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7 votes
0 answers
301 views

Arrangement of subspaces over finite fields

I'm trying to find out what is already known about the following setup. Let $V$ be an $n$-dimensional vector space over a finite field $F_q$ (I'm mostly interested in the case where $q$ is prime), and ...
user38495's user avatar
  • 1,062
5 votes
0 answers
235 views

A question on hyperplanes in partial linear spaces and hypergraphs

A partial linear space (or a linear hypergraph) is a point line geometry $(P,L,I)$ where for every pair of points there is at most one line incident with both of them. A hyperplane in a partial linear ...
Anurag's user avatar
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4 votes
0 answers
192 views

Forcing scalar products to avoid prescribed values

Let $p$ be a prime, and $n\ge 1$ an integer number. Suppose that the (not necessarily distinct) vectors $v_1,\dotsc,v_N \in{\mathbb F}_p^n$ satisfy the following condition: \begin{gather} \text{For ...
Seva's user avatar
  • 23k
3 votes
0 answers
195 views

Vector spaces over a field of prime order with certain hyperplanes

Let $V$ be a vector space of finite dimentional $d$ over a field of prime order $p$. For what values of $d$ and $p$, one can find $d+1$ (pairwise distinct) hyperplanes (subspaces of dimension $d-1$) $...
Alireza Abdollahi's user avatar
2 votes
0 answers
86 views

A system of homogeneous linear equations

This is the "real-life" (but slightly more technical) version of a question I have asked recently. For a prime $p>10$, let $\mathcal L_X$, $\mathcal L_Y$, and $\mathcal L_Z$ denote the pencils of ...
Seva's user avatar
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