TOPOLOGICAL STRINGS, STRIPS AND QUIVERS

Topological strings, strips and quivers

Abstract We find a direct relation between quiver representation theory and open topological string theory on a class of toric Calabi-Yau manifolds without compact four-cycles, also referred to as strip geometries.We show that various quantities that characterize open topological string theory on these manifolds, such as partition functions, Gromov

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Electric Field Distribution and Switching Impulse Discharge under Shield Ball Surface Scratch Defect in an UHVDC Hall

The dimension and surface state of shielding fittings in ultra high voltage direct current (UHVDC) converter station valve halls have a great influence on their surface electric field and switching impulse characteristics, which are important parameters confirming the air gap distance in the valve hall.The characteristics of impulse discharge under

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Digestibility of Insect Meals for Nile Tilapia Fingerlings

Insects are a valuable source of nutrients for fish, but little is known about their nutritional value for Nile tilapia fingerlings.To evaluate the nutritional value and energy apparent digestibility coefficient (ADC) of five insects for Nile Tilapia male fingerlings, 900 fish were distributed in 18 fiberglass conic tanks, in a Stepdown Transformer

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