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A few easy observations: the letters assigned to the ends of each semicircle, upper or lower, are the same; the signatures are opposite; below any upper circle there are no
Without loss of generality we assume that the upper and lower path of the polyomino start in (0 , 0). Figure 1 depicts a parallelogram polyomino having area 14 and semi-perimeter
The proof of Lemma 9 is based on the well-known Besicovitch theorem on possible values of upper and lower derivative numbers (see [1], Ch.IV,.. § 3) and is carried out analogously
On the other hand, in [6] it was proved by Brown that if X is a semilo- cally simply connected topological space, i.e., each component has a simply connected covering, then the
Using Schaefer’s fixed point theorem combined with the selection theorem of Bres- san and Colombo for lower semi-continuous maps with decomposable values, we will next present
Existence result of local solution for differential inclusion with upper semi-conti- nuous and cyclically monotone right hand-side whose values in finite-dimensional space, was
In this paper we extend this result to any continuous weak metric defined on the positive cone in a totally ordered vector space, which is convex in each of the arguments.. Key
Keywords: Fuzzy supra Compact, Fuzzy supra topological space, Lower semi continuous functions, 𝛼-supra compact.. INTRODUCTION In 1965 American mathematician Lotfi
