The topographic midlands on Venus comprise about 80% of the surface and an understanding of their mode of formation is essential to unraveling the geologic and geodynamic history of the planet. We explore this question by undertaking a comprehensive geological mapping of the Fredegonde Quadrangle (V-57, 50–751S, 60–1201E, 1:5M scale) that represents the transition zone from the midlands to the ...

The Kuiper quadrangle (H06) is located at the equatorial zone of Mercury and encompasses area between 288°E – 360°E 22.5°N 22.5°S. Using NASA MESSENGER data, we compiled a geological map 1:3,000,000 scale. mapping was mainly based on photo-interpretation an MDIS (Mercury Dual Imaging System) monochrome 166 m/pixel basemap. Additional datasets were also considered: stereo-DTM region, mosaics wit...

We apply the Tangent Method of Colomo and Sportiello to predict arctic curves Six Vertex model with reflecting (U-turn) boundary related Twenty suitable domain wall conditions on a quadrangle, both in their Disordered phase.

We extend some of the theory of flocks of a finite quadratic cone to the infinite case and give some examples. One of the results we prove is that a generalized quadrangle is coming from a flock if and only if all derivations of the flock are well defined.

In this paper, we completely determine the point regular automorphism groups of Payne derived quadrangle symplectic W(q), q odd. As a corollary, show that finite act regularly on points generalized can have unbounded nilpotency class.