All questions asked by zigmod

List all solved & unsolved questions asked by zigmod

Save multiple raster files as shapefiles

1 Geographic Information Systems Asked on 09/03/2021

export r raster shapefile

Which integer combinations of $n$-th roots of unity are zero?

1 Mathematics Asked on 11/20/2021

complex numbers cyclotomic polynomials elementary number theory polynomials roots of unity

A problem of matrix on the equation $x_1+x_2+cdots+x_n=d$

0 Mathematics Asked on 11/20/2021

algebra precalculus matrix calculus number theory

How to compare Dehn Invariants

0 Mathematics Asked on 11/20/2021

geometry polyhedra tensor products

Can you find a single solution of this function?

1 Mathematics Asked on 11/20/2021

calculus hypergeometric function summation

Definition of vertex in graph theory

1 Mathematics Asked on 11/20/2021

Gluing Construction of the Grassmanian in Eisenbud/Harris

0 Mathematics Asked on 11/19/2021

algebraic geometry grassmannian linear algebra

general matrix determinant lemma

1 Mathematics Asked on 11/19/2021

determinant matrices

Pretty conjecture $x^{left(frac{y}{x}right)^n}+y^{left(frac{x}{y}right)^n}leq 1$

2 Mathematics Asked on 11/19/2021

conjectures derivatives examples counterexamples exponentiation inequality

What fragment of ZFC do we need to prove Zorn's lemma?

3 Mathematics Asked on 11/19/2021

axiom of choice set theory topos theory

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