds

**9**

**2**answers

### Do abelian varieties have Neron models over arbitrary valuation rings?

**10**

**0**answers

### Curves on rational surfaces and Lang's conjecture for M_g

**3**

**0**answers

### Is there Thom isomorphism for equivariant K groups in algebraic geometry, not necessarily complex number field?

**0**

**0**answers

### About the multiplicative group of p-adic complex

**0**

**0**answers

### Computing algebraic entropy

**3**

**0**answers

### Work of Caucher Birkar

**5**

**0**answers

### Algebraic independence of limit cycles of Lienard equation

**3**

**0**answers

### Cohomology of the Hilbert square of a degree 14 K3 surface [Beauville-Donagi]

**5**

**1**answer

### Degeneration of smooth curves and Picard-Lefschetz formula

**7**

**0**answers

### Explicit descriptions of a flop

**5**

**3**answers

### Smoothen a nodal curve

**26**

**2**answers

### How to visualize Dirichlet’s unit theorem?

**7**

**3**answers

### Infinite Galois descent for finitely generated commutative algebras over a field

**0**

**2**answers

### How to find the normal form of an elliptic curve?

**0**

**1**answer

### How to classify a plane complex curve?

**1**

**0**answers

### Branch multipicity of curves

**0**

**0**answers

### critical points relevant to the lowest order non-perturbative correction

**2**

**0**answers