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math.CO2026
On set-like sunflower-free families of subspaces over finite fields
Kamil Otal
The Erdős--Rado sunflower problem admits two natural analogues in finite vector spaces, corresponding to two different ways of generalising the set-theoretic notion of a sunflower.…
cs.IT2026
Angle Between Two Vectors over Finite Fields and an Application to Projective Unique Decoding
Kamil Otal
We introduce a Hamming-type angular function on pairs of nonzero vectors in and show that it sat…