Software product line engineering is a very common method for designingcomplex software systems. Feature modeling is the most common approach tospecify product lines. The main part of a feature model is a special tree offeatures called a feature diagram. Cardinality-based feature diagrams providethe most expressive tool among the current feature diagram languages. Themost co...

We introduce the concept of parallelism in diagram geometry, we apply it to a new gluing concept that provides geometries of higher rank, we combine it with another recent extension procedure for geometries and collect many examples solving existence questions for geometries over specified diagrams.

A diagram that shows at a glance the social network and support of patients was found useful in a follow-up study of patients with strokes. We believe that the diagram would prove valuable in medical case records and should be an essential part of medical-social reports, particularly for patients at risk of losing their independence.

<span lang="EN-US">The strength of the model-driven architecture (MDA) lies in its use models and diagrams process visualizing developing information systems companies, that is why we chose business model notations (BPMN) due to simplicity symbols clarity so all simple users within organization can understand their needs goals quickly smoothly. In our paper, suggested connect categories s...

In a diagram editor, one can distinguish initial from incremental diagram layout. The former computes a diagram layout from scratch, whereas the latter adjusts an existing layout after diagram modifications. In previous work, we have proposed a pattern-based approach as a solution for incremental diagram layout in visual language editors. Each LP encapsulates certain layout behavior. A diagram’...

For an oriented virtual link, L.H. Kauffman defined the f polynomial (Jones polynomial). The supporting genus of a virtual link diagram is the minimal genus of a surface in which the diagram can be embedded. In this paper we show that the span of the f -polynomial of an alternating virtual link L is determined by the number of crossings of any alternating diagram of L and the supporting genus o...