Erkko Lehtonen

collaborators

3 papers

math.CO2025

Clonoids of Boolean functions with a linear source clone and a semilattice or 0- or 1-separating target clone

Erkko Lehtonen

Extending Sparks's theorem, we determine the cardinality of the lattice of $(C_{1}, C_{2})$ -clonoids of Boolean functions for certain pairs $(C_{1}, C_{2})$ of clones of Boolean functions. N…

math.CO2024

Clonoids of Boolean functions with essentially unary, linear, semilattice, or 0- or 1-separating source and target clones

Erkko Lehtonen

Extending Sparks's theorem, we determine the cardinality of the lattice of $(C_{1}, C_{2})$ -clonoids of Boolean functions for certain pairs $(C_{1}, C_{2})$ of clones of essentially unary, l…

math.CO2024

Clonoids of Boolean functions with a monotone or discriminator source clone

Erkko Lehtonen

Extending Sparks's theorem, we determine the cardinality of the lattice of $(C_{1}, C_{2})$ -clonoids of Boolean functions in the cases where the target clone $C_{2}$ is the clone of proje…