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pro vyhledávání: '"Tricot, Paul"'
Autor:
Tricot, Paul
The group $PGL(2,q)$ acts $3$-transitively on the projective line $GF(q) \cup \{\infty\}$. Thus, an orbit of its action on the $k$-subsets of the projective line is the block set of a $3$-$(q+1,k,\lambda)$ design. We find the parameters of the design
Externí odkaz:
http://arxiv.org/abs/2408.14714
Autor:
Tricot, Paul
We study perfect $2$-coloring of the Johnson graphs $J(n,3)$ associated with the third largest eigenvalue and symmetric quotient matrix, which exists only when $n \in \{6, 10\}$. We survey the known constructions in the case $n=6$, give a new constru
Externí odkaz:
http://arxiv.org/abs/2403.03474
