A polynomial time algorithm for determining the isomorphism of graphs of fixed genus

summar

Modification of the wettability characteristics of polymethyl methacrylate (PMMA) by means of CO2, Nd:YAG, excimer and high power diode laser radiation

The surface of the bio-material polymethyl methacrylate (PMMA) was treated with CO2, Nd:YAG, excimer and high power diode laser (HPDL) radiation. The laser radiation was found to effect varying degrees of change to the wettability characteristics of the material depending upon the laser used. It was observed that interaction with CO2, Nd:YAG and HPDL effected very little change to wettability characteristics of the PMMA. In contrast, interaction of the PMMA with excimer laser radiation resulted an increase in a marked improvement in the wettability characteristics. After excimer laser treatment the surface O2 content was found to have increased and the material was seen to be more polar in nature. The work has shown that the wettability characteristics of the PMMA could be controlled and/or modified with laser surface treatment. However, a wavelength dependence of the change of the wetting properties could not be deduced from the findings of this work

Quantum algorithms for algebraic problems

Quantum computers can execute algorithms that dramatically outperform classical computation. As the best-known example, Shor discovered an efficient quantum algorithm for factoring integers, whereas factoring appears to be difficult for classical computers. Understanding what other computational problems can be solved significantly faster using quantum algorithms is one of the major challenges in the theory of quantum computation, and such algorithms motivate the formidable task of building a large-scale quantum computer. This article reviews the current state of quantum algorithms, focusing on algorithms with superpolynomial speedup over classical computation, and in particular, on problems with an algebraic flavor.Comment: 52 pages, 3 figures, to appear in Reviews of Modern Physic

1104-14 MATEMATICA Funciones

Material de estudio para alumnos de 1º año, Área Matemática

1105-17 MATEMÁTICA Triángulos, Circunferencias y Congruencia

Material de estudio para alumnos de 1º año - Área Matemática

1103-15 MATEMÁTICA Funciones

Material de estudio para alumnos de 1º año - Área Matemática

1104-16 MATEMÁTICA Relaciones Métricas

Material de estudio para alumnos de 1º año - Área Matemática

1101-15 MATEMATICA Conjuntos-Reales no negativos-Volumen

Material de estudio para alumnos de 1º año, Área Matemátic

1105-19 MATEMÁTICA Triángulos, Circunferencias y Congruencia

Material de estudio para estudiantes de 1º año - Área Matemátic