28 citations · 68 across the 11 of their papers we have counts for
13 papers
Smooth and F--smooth systems
Josef Janyška, Marco Modugno
We review the geometric theory of \emp{smooth systems of smooth maps}, of \emp{smooth systems of smooth sections} of a smooth double fibred manifold and of \emp{smooth systems of s…
Remarks on natural differential operators with tensor fields
Josef Janyška
We study natural differential operators transforming two tensor fields into a tensor field. First, it is proved that all bilinear operators are of order one, and then we give the f…
Remarks on Local Lie algebras of pairs of functions
Josef Janyška
We study local Lie algebras of pairs of functions which generate infinitesimal symmetries of almost-cosymplectic-contact structures of odd dimensional manifolds.
On Lie algebras of generators of infinitesimal symmetries of almost-cosymplectic-contact structures
Josef Janyška
We study Lie algebras of generators of infinitesimal symmetries of almost-cosymplectic-contact structures of odd dimensional manifolds. The almost-cosymplectic-contact structure ad…
Generalized geometrical structures of odd dimensional manifolds
Josef Janyška, Marco Modugno
We define an almost--cosymplectic--contact structure which generalizes cosymplectic and contact structures of an odd dimensional manifold. Analogously, we define an almost--coPoiss…
Semi--vector spaces and units of measurement
Josef Janyška, Marco Modugno, Raffaele Vitolo
This paper is aimed at introducing an algebraic model for physical scales and units of measurement. This goal is achieved by means of the concept of ``positive space'' and its rati…