3 papers
math.CO2024
Notes on a short-cut to the proof of the - Theorem
M. R. Emamy-K., Gustavo A. Meléndez Ríos
This paper presents two shortcuts to a classical proof of the - Theorem, which can be found in B. Davey and H. Priestley [2] and S. Burris and H. Sankap…
math.CO2023
ST-Distributive and ST-Modular Lattices
M. R. Emamy-K., Gustavo A. Melendez Rios
For two subsets S and T of a given lattice L, we define a relative distributive (modular) property over L, that underlies a large family including the usual class of distributive (…
math.CO2018
The edge-vertex inequality in a planar graph and a bipartition for the class of all planar graphs
M. R. Emamy-K., Bahman Kalantari, Tatiana Correa
For a planar graph with a given f-vector we introduce a cubic polynomial whose coefficients depend on the f-vector. The planar graph is said to be real if…