Now showing items 11-20 of 94
Concrete Universality and the Ends of Revolutionary Politics: A Žižekian Approach to Postcolonial Women’s Writings
(Duke University Press, 2017)
Role of museums and botanical gardens in ecosystem services in developing countries: Case study and outlook
(International Journal of Environmental Studies, 2017)
Unprecedented environmental challenges require new tools. Knowledge based on scientific research is critical for the creation of environmental awareness and education in order to bring about behavioral changes in society ...
“New Arabic Inscriptions from the Bethesda Pool. Excavations in Jerusalem”
Numerous fragmentary Arabic inscriptions were recovered during the course of archaeological excavations and reconstruction work carried out under the aegis of the White Fathers between 1865 and 1967 within the area of the ...
"Veiled for Day”: Social Justice Experiments and Race Pedagogies
HNN- EXTENSIONS OF FINITE INVERSE SEMIGROUPS
(POLITECNICO DI M ILANO D EPARTMENT OF M ATHEMATICS, 2014)
The concept of HNN-extensions of groups was introduced by Higman, Neumann and Neumann in 1949. HNN-extensions and amalgamated free products have played a crucial role in combinatorial group theory, especially for algorithmic ...
The Gates of the City of Jerusalem in the Fatimid and Saljuq Periods (969-1099 AD)
(The University of Jordan, The Deanship of Academic Research and Quality Assurance, 2017-05-03)
This study discusses the gates of the city of Jerusalem during the Fāṭimid and Saljūq periods through the study of historical sources, contemporary research on this subject and the results of archaeological excavations ...
CONTEXT-FREENESS OF THE LANGUAGES OF SCH UTZENBERGER AUTOMATA OF HNN-EXTENSIONS OF FINITE INVERSE SEMIGROUPS
(PUBLICATIONS DE L'INSTITUT MATHEMATIQUE, 2016)
We prove that the Schutzenberger graph of any element of the HNN-extension of a fnite inverse semigroup S with respect to its standard presentation is a context-free graph, showing that the language L recognized by this ...
Undecidability of the word problem for Yamamura’s HNN-extension under nice conditions
(Semigroup Forum, 2016-04)
The solvability of the word problem for Yamamura’s HNN-extensions [S; A1, A2; ϕ] has been proved in some particular cases. However, we show that, contrary to the group case, the word problem for [S; A1A2; ϕ] is undecidable ...