Slate of finished and unfinished slate has increased. It has slate in various colors. Deposits of slate exist throughout the Australian continent, with large reserves quarried in the Adelaide Hills (Willunga and Kanmantoo) and the Mid North (Mintaro and Spalding). Because slate was formed in low heat and pressure, compared to a number of other metamorphic rocks, some fossils can be found in slate; sometimes even microscopic remains of delicate organisms can be found in slate. Slate Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional
Polarization of an algebraic form "n" variables u = ("u", "u", ..., "u"). Suppose that "f" is homogeneous of degree "d", which means that Let u, u, ..., u be a collection of indeterminates with u = ("u", "u", ..., "u"), so that there are "dn" variables altogether. The polar form of "f" is a polynomial which is linear separately in each u (i.e., "F" is multilinear), symmetric in the u, and such that The polar form of "f" is given by the following construction In other words, "F" is a constant multiple of the coefficient of λ λ...λ in the expansion of "f"(λu +