Perfect graphs form a well-known class of graphs introduced by Berge in the 1960s in terms of a min-max type equality involving two famous graph parameters. In this work, we survey certain variants and subclasses of perfect ...

© 2019 Elsevier B.V.Perfect graphs form a well-known class of graphs introduced by Berge in the 1960s in terms of a min–max type equality involving two famous graph parameters. In this work, we survey certain variants and ...

An exam of the occurrences of the PRESENT PERFECT in Englishwas made in such a way as to establish the prevailing semantic features ofthis verbal form. I t was verified up to what an extent the meaning of thePERFECTIVE ...

Perfect graphs form a well-known class of graphs introduced by Berge in the 1960s in terms of a min–max type equality involving two famous graph parameters. In this work, we survey certain variants and subclasses of perfect ...

El alumno será capaz de reportar información, parafrasear opiniones, historias u órdenes con palabras propias. The student will be able to inform information, paraphrase opinions, stories or orders with their own words.

The present perfect (pretérito perfecto compuesto in Spanish) is the most widely used verb tense in the Spanish language. Its uses vary greatly throughout the Iberian Peninsula and the Hispanic regions of Latin America. ...

This paper presents some contributions of argumentative semantics to the study of the functioning of the perfecto simple (PPS) and compuesto (PPC) in Spanish. With this purpose, we discuss how this discipline conceives the ...